Use the show commands
in this section to monitor BGP activity.
Note:
The E120 router and E320 router output for monitor and show commands is identical to output
from other E-series routers, except that the E120 and E320 router
output also includes information about the adapter identifier in the
interface specifier (slot/adapter/port).
Use the baseline ip bgp command to set the baseline on all BGP statistics.
You can use the output filtering feature of the show command to include or exclude lines of output
based on a text string you specify. See JUNOSe System Basics Configuration Guide,
for details.
Use the debug ip bgp command to get information
about problems with BGP or the network.
baseline ip bgp
Use to set the baseline on all BGP statistics as the current
values.
For example, if you issue the baseline ip
bgp command, all the current values of BGP statistics
become the baseline values. If the current value of the Total message sent parameter is
105, and the value goes up to 120 messages, the new value is displayed
as 15.
Use to specify fields that are displayed by default by
a subsequently issued show ip bgp summary command.
Use the intro keyword to enable
the display of introductory information about BGP attributes.
The order in which you specify the fields has no effect
on the order in which they are displayed.
Example
host1:pe2(config-router)#default-fields peer remote-as state messages-received messages-sent up-down-time
host1:pe2#show ip bgp summary
Messages Messages
Neighbor AS State Up/down time Sent Received
1.1.1.1 100 Established 00:07:55 94 92
Use the no version to remove
fields from the output of subsequently issued show ip
bgp summary commands.
Use to specify fields that are displayed by default by
any subsequently issued show ip bgp command
that displays BGP routes.
Use the intro keyword to enable
the display of introductory information about BGP attributes.
This command does not affect the output of the show ip bgp summary command.
The order in which you specify the fields has no effect
on the order in which they are displayed.
Example
host1:pe2(config-router)#default-fields route intro next-hop med loc-pref weight as-path
host1:pe2#show ip bgp vpnv4 all
Local BGP identifier 2.2.2.2, local AS 100
6 routes (388 bytes)
7 destinations (560 bytes) of which 0 have a route
0 routes selected for route table installation
6 path attribute entries (936 bytes)
Local-RIB version 74. FIB version 74.
host1#show ip as-path-access-list
AS Path Access List 10:
permit [200-220]
permit ^114
permit ^117.*225$
AS Path Access List 11:
deny .*
AS Path Access List 20:
deny [1100-1250]
permit .*
If you specify an IP address, displays the route that
best matches the specified IP address.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
Field descriptions
Learned from peer—Peer from which route was learned
Next hop IP address—IP address of the next router
that is used when a packet is forwarded to the destination network
AS path—AS path through which this route has been
advertised
Aggregator AS number—AS number of the AS that aggregated
this route
Aggregate IP address—IP address of the router that
aggregated this route
Origin—Origin of the route
MED—Multiexit discriminator for the route
LocPrf—Local preference for the route
Weight—Weight of the route
Communities—Community number associated with the
route
Originator ID—Router ID of the router in the local
AS that originated the route
Cluster ID list—List of cluster IDs through which
the route has been advertised
Stale—Route has gone stale due to peer restart
Example 1—Displays information about routes in the
IPv6 multicast address family
host1# show bgp ipv6 multicast
Local BGP identifier 10.13.13.13, local AS 400
4 routes (160 bytes)
4 destinations (288 bytes) of which 4 have a route
4 routes selected for route table installation
3 path attribute entries (456 bytes)
Local-RIB version 31. FIB version 31.
Status codes: > best, * invalid, s suppressed, d dampened, r rejected,
a auto-summarized
Prefix Peer Next-hop MED LocPrf Weight Origin
::103.103.103.0/120 103.103.103.3 ::103.103.103.3 0 0 inc.
> 3ffe:0:0:1::/64 11.11.11.11 ::101.101.101.1 0 100 0 inc.
> 3ffe:0:0:3::/64 103.103.103.3 ::103.103.103.3 0 0 inc.
> 3ffe:0:1:1::/64 12.12.12.12 ::102.102.102.2 0 100 0 inc.
Example 2—Displays route information for prefix
10.88.88.1/32
host1:pe1#show ip bgp 10.88.88.1
BGP route information for prefix 10.88.88.1/32
Network route (best route
Advertised to both internal and external peers
Address Family Identifier (AFI) is ip-v4
Subsequent Address Family Identifier (SAFI) is unicast
Next hop IP address is 0.0.0.0 (metric 2)
Multi-exit discriminator is 1
Local preference is not present
Weight is 32768
Origin is IGP
AS path is empty
Extended communities empty
Example 3—Displays information about IPv6 prefix
2001:0430::1/128
host1#show bgp ipv6 2001:0430::1/128
BGP route information for prefix 2001:1::1/128
Received route learned from internal peer 2.2.2.2 (best route)
Route placed in IP forwarding table
Best to advertise to external peers
Address Family Identifier (AFI) is ip-v6
Subsequent Address Family Identifier (SAFI) is unicast
MPLS in-label is none
MPLS out-label is 17
Next hop IP address is ::ffff:2.2.2.2 (metric 3)
Multi-exit discriminator is 0
Local preference is 100
Weight is 0
Origin is IGP
AS path is 65021
Example 4—Displays information about next hop routers
for VRF PE 11 in the IPv4 VPN address family
host1:pe1#show ip bgp vpnv4 vrf pe11 next-hops
Indirect next-hop 11.11.11.2
Resolution in IP route table of VR pe11
Reachable (metric 0)
IP indirect next-hop index 35
Direct next-hop ATM2/0.11 (11.11.11.2)
Resolution in IP tunnel-route table of VR pe11
Not reachable
Reference count is 1
Indirect next-hop 2.2.2.2
Resolution in IP route table of VR pe1
IP indirect next-hop index 123
Reachable (metric 100)
Direct next-hop POS4/0 (10.10.10.1)
POS4/1 (12.12.12.1)
Resolution in IP tunnel-route table of VR pe1
MPLS indirect next-hop index 578
Reachable (metric 100)
Direct next-hop Push 23, POS4/0 (10.10.10.1)
Push 43, POS4/1 (12.12.12.1)
Reference count is 1
Example 5—Displays information about routes in the
route-target address family
host1# show ip bgp route-target signaling
Local BGP identifier 13.13.13.13, local AS 100
4 routes (240 bytes)
3 destinations (228 bytes) of which 3 have a route
3 routes selected for route tables installation
0 unicast/multicast routes selected for route table installation
0 unicast/multicast tunnel-usable routes selected for route table installation
0 tunnel-only routes selected for tunnel-route table installation
10 path attribute entries (1520 bytes)
Local-RIB version 19. FIB version 19.
