Monitoring Routing Policy

You can monitor the following aspects of routing policy using show commands:

To Display	Commands
Access lists	show access-list show ip as-path access-list show ipv6 access-list
Community lists	show ip community-list
Policy lists	show ip match-policy-list
Prefix lists	show ip prefix-list
Prefix trees	show ip prefix-tree
Protocols	show ip protocols
Redistribution policies	show ip redistribute
Routes	show ip route
Route maps	show route-map
Interfaces and next hops	show ip route slot 5 192.168.5.4
Static routes	show ip static
Traffic	show ip traffic

You can use the output filtering feature of the show command to include or exclude lines of output based on a text string that you specify. For details, see Command Line Interface in JunosE System Basics Configuration Guide.

show access-list

show ipv6 access-list

Use to display information about access lists.
The displayed information includes the instances of each access list.
Use the detail keyword to display the automatically assigned element ID for each access list entry. Only rules that you explicitly create have element IDs.

Example 1

host1#show access-list
IP Access List 1:
    permit ip host 172.31.192.217 any
    permit ip 12.40.0.0 0.0.0.3 any
    deny ip any any
IP Access List 2:
    permit ip 172.19.0.0 0.0.255.255 any
    deny ip 0.0.0.0 255.255.255.255 any
IP Access List 10:
    permit ip any any
IP Access List 11:
    deny ip any any

Example 2

host1#show access-list detail
IP Access List 1:
    1: permit ip host 172.31.192.217 any
    2: permit ip 12.40.0.0 0.0.0.3 any
    deny ip any any

See show access-list.
See show ipv6 access-list.

show ip as-path-access-list

Use to display information about AS-path access lists.

Example

host1#show ip as-path-access-list
AS Path Access List 1:
    permit  .*
AS Path Access List 2:
    deny  .*
AS Path Access List 3:
    permit  _109_
    deny  .*
AS Path Access List 4:
    permit  _109$
    deny  .*
AS Path Access List 10:
    deny  _109$
    permit  ^108_
    deny  .*

See show ip as-path-access-list.

show ip community-list

Use to display community list information.
Display varies based on whether you issued the ip bgp community new-format command.

Example 1—If you did not issue the ip bgp community new-format command, the display appears as follows:

host1#show ip community-list
Community List 1:
    permit  81200109
    permit  81200110
    permit  81200108
Community List 2:
    deny  81200109
    permit  81200110
    permit  81200108
Community List 4:
    permit local-as
Community List 5:
    permit no-advertise
Community List 6:
    permit no-export
Community List 7:
    permit internet

Example 2—If you did issue the ip bgp community new-format command, the display appears as follows:

host1#show ip community-list
Community List 1:
    permit 1239:1005
    permit 1239:1006
    permit 1239:1004
Community List 2:
    deny 1239:1005
    permit 1239:1006
    permit 1239:1004
Community List 4:
    permit local-as
Community List 5:
    permit no-advertise
Community List 6:
    permit no-export
Community List 7:
    permit internet

See show ip community-list.

show ip match-policy-list

Use to display configured policy lists.

Example

host1#show ip match-policy-list
match-policy-list list1, permit
  Match clauses:
    match access-list addrList1
    match distance 100

See show ip match-policy-list.

show ip prefix-list

Use to display information about the prefix lists currently configured on the router.
Use the summary keyword to display abbreviated information about prefix lists.

Example 1

host1#show ip prefix-list
Prefix-list with the last deletion/insertion: def
ip prefix-list name abc: 4 entries
   seq 5 permit 192.168.0.0/16 le 24
   seq 10 permit 192.178.0.0/16 le 24
   seq 15 deny 195.178.0.0/16 le 24
   seq 20 deny 195.178.0.0/16 le 32
ip prefix-list name def: 1 entries
   seq 5 deny 192.170.0.0/16

Example 2

host1#show ip prefix-list summary
Total memory used for prefix-list: 310 bytes
Prefix-list with the last deletion/insertion: def
ip prefix-list name abc:
   count: 4, range entries: 4, sequences: 5-20
ip prefix-list name def:
   count: 1, range entries: 0, sequences: 5-5

See show ip prefix-list.

show ip prefix-tree

Use to display information about the prefix trees currently configured on the router.
Use the summary keyword to display abbreviated information about prefix trees.

Example 1

host1#show ip prefix-tree
Prefix-tree with the last deletion/insertion: t_abc5
ip prefix-tree name t_abc1: 1 entries
   permit 108.243.0.0/16
ip prefix-tree name t_abc2: 3 entries
   permit 101.10.254.0/24
   permit 102.10.248.0/21
   permit 103.10.192.0/18
   permit 108.109.0.0/16
   permit 108.109.241.0/24
ip prefix-tree name t_abc3: 1 entries
   deny 108.0.0.0/8

Example 2

host1#show ip prefix-tree summary
Total memory used for prefix-tree: 860 bytes
Prefix-tree with the last deletion/insertion: t_abc5
ip prefix-tree name t_abc1:
   count: 1
ip prefix-tree name t_abc2:
   count: 5
ip prefix-tree name t_abc3:
   count: 1

See show ip prefix-tree.

show ip protocols

Use to display detailed information about the protocols currently configured on the router.
Use the summary keyword to display only a list of the configured protocols.
For field descriptions, see the show commands for the individual routing protocols in their respective Configuration Guide chapters.

Example

host1#show ip protocols
Routing Protocol is “ bgp 1”

  Default local preference is 100
  IGP synchronization is enabled
  Always compare MED is disabled
  Router flap damping is disabled
  Administrative Distance: external 20 internal 200 local 200
  Neighbor(s):
    No neighbors are configured
  Routing for Networks:

Routing Protocol is “ ospf 255”  with Router ID 100.100.100.1
  Distance is 110

  Address Summarization:
    None
  Routing for Networks:

Routing Protocol is “ rip” 
  Router Administrative State: enable
  System version RIP1: send = 1, receive = 1 or 2
  Update interval: 30 seconds
  Invalid after: 180  seconds
  hold down time: 120 seconds
  flushed interval: 300 seconds
  Filter applied to outgoing route update is not set
  Filter applied to incoming route update is not set
  No global route map
  Distance is 120
  Interface         Tx   Rx   Auth

  Routing for Networks:
    10.2.1.0/255.255.255.0

See show ip protocols.

show ip redistribute

Use to display configured route redistribution policy.
Field descriptions
- To—Protocol into which routes are distributed
- From—Protocol from which routes are distributed
- status—Redistribution status
- route map number—Number of the route map

Example

host1#show ip redistribute
To ospf, From static is enabled with route map 4
To ospf, From connected is enabled with route map 3

See show ip redistribute.

show ip route

Use to display the current state of the routing table, including routes that are not used for forwarding.
You can display all routes, a specific route, all routes beginning with a specified address, routes for a particular protocol (BGP, IS-IS, OSPF, or RIP), locally connected routes, internal control routes, static routes, or summary counters for the routing table.
Field descriptions
- Prefix—IP address prefix
- Length—Prefix length
- Type—Protocol type
- Next Hop—IP address of the next hop
- Dist—Distance metric for the route
- Met—Number of hops
- Intf—Interface type and interface specifier

Example 1

host1#show ip route
Protocol/Route type codes:
  I1- ISIS level 1, I2- ISIS level2,
  I- route type intra, IA- route type inter, E- route type external,
  i- metric type internal, e