Status codes: > best, * invalid, s suppressed, d dampened, r rejected,
a auto-summarized
Prefix Peer Next-hop MED LocPrf Weight Origin
> 0:0:0/0 12.12.12.12 12.12.12.12 100 0 IGP
> 100:100:1/96 11.11.11.11 11.11.11.11 100 0 IGP
100:100:1/96 14.14.14.14 14.14.14.14 100 0 IGP
> 100:100:2/96 11.11.11.11 11.11.11.11 100 0 IGP
Example 6—Displays information for routes in the
route-target address family corresponding to the specified RT-MEM-NLRI
host1#show ip bgp route-target signaling 100:100:1/96
BGP route information for prefix 100:100:1/96
Received route learned from internal peer 11.11.11.11 (best route)
Route not placed in IP forwarding table
Best to advertise to both internal and external peers
Address Family Identifier (AFI) is ip-v4
Subsequent Address Family Identifier (SAFI) is route-target-signaling
Next hop IP address is 11.11.11.11 (metric 0)
Multi-exit discriminator is not present
Local preference is 100
Weight is 0
Origin is IGP
AS path is empty
Received route learned from internal peer 14.14.14.14
Route not placed in IP forwarding table
Do not advertise to any peers
Address Family Identifier (AFI) is ip-v4
Subsequent Address Family Identifier (SAFI) is route-target-signaling
Next hop IP address is 14.14.14.14 (metric 0)
Multi-exit discriminator is not present
Local preference is 100
Weight is 0
Origin is IGP
AS path is empty
Example 7—Displays for network routes in the route-target
address family
host1:pe1#show ip bgp route-target signaling network
Prefix Weight Route-map Backdoor
102:111:34/96 No
1111111111:23:1/96 No
host1:pe1#show ip bgp route-target signaling network 102:111:34
Prefix Weight Route-map Backdoor
102:111:34/96 No
Example 8—Error message generated when a prefix
less than 32 or greater than 96 is specified for the RT-MEM-NLRI
You can use the field options to display filtered information
about a specified network or all networks in the BGP routing table.
Only the fields that you specify are displayed, except that the Prefix
field is always displayed.
The stale field option shows
which routes are stale due to peer restart.
Examples
host1:5#show ip bgp fields peer next-hop next-hop-cost
host1:pe1#show ip bgp fields best peer next-hop stale
Prefix Stale Peer Next-hop
> 10.22.22.1/32 stale 10.12.12.2 10.12.12.2
> 10.22.22.2/32 stale 10.12.12.2 10.12.12.2
> 10.22.22.3/32 stale 10.12.12.2 10.12.12.2
> 10.33.33.1/32 10.13.13.3 10.13.13.3
> 10.33.33.2/32 10.13.13.3 10.13.13.3
> 10.33.33.3/32 10.13.13.3 10.13.13.3
You can use the default-fields route command to specify default fields to be displayed by subsequently
issued show ip bgp commands.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option.
Field descriptions for introductory fields displayed only
when the intro keyword has been issued
Local BGP identifier—BGP router ID of the local
router
routes—Total number of routes stored in the BGP
routing table and amount of memory consumed by routes. If several
peers have advertised a route to the same prefix, all routes are included
in this count.
destinations—Number of routes to unique prefixes
stored in the BGP routing table and amount of memory consumed by routes.
If several peers have advertised a route to the same prefix, only
the best route is included in this count.
routes selected for route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP routing table, plus prefixes for which there are currently no routes
but which have had to be withdrawn from peers to which these prefixes
may been previously advertised
unicast/multicast routes selected for route table installation—Number
of unicast routes in the BGP routing table that have been inserted
into the IP routing table that are also available for use in the multicast
view of the IP routing table
unicast/multicast tunnel-usable routes selected for route
table installation—Number of unicast and multicast routes in
the BGP routing table that have been inserted into the IP routing
table that are also available for use in the IP tunnel routing table
tunnel-only routes selected for tunnel-route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP tunnel routing table
path attribute entries—Number of distinct path attributes
stored in BGP's internal path attributes table. If BGP receives two
routes for different prefixes but with identical path attributes,
BGP will create only one entry in its internal path attribute table
and share it between the two routes to conserve memory.
Local-RIB version—Number that is increased by one
each time a route in that RIB is added, removed or modified.
FIB version—Number that is increased by one each
time BGP updates the routes in the IP routing table based on changes
in the local RIB. The FIB version matches the local-RIB version when
BGP has finished updating the routes in the IP route table. The FIB
version is less than the local-RIB version when BGP is still in the
process of updating the IP routing table.
Statistics baseline set—Timestamp indicating when
the statistics baseline was last set
Example
host1#show ip bgp 0.0.0.0 /0 fields intro
Local BGP identifier 192.168.254.79, local AS 6730
201058 routes (12063492 bytes)
201540 destinations (15317040 bytes) of which 201058 have a route
193909 routes selected for route tables installation
0 unicast/multicast routes selected for route table installation
0 unicast/multicast tunnel-usable routes selected for route table installation
0 tunnel-only routes selected for tunnel-route table installation
35097 path attribute entries (5334744 bytes)
Local-RIB version 20969483. FIB version 20969483.
Statistics baseline set WED JUL 12 2006 10:31:53 METDST
...
Use to display the routes in the specified neighbor’s
or peer group’s Adj-RIBs-Out table.
For peers, the attributes displayed are those associated
with the route before the application of any outbound policy.
For peer groups, the attributes displayed are those associated
with the route after the application of any outbound policy; that
is, the actual advertised attributes.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
You must first enable storage of routes to the Adj-RIBs-Out
tables with the no rib-out disable command or the no neighbor rib-out disable command. Otherwise, this command returns an error message.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Field descriptions
Local BGP identifier—BGP router ID of the local
router
routes—Total number of routes stored in the BGP
routing table. If several peers have advertised a route to the same
prefix, all routes are included in this count.
distinct destinations—Number of routes to unique
prefixes stored in the BGP routing table. If several peers have advertised
a route to the same prefix, only the best route is included in this
count.
routes selected for route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP routing table
path attribute entries—Number of distinct path attributes
stored in BGP's internal path attributes table. If BGP receives two
routes for different prefixes but with identical path attributes,
BGP will create only one entry in its internal path attribute table
and share it between the two routes to conserve memory.
Prefix—Prefix for the routing table entry
Peer—IP address of BGP peer
Next-hop—IP address of the next hop
MED—Multiexit discriminator for the route
LocPrf—Local preference for the route
Weight—Assigned path weight
Origin—Origin of the route
Example
host1#show ip bgp neighbors 5.72.116.1 advertised-routes
Local BGP identifier 2.2.2.2, local AS 2222
0 routes (0 bytes used), 0 distinct destinations (0 bytes used)
0 routes selected for route table installation
0 path attribute entries (0 bytes used)
Status codes: > best, * invalid, s suppressed, d dampened, r rejected
Prefix Peer Next-hop MED LocPrf Weight Origin
> 0.0.0.0/0 5.72.116.1 5.72.1.1 0 IGP
> 10.10.0.87/32 5.72.116.1 5.72.1.1 0 inc.
> 13.13.13.13/32 5.72.116.1 5.72.1.1 0 IGP
> 33.0.0.0/16 0.0.0.0 5.72.1.1 1 32768 inc.
> 33.0.0.0/24 0.0.0.0 5.72.1.1 1 32768 inc.
> 44.44.0.0/16 5.72.116.1 5.72.1.1 0 inc.
Use to display information about routes that have nonnatural
network masks.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Field descriptions
Local BGP identifier—BGP router ID of the local
router
routes—Total number of routes stored in the BGP
routing table. If several peers have advertised a route to the same
prefix, all routes are included in this count.
distinct destinations—Number of routes to unique
prefixes stored in the BGP routing table. If several peers have advertised
a route to the same prefix, only the best route is included in this
count.
routes selected for route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP routing table
path attribute entries—Number of distinct path attributes
stored in BGP's internal path attributes table. If BGP receives two
routes for different prefixes but with identical path attributes,
BGP will create only one entry in its internal path attribute table
and share it between the two routes to conserve memory.
Prefix—Prefix for the routing table entry
Peer—IP address of BGP peer
Next-hop—IP address of the next hop
MED—Multiexit discriminator for the route
LocPrf—Local preference for the route
Weight—Assigned path weight
Origin—Origin of the route
Example
host1#show ip bgp cidr-only
Local BGP identifier 111.111.111.111, local AS 444
0 routes (0 bytes used), 0 distinct destinations (0 bytes used)
0 routes selected for route table installation
0 path attribute entries (0 bytes used)
Status codes: > best, * invalid, s suppressed, d dampened, r rejected
Prefix Peer Next-hop MED LocPrf Weight Origin
33.0.0.0/24 5.72.1.1 5.72.1.1 1 0 inc.
> 44.44.0.0/24 0.0.0.0 192.168.1.1 1 32768 inc.
Use to display all routes that are members of the specified
BGP community. Does not accept regular expressions.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
Specify the community number in AA:NN format:
AA—Number that identifies
the autonomous system
NN—Number that identifies
the community within the autonomous system
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Field descriptions
Local router ID—BGP router ID of the local router
local AS—Local autonomous system number
paths—Total number of routes stored in the BGP routing
table. If several peers have advertised a route to the same prefix,
all routes are included in this count.
distinct prefixes—Number of routes to unique prefixes
stored in the BGP routing table. If several peers have advertised
a route to the same prefix, only the best route is included in this
count.
paths selected for route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP routing table
path attribute entries—Number of distinct path attributes
stored in BGP's internal path attributes table. If BGP receives two
routes for different prefixes but with identical path attributes,
BGP will create only one entry in its internal path attribute table
and share it between the two routes to conserve memory.
Prefix—Prefix for the route table entry
Peer—IP address of BGP peer
Next-hop—IP address of the next hop
MED—Multiexit discriminator
CalPrf—Calculated preference
Weight—Assigned path weight
Origin—Origin of the route
Example
host1#show ip bgp community 999:999
Local router ID 192.168.1.153, local AS 100
40845 paths, 40845 distinct prefixes (2940840 bytes used)
40845 paths selected for route table installation
13651 path attribute entries (1864908 bytes used)
Use to display all routes that are members of communities
on the specified BGP community list.
Accepts regular expressions.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Field descriptions
Local router ID—BGP router ID of the local router
local AS—Local autonomous system number
paths—Total number of routes stored in the BGP routing
table. If several peers have advertised a route to the same prefix,
all routes are included in this count.
distinct prefixes—Number of routes to unique prefixes
stored in the BGP routing table. If several peers have advertised
a route to the same prefix, only the best route is included in this
count.
paths selected for route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP routing table
path attribute entries—Number of distinct path attributes
stored in BGP's internal path attributes table. If BGP receives two
routes for different prefixes but with identical path attributes,
BGP will create only one entry in its internal path attribute table
and share it between the two routes to conserve memory.
Prefix—Prefix for the routing table entry
Peer—IP address of BGP peer
Communities—Community number in AA:NN format:
AA—Number that identifies
the autonomous system
NN—Number that identifies
the community within the autonomous system
Example
host1#show ip bgp community-list 1 fields peer communities
Local router ID 192.168.1.153, local AS 100
72077 paths, 72077 distinct prefixes (5189544 bytes used)
72077 paths selected for route table installation
21627 path attribute entries (2957324 bytes used)
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Field descriptions
Local router ID—IP address of the local router
local AS—Number of the local AS
Route flap dampening—Status of route flap dampening
(enabled or disabled)
Decay half-life—Time (in minutes) after which a
penalty is decreased. After the route has been assigned a penalty,
the penalty is decreased by half after the half-life period (which
is 15 minutes by default).
Cutoff threshold—Value of the penalty for a flapping
route below which the route is unsuppressed
Reuse threshold—Time (in hours:minutes:seconds)
after which the path will be made available
Maximum hold-down time—Interval, in seconds, after
not receiving a keepalive message that the software declares a peer
dead
route flap history—Status of route flap history
for route paths
Prefix—The prefix for the IP address
Peer—IP address of the BGP peer
Status—Status of route dampening of the route path
Figure of Merit—A measure of the route's stability.
Higher values indicate more recent route flap activity or less stability.
Time until Reuse/Remove—Time until the route is
either reused (if currently suppressed) or its history entry is removed
(if currently available)
Example
host1#show ip bgp dampened-paths
Local router ID 192.168.1.218, local AS 100
Route flap dampening is enabled
Decay half-life is 10 minutes while reachable, 20 minutes while unreachable
Cuttoff threshold is 2000, reuse threshold is 750
Maximum hold-down time is 20 minutes
60 paths have active route flap histories (4560 bytes used)
11 paths are suppressed
Figure Time until
Prefix Peer Status of Merit Reuse/Remove
24.31.128.0/19 10.2.1.48 Suppressed/Reachable 2681 00:17:00
24.93.128.0/19 10.2.1.48 Suppressed/Reachable 2681 00:17:00
24.95.0.0/19 10.2.1.48 Suppressed/Reachable 2681 00:17:00
128.192.0.0/16 10.2.1.48 Available 1997 00:15:08
148.161.0.0/16 10.2.1.48 Available 1997 00:15:10
164.81.0.0/16 10.2.1.48 Available 1997 00:15:11
192.29.60.0/24 10.2.1.48 Available 1997 00:15:12
192.58.228.0/24 10.2.1.48 Available 1997 00:15:15
192.88.8.0/24 10.2.1.48 Available 1997 00:15:17
192.107.253.0/24 10.2.1.48 Suppressed/Unreachable 4331 00:19:42
192.195.44.0/24 10.2.1.48 Suppressed/Reachable 2923 00:19:15
192.195.49.0/24 10.2.1.48 Suppressed/Reachable 2923 00:19:15
192.195.50.0/24 10.2.1.48 Suppressed/Reachable 2923 00:19:15
192.197.150.0/24 10.2.1.48 Available 1997 00:15:25
192.222.89.0/24 10.2.1.48 Suppressed/Unreachable 2788 00:19:42
204.17.195.0/24 10.2.1.48 Suppressed/Reachable 2923 00:17:20
204.52.186.0/24 10.2.1.48 Available 1997 00:15:26
204.68.178.0/24 10.2.1.48 Available 1000 00:19:38
204.101.0.0/16 10.2.1.48 Available 1997 00:15:29
204.128.227.0/24 10.2.1.48 Suppressed/Reachable 2923 00:17:16
204.146.24.0/22 10.2.1.48 Available 1997 00:15:30
204.146.24.0/24 10.2.1.48 Available 1997 00:15:30
Use to display all routes whose AS-path matches the specified
AS-path access list.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Field descriptions
Local router ID—BGP router ID of the local router
local AS—Local autonomous system number
paths—Total number of routes stored in the BGP routing
table. If several peers have advertised a route to the same prefix,
all routes are included in this count.
distinct prefixes—Number of routes to unique prefixes
stored in the BGP routing table. If several peers have advertised
a route to the same prefix, only the best route is included in this
count.
paths selected for route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP routing table
path attribute entries—Number of distinct path attributes
stored in BGP's internal path attributes table. If BGP receives two
routes for different prefixes but with identical path attributes,
BGP will create only one entry in its internal path attribute table
and share it between the two routes to conserve memory.
Prefix—Prefix for the routing table entry
Next-hop—IP address of the next hop
MED—Multiexit discriminator
CalPrf—Calculated preference
Weight—Assigned path weight
AS path—Autonomous system path
Example
host1#show ip bgp filter-list 1
Local router ID 192.168.1.153, local AS 100
72080 paths, 72080 distinct prefixes (5189760 bytes used)
72080 paths selected for route table installation
21667 path attribute entries (2962828 bytes used)
Local BGP identifier—BGP router ID of the local
router where route flap dampening is enabled
local AS—Local autonomous system number
Route flap dampening—Status of route flap dampening
(enabled or disabled)
Default decay half-life—Time (in minutes) after
which a penalty is decreased. After the route has been assigned a
penalty, the penalty is decreased by half after the half-life period
(which is 15 minutes by default).
Default cutoff threshold—Value of the penalty for
a flapping route below which the route is unsuppressed
Default reuse threshold—Time in minutes after which
the path will be made available
Default maximum hold-down time—Interval, in seconds,
after not receiving a keepalive message that the software declares
a peer dead
route flap history—Status of route flap history
for route paths
Prefix—Prefix for the routing table entry
Peer—IP address of BGP peer
Status—Status of route dampening of the route path
Figure of Merit—Measure of the route's stability.
Higher values indicate more recent route flap activity or less stability.
Time until Reuse/Remove—Time in hours:minutes:seconds
until the route is either reused (if currently suppressed) or its
history entry is removed (if currently available)
Example
host1#show ip bgp flap-statistics
Local BGP identifier 192.168.1.232, local AS 100
Route flap dampening is enabled
Default decay half-life is 15 minutes
Default cutoff threshold is 2000, default reuse threshold is 750
Default maximum hold-down time is 60 minutes
307 paths have active route flap histories (27016 bytes used)
5 paths are suppressed
Figure Time until
Prefix Peer Status of Merit Reuse/Remove
24.201.0.0/18 192.168.1.158 Available 925 00:58:23
24.201.64.0/18 192.168.1.158 Available 925 00:58:23
52.128.224.0/19 192.168.1.158 Available 750 00:54:12
61.8.0.0/19 192.168.1.158 Available 993 00:59:53
61.8.30.0/24 192.168.1.158 Available 993 00:59:53
62.229.73.0/24 192.168.1.158 Unreachable 925 00:58:23
63.69.150.0/24 192.168.1.158 Available 750 00:54:12
Use to display information about routes that have inconsistent
AS-paths.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Field descriptions
Local BGP identifier—BGP router ID of the local
router
local AS—Local autonomous system number
routes—Total number of routes stored in the BGP
routing table. If several peers have advertised a route to the same
prefix, all routes are included in this count.
distinct destinations—Number of routes to unique
prefixes stored in the BGP routing table. If several peers have advertised
a route to the same prefix, only the best route is included in this
count.
routes selected for route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP routing table
path attribute entries—Number of distinct path attributes
stored in BGP's internal path attributes table. If BGP receives two
routes for different prefixes but with identical path attributes,
BGP will create only one entry in its internal path attribute table
and share it between the two routes to conserve memory.
Prefix—Prefix for the routing table entry
Next-hop—IP address of the next hop
MED—Multiexit discriminator for the route
LocPrf—Local preference for the route
Weight—Assigned path weight
Origin—Origin of the route
AS-path—AS-path through which this route bas been
advertised
Example
host1#show ip bgp inconsistent-as
Local BGP identifier 192.168.1.10, local AS 123
0 routes (0 bytes used), 0 distinct destinations (0 bytes used)
0 routes selected for route table installation
0 path attribute entries (0 bytes used)
Status codes: > best, * invalid, s suppressed, d dampened, r rejected
Use to display all routes with a prefix that is equal
to or more specific than the specified prefix.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgpshow ip bgp for descriptions of the fields displayed by this keyword.
Field descriptions
Local router ID—BGP router ID of the local router
local AS—Local autonomous system number
paths—Total number of routes stored in the BGP routing
table. If several peers have advertised a route to the same prefix,
all routes are included in this count.
distinct prefixes—Number of routes to unique prefixes
stored in the BGP routing table. If several peers have advertised
a route to the same prefix, only the best route is included in this
count.
paths selected for route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP routing table
path attribute entries—Number of distinct path attributes
stored in BGP's internal path attributes table. If BGP receives two
routes for different prefixes but with identical path attributes,
BGP will create only one entry in its internal path attribute table
and share it between the two routes to conserve memory.
Prefix—Prefix for the routing table entry
Peer—IP address of BGP peer
Next-hop—IP address of the next hop
MED—Multiexit discriminator
CalPrf—Calculated preference
Weight—Assigned path weight
Origin—Origin of the route
Example
host1#show ip bgp 12.2.0.0 255.255.0.0 longer-prefixes
Local router ID 192.168.1.153, local AS 100
72074 paths, 72074 distinct prefixes (5189328 bytes used)
72074 paths selected for route table installation
21685 path attribute entries (2965327 bytes used)
BGP neighbor ID—BGP identifier of the BGP neighbor
remote AS—Remote AS of the BGP neighbor
Description—Textual description of the BGP neighbor
Member of peer group—Name of the peer group of which
this BGP neighbor is a member
Remote router ID—Router ID of the remote router
negotiated BGP version—BGP version being used to
communicate with the neighbor
Administrative status—Desired state of the peer
connection
Connection state—Current state of the BGP connection
Connection has been established—Time that TCP connection
was established
Reason for last reset—Reason for last reset of the
BGP session
TCP error code—TCP connection error type
Default originate—Status of default originate (enabled
or disabled)
EBGP multi-hop—Status of EBGP multihop (enabled
or disabled)
IBGP single-hop—Status of IBGP single hop (enabled
or disabled)
Next hop self—Status of next-hop self (enabled or
disabled)
Route reflector status—Identifies the neighbor as
a route-reflector client
Neighbor weight—Weight of routes from the BGP neighbor
Incoming update distribute list—Distribute list
for incoming routes, if configured
Outgoing update distribute list—Distribute list
for outgoing routes, if configured
Incoming update filter list—Update filter list for
incoming routes, if configured
Outgoing update filter list—Update filter list for
outgoing route, if configured
Weight filter list—Weight filter list for routes,
if configured
Incoming route map—Incoming route map, if configured
Outgoing route map—Outgoing route map, if configured
Connect retry interval—Time between a BGP peer’s
attempts to reestablish a connection to the neighbor
Minimum route advertisement interval—Minimum time
between route advertisements
Minimum AS origination interval—Minimum time between
advertisement of changes within the speaker’s AS
Configured keep-alive interval—Frequency of keep-alive
messages generated
Negotiated keepalive interval—Negotiated frequency
of keep-alive messages generated
Configured hold time—Configured maximum time allowed
between received messages
Negotiated hold time—Negotiated maximum time allowed
between received messages
Configured update source IP address—IP address used
when sending update messages
Local IP address—Local IP address used for TCP communication
to this peer
Local port—Local TCP port number used for TCP communication
to this peer
Remote IP address—Remote IP address used for TCP
communication to this peer
Remote port—Remote IP address used for TCP communication
to this peer
Total messages sent—Total BGP messages sent to this
neighbor
Total messages received—Total BGP messages received
from this neighbor
Total update messages sent—Total BGP update messages
sent to this neighbor
Total update messages received—Total BGP update
messages received from this neighbor
Time since last update message was received—Time
since last BGP update message was received from this neighbor
Address Family dependent capabilities—Lists type
of ORF send and receive capability per address family and whether
it is advertised (configured) or received
Maximum number of ORF entries—Limit of ORF entries
that will be accepted from the neighbor
Capability advertisement—Lists whether the specific
capability (capabilities option, deprecated dynamic capability negotiation,
dynamic capability negotiation, multiprotocol extensions, route refresh,
route refresh (Cisco proprietary), four octet AS numbers, and graceful
restart) has been sent, received, or both
Multi-protocol extensions negotiation—Lists the
relevant address family and whether it has been sent, received, or
used
BFD—Status of BFD configuration, enabled, enabled
but not supported because the peer is an IBGP neighbor a multihop
EBGP neighbor, or disabled
BFD session—Type and address of peer to which BFD
session is established
Minimum transmit interval—Desired interval between
BFD packets transmitted to members of peer group
Minimum receive interval—Desired interval between
BFD packets received from members of peer group
Multiplier—Number of BFD packets that can be missed
before declaring BFD session down
Negotiated detection time—Interval between BFD packets
negotiated by peers
Advertise-map—Name of route map that specifies routes
to be advertised when routes in conditional route maps are matched
Condition-map—Name of route map that specifies routes
to be matched by routes in the BGP routing table
Sequence—Position of the specified advertise route
map in a list of advertise route maps configured for a particular
peer within the same address-family. A lower sequence number has a
higher priority; that route map is processed before one with a higher
sequence number.
Status—Status of the routes specified by the route
map, advertise (route map condition has been met) or withdraw (route
map condition has not been met; regardless of this status, the specified
routes might be governed by another route map with a lower sequence
number and actually advertised or not according to that map
Example
host1#show ip bgp neighbors
BGP neighbor ID 10.2.1.48, remote AS 11488 (external peer)
Remote router ID is 172.31.1.48, negotiated BGP version is 4
Administrative status is Start, connection state is Established
Reason for last reset was tcp connection error
TCP error code 60 (Connection timed out)
Connection has been established 1 time, up for 0 17:42:31
Options:
Default originate is disabled
EBGP multi-hop is enabled
IBGP single-hop is disabled
Next hop self is disabled
seconds
Policy:
Neighbor weight is 100
Timers:
Connect retry interval is 120 seconds
Minimum route advertisement interval is 30 seconds
Minimum AS origination interval is 10 seconds
Configured keep-alive interval is 30 seconds, negotiated 30
seconds
Configured hold time is 90 seconds, negotiated 90
TCP connection:
Local IP address is 192.168.1.218, local port is 1024
Remote IP address is 10.2.1.48, remote port is 179
Statistics:
Total of 4100 messages sent, 44913 messages received
2053 update messages sent, 42785 update messages received
0 00:00:17 since last update message was received
Fields relevant to multiprotocol extensions:
Multi-protocol extensions negotiation:
ip-v4 unicast: sent, received, used
ip-v6 unicast-labeled: sent, received, used
For the graceful restart capability, additional information
is presented.
Fields concerning graceful restart attributes that apply
to peers as a whole (for all address families):
Graceful restart negotiation:
Sent restart time is 120 seconds
Sent restart state bit is zero (we are not restarting)
Received restart time is 120 seconds
Received restart state bit is zero (peer is not restarting)
Maximum time for keeping stale paths is 360 seconds
Fields concerning attributes that apply to peers a particular
address family:
Peer is capable of preserving forwarding stat(3)
Peer preserved forwarding state during last restart
We have received an end-of-rib marker from the peer
We have sent an end-of-rib marker to the peer
Fields relevant if the peer is currently restarting:
Graceful restart waiting for the session to come back up
Restart-time advertised by the peer is 120 seconds
Remaining time for the peer to come back up is 117 seconds
Remaining time for keeping stale routes from the peer is 357 seconds
Fields relevant during reconvergence after the peer has
restarted:
Graceful restart negotiation:
Sent restart time is 120 seconds
Sent restart state bit is zero (we are not restarting)
Received restart time is 120 seconds
Received restart state bit is zero (peer is not restarting)
Maximum time for keeping stale paths is 300 seconds
Remaining time for keeping stale routes from the peer is 297 seconds
For BFD, additional information is presented.
Fields relevant to BFD when BFD is not configured:
BFD is disabled
Fields relevant to BFD when BFD is configured for an IBGP
peer:
BFD is enabled but not supported (IBGP neighbor)
Fields relevant to BFD when BFD is configured for a multihop
EBGP peer:
BFD is enabled but not supported (multi-hop EBGP neighbor)
Fields relevant to BFD when BFD is configured but the
BGP session is not established:
BFD is enabled:
Single-hop IPv4 BFD session to 1.2.3.4
Minimum transmit interval is 300 ms
Minimum receive interval is 300 ms
Multiplier is 3
Waiting for BGP to become established before initiating BFD session
Fields relevant to BFD when BFD is configured, the BGP
session is established, but the BFD protocol session is not up:
BFD is enabled:
Single-hop IPv4 BFD session to 1.2.3.4
Minimum transmit interval is 300 ms
Minimum receive interval is 300 ms
Multiplier is 3
BFD session is down
Fields relevant to BFD when BFD is configured, the BGP
session is established, and the BFD protocol session is up:
BFD is enabled:
Single-hop IPv4 BFD session to 1.2.3.4
Minimum transmit interval is 300 ms
Minimum receive interval is 300 ms
Multiplier is 3
BFD session is up for 00:00:50
Negotiated detection time is 900 ms
Fields relevant to conditional advertisement:
Advertise-map is advertisetoR1
Condition-map: trigger1
Sequence: 5
Status: Withdraw
Advertise-map is alternatetoR1
Condition-map: trigger2
Sequence: 10
Status: Advertise
Use to display information about routes with a dampening
history for the specified BGP neighbor.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Field descriptions
Local BGP identifier—BGP router ID of the local
router
routes—Total number of routes stored in the BGP
routing table. If several peers have advertised a route to the same
prefix, all routes are included in this count.
distinct destinations—Number of routes to unique
prefixes stored in the BGP routing table. If several peers have advertised
a route to the same prefix, only the best route is included in this
count.
routes selected for route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP routing table
path attribute entries—Number of distinct path attributes
stored in BGP's internal path attributes table. If BGP receives two
routes for different prefixes but with identical path attributes,
BGP will create only one entry in its internal path attribute table
and share it between the two routes to conserve memory.
Prefix—Prefix for the routing table entry
Peer—IP address of BGP peer
Next-hop—IP address of the next hop
MED—Multiexit discriminator for the route
LocPrf—Local preference for the route
Weight—Assigned path weight
Origin—Origin of the route
Example
host1#show ip bgp neighbors 192.168.1.158 dampened-routes
Local BGP identifier 192.168.1.232, local AS 100
120 routes (5760 bytes used), 94 distinct destinations (9024 bytes used)
67 routes selected for route table installation
23 path attribute entries (3450 bytes used)
Use to display path information for the specified BGP
neighbor.
This command displays only the most common path attributes.
BGP internally maintains additional attributes that are not displayed—for
example, the MED, local preference, and communities attributes.
Field descriptions
Address—Hexadecimal number that uniquely identifies
the path attributes
Refcount—Number of routes that share the path attributes
Use to display routes originating from the specified BGP
neighbor before inbound policy is applied.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Field descriptions
Prefix—Prefix for the routing table entry
Peer—IP address of BGP peer
Next-hop—IP address of the next hop
MED—Multiexit discriminator for the route
LocPrf—Local preference for the route
Weight—Assigned path weight
Origin—Origin of the route
Example
host1#show ip bgp neighbors 192.168.1.158 received-routes
Local BGP identifier 111.111.111.111, local AS 444
0 routes (0 bytes used), 0 distinct destinations (0 bytes used)
0 routes selected for route table installation
0 path attribute entries (0 bytes used)
Status codes: > best, * invalid, s suppressed, d dampened, r rejected
Use to display, after inbound policy is applied, all routes
that originate from the specified BGP neighbor.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Field descriptions
Local router ID—BGP router ID of the local router
local AS—Local autonomous system number
paths—Total number of routes stored in the BGP routing
table. If several peers have advertised a route to the same prefix,
all routes are included in this count.‘
distinct prefixes—Number of routes to unique prefixes
stored in the BGP routing table. If several peers have advertised
a route to the same prefix, only the best route is included in this
count.
paths selected for route table installation—Number
of routes in the BGP routing table that have been inserted into the
IP routing table
path attribute entries—Number of distinct path attributes
stored in BGP's internal path attributes table. If BGP receives two
routes for different prefixes but with identical path attributes,
BGP will create only one entry in its internal path attribute table
and share it between the two routes to conserve memory.
Local-RIB version—Number that is increased by one
each time a route in that RIB is added, removed or modified.
FIB version—Number that is increased by one each
time BGP updates the routes in the IP routing table based on changes
in the local RIB. The FIB version matches the local-RIB version when
BGP has finished updating the routes in the IP route table. The FIB
version is less than the local-RIB version when BGP is still in the
process of updating the IP routing table.
Prefix—Prefix for the routing table entry
Peer— IP address of BGP peer
Next-hop—IP address of the next hop
MED—Multiexit discriminator
CalPrf—Calculated preference
Weight—Assigned path weight
Origin—Origin of the route
Example
host1#show bgp ipv6 neighbors 12.12.12.12 routes
Local BGP identifier 11.11.11.11, local AS 400
5 routes (200 bytes)
5 destinations (360 bytes) of which 5 have a route
5 routes selected for route table installation
4 path attribute entries (608 bytes)
Local-RIB version 33. FIB version 33.
Status codes: > best, * invalid, s suppressed, d dampened, r rejected,
a auto-summarized
Prefix Peer Next-hop MED LocPrf Weight Origin
> 3ffe:0:1:1::/64 12.12.12.12 ::102.102.102.2 0 100 0 inc.
Use to display information about networks in an AS.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgpshow ip bgp for descriptions of the fields displayed by this keyword.
Example
host1#show bgp ipv6 network
Prefix Weight Route-map Backdoor
3ffe:0:0:2::/64 No
This command displays only the most common path attributes.
BGP internally maintains additional attributes that are not displayed—for
example, the MED, local preference, and communities attributes.
Field descriptions
Address—Hexadecimal number that uniquely identifies
the path attributes
Refcount—Number of routes that share the path attributes
Description—Textual description of the BGP peer
group
Members—IP addresses of the members of the BGP peer
group
Default originate—Status of default origination
of the BGP peer group
EBGP multi-hop—Status of EBGP multihop for the peer
group
IBGP single-hop—Status of IBGP single hop for the
peer group
BFD—Status of BFD configuration for the peer group
BFD session—Type and address of peer to which BFD
session is established
Minimum transmit interval—Desired time interval
between BFD packets transmitted to members of peer group
Minimum receive interval—Desired time interval between
BFD packets received from members of peer group
Multiplier—Number of BFD packets that can be missed
before declaring BFD session down
Next hop self—Status of next-hop self information
for the peer group
Peers are route reflector clients—BGP peer group
is configured as a route reflector. This field does not appear when
route reflectors are not configured.
weight—Neighbor weights assigned to BGP peer groups
Incoming update distribute list—Distribute lists
for incoming routes, if configured
Outgoing update distribute list—Distribute list
for outgoing routes, if configured
Incoming update filter list—Filter list for incoming
routes, if configured
Outgoing update filter list—Filter list for outgoing
routes, if configured
Weight filter list—Weight filter list for routes,
if configured
Incoming route map—Incoming route map, if configured
Outgoing route map—Outgoing route map, if configured
Minimum route advertisement interval—Minimum time
between route advertisements
Configured update source IP address—IP address used
when sending update messages
Advertise-map—Name of route map that specifies routes
to be advertised when routes in conditional route maps are matched
Condition-map—Name of route map that specifies routes
to be matched by routes in the BGP routing table
Sequence—Position of the specified advertise route
map in a list of advertise route maps configured for a particular
peer group within the same address-family. A lower sequence number
has a higher priority; that route map is processed before one with
a higher sequence number.
Status—Status of the routes specified by the route
map, advertise (route map condition has been met) or withdraw (route
map condition has not been met; regardless of this status, the specified
routes might be governed by another route map with a lower sequence
number and actually advertised or not according to that map
Example
host1#show ip bgp peer-group
BGP peer-group leftcoast, remote AS 200
Peer-group members are external peers
Local AS 100
Administrative status is Start
EBGP multi-hop is disabled
IBGP single-hop is disabled
BFD is enabled:
Single-hop IPv4 BFD session
Minimum transmit interval is 300 ms
Minimum receive interval is 300 ms
Multiplier is 3
Maximum update message size is 1024 octets
Neighbor weight is 0
Connect retry interval is 10 seconds initially
Configured keep-alive interval is 30 seconds
Configured hold time is 90 seconds
Minimum route advertisement interval is 30 seconds
Minimum AS origination interval is 10 seconds
Graceful restart negotiation:
Restart time is 120 seconds
Stale paths time is 360 seconds
Configuration for address family ipv4:unicast
RIB-out is disabled
Default originate is disabled
Next hop self is disabled
Next hop unchanged is disabled
Don't send communities
Inbound soft reconfiguration is disabled
Private AS number stripping is disabled
Override site AS with provider AS is disabled
No loops in the received AS-path are allowed
Members: 10.2.2.2 10.3.3.3
Fields relevant to conditional advertisement:
Advertise-map is advertisetoR1
Condition-map: trigger1
Sequence: 5
Status: Withdraw
Advertise-map is alternatetoR1
Condition-map: trigger2
Sequence: 10
Status: Advertise
Use to display information about BGP routes whose AS-path
matches the specified regular expression.
Use with only a single regular expression element.
You can use output filtering.
You must enclose any elements containing a space within
quotation marks (“ element” ).
Regular expressions match numbers for which the specified
path is a substring—for example, if you specify 20, 200 matches because 20 is a substring of 200. You can disallow substring
matching by using the underscore (_) metacharacter
to constrain matching to the specified pattern, for example, _20_.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
Use to display information about BGP routes whose AS-path
matches the specified regular expression.
Use with one or more regular expression elements.
You cannot use output filtering.
You do not have to enclose elements containing a space
within quotation marks.
Regular expressions match numbers for which the specified
path is a substring—for example, if you specify 20, 200 matches because 20 is a substring of 200. You can disallow substring
matching by using the underscore (_) metacharacter
to constrain matching to the specified pattern, for example, _20_.
Reports whether the indirect next hop of a route is unreachable;
if not, displays the IGP cost to the indirect next hop.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
In many cases, you can use either show ip bgp regexp or show ip bgp quote-regexp with the same results. For example, to show all routes whose AS-path
starts with 200 you can use either command as follows:
host1#show ip bgp regexp ^200
Local router ID 192.168.1.232, local AS 100
6 paths, 3 distinct prefixes (324 bytes used)
3 paths selected for route table installation
7 path attribute entries (872 bytes used)
If the regular expression contains one or more
spaces, you must place quotation marks around the expression in the show ip bgp quote-regexp command but not in the show ip bgp regexp command. For example, to show all
routes whose AS-path contains AS number 10 followed immediately by
AS number 20:
host1#show ip bgp regexp 10 20
Local router ID 192.168.1.232, local AS 100
6 paths, 3 distinct prefixes (324 bytes used)
3 paths selected for route table installation
7 path attribute entries (872 bytes used)
The show ip bgp regexp command accepts multiple strings as arguments. If you try to apply
output filtering, the command interprets the filter information as
a regular expression and fails:
host1#show ip bgp regexp ^200 | begin Prefix
% invalid regular expression
Because the show ip bgp quote-regexp command accepts only one string as an argument to the regular expression,
output filtering is possible:
You can use the field options to display filtered information
about BGP neighbors.
If you filter the display with field options, the usual
introductory information about BGP attributes is displayed only if
you issue the intro fields option. See show ip bgp for descriptions of the fields
displayed by this keyword.
You can use the default-fields peer command to specify default fields to be displayed by subsequently
issued show ip bgp summary commands.
Field descriptions
Local router ID—Router ID of the local router
Local AS—AS number of local router
Administrative state—BGP administrative state, start
or stop
BGP Operational state—Operational state, up, down,
or overload
Shutdown in overload state—Status, enabled or disabled
Default local preference—Default value for local
preference
IGP synchronization—Synchronization status, enabled
or disabled
Default originate—Whether network 0.0.0.0 is redistributed
into BGP (enabled) or not (disabled)
Auto-summary—Status of auto summarization of routes
redistributed into BGP
Always compare MED—Status, enabled or disabled
Compare MED within confederation—Status, enabled
or disabled
Advertise inactive routes—Status, enabled or disabled
Advertise best external route to internal peer—Status,
enabled or disabled
Enforce first AS—Status, enabled or disabled
Missing MED as worst—Status, enabled or disabled
Route flap dampening—Status, enabled or disabled
Maximum number of equal-cost EBGP paths—Number of
paths
Maximum number of equal-cost IBGP paths—Number of
paths
Log neighbor changes—Status, enabled or disabled
Fast External Fallover—Status, enabled or disabled
No maximum received AS-path length—Indicates whether
limit is set for AS path length and, if set, the limit
BGP administrative distances—Distances for external,
internal, and local BGP routes
Router is a route reflector—Indicates whether the
router has been configured as a route reflector
Client-to-client reflection—Whether client-to-client
reflection is configured (enabled) or not (disabled)
Cluster ID—Identifying number for cluster ID
Route-target filter—Status, enabled or disabled
Default IPv4-unicast—Status, enabled or disabled
Redistribution of iBGP routes—Status, enabled or
disabled
Check reachability of next-hops for VPN routes—Status,
enabled or disabled
Graceful restart—Status, enabled or disabled
Global graceful-restart restart time—Time in seconds
Global graceful-restart stale paths time—Time in
seconds
Graceful-restart path selection defer time—Time
in seconds
Route Distinguisher—RD assigned to the VRF
Confederation ID—Confederation ID
Confederation peers—Confederation peers
Import route map—Route map associated with the VRF
that filters and modifies routes imported to the VRF from the global
BGP VPN RIB. The map applies to both IPv4 and IPv6 routes, unless
the field name is preceded by IPv4 (applies the map to only IPv4 routes)
or IPv6 (applies the map to only IPv6 routes).
Export route map—Route map associated with the VRF
that modifies and filters routes exported by the VRF to the global
BGP VPN RIB. The map applies to both IPv4 and IPv6 routes, unless
the field name is preceded by IPv4 (applies the map to only IPv4 routes)
or IPv6 (applies the map to only IPv6 routes). The can filter routes
text appears only if the filter keyword
was issued for export map.
Global import route map—Route map associated with
the VRF that modifies routes imported to the VRF from the global BGP
non-VPN RIB. The map applies to both IPv4 and IPv6 routes, unless
the field name is preceded by IPv4 (applies the map to only IPv4 routes)
or IPv6 (applies the map to only IPv6 routes).
routes imported from global table—Number of routes
imported from the global BGP non-VPN RIB; also lists the maximum number
of routes that can be imported
Global export route map—Route map associated with
the VRF that modifies routes exported by the VRF to the global BGP
non-VPN RIB. The map applies to both IPv4 and IPv6 routes, unless
the field name is preceded by IPv4 (applies the map to only IPv4 routes)
or IPv6 (applies the map to only IPv6 routes).
Local-RIB version—Number that is increased by one
each time a route in that RIB is added, removed or modified.
FIB version—Number that is increased by one each
time BGP updates the routes in the IP routing table based on changes
in the local RIB. The FIB version matches the local-RIB version when
BGP has finished updating the routes in the IP route table. The FIB
version is less than the local-RIB version when BGP is still in the
process of updating the IP routing table.
Neighbor—BGP neighbors
AS—AS number of the peer
Ver—Negotiated BGP version number
State—State of the connection
Up/down time—Time the connection has been up or
down
Messages sent—Number of messages sent to peer
Messages received—Number of messages received from
peer
Prefixes received—Number of prefixes received from
peer
Rib Ver—Last RIB version queued to be sent to peer
Send Q—Number of messages queued to be sent to peer
More InQ—Status indicating whether any messages
are waiting to be sent to peer
Example 1
host1#show bgp ipv6 summary
Local router ID 10.13.13.13, local AS 400
Administrative state is Start
BGP Operational state is Up
Shutdown in overload state is disabled
Default local preference is 100
IGP synchronization is disabled
Default originate is disabled
Always compare MED is disabled
Compare MED within confederation is disabled
Advertise inactive routes is disabled
Advertise best external route to internal peers is disabled
Enforce first AS is disabled
Missing MED as worst is disabled
Route flap dampening is disabled
Maximum number of equal-cost EBGP paths is 2
Maximum number of equal-cost IBGP paths is 2
Log neighbor changes is disabled
Fast External Fallover is disabled
No maximum received AS-path length
BGP administrative distances are 20 (ext), 200 (int), and 200 (local)
Client-to-client reflection is enabled
Cluster ID is 10.13.13.13
Route-target filter is enabled
Default IPv4-unicast is enabled
Redistribution of iBGP routes is disabled
Graceful restart is globally disabled
Global graceful-restart restart time is 120 seconds
Global graceful-restart stale paths time is 360 seconds
Graceful-restart path selection defer time is 360 seconds
This platform supports only the receiver role of graceful restart
Route Distinguisher: 100:11
Import route map: test2-import-map
Export route map: test1-export-map (can not filter routes)
Global import route map: test3-global-import-map
103 routes imported from global table (max 5000 routes allowed)
Global export route map: test4-global-export-map
Local-RIB version 7. FIB version 7.
Messages Messages Prefixes
Neighbor AS State Up/down time Sent Received Received
11.11.11.11 400 Established 00:36:19 78 81 2
12.12.12.12 400 Established 00:36:21 78 78 1
103.103.103.3 300 Established 00:36:34 85 80 2
Example 2—Status of next hop reachability checking
is displayed only if you specify vpnv4.
host1#show ip bgp vpnv4 all summary
Local router ID 10.13.5.19, local AS 100
Administrative state is Start
BGP Operational state is Up
...
Default IPv4-unicast is enabled
Redistribution of iBGP routes is disabled
Check reachability of next-hops for VPN routes is enabled
...
Example 3—Status of fields related to enabling local
AS numbers to be received in routes
host1#show ip bgp summary fields remote-as state rib-version send-queue-length more-in-queue
Send More
Neighbor AS State RIB Ver Q InQ
2.2.2.2 100 Established 2 0 no
Use to display routes that are permitted by a BGP community
list.
Example
host1#show ip community-list
Community List 1:
permit 752877569 (11488:1)
permit 752877570 (11488:2)
permit 752877571 (11488:3)
permit 752877572 (11488:4)
Community List 2:
permit 4294967043 (local-as)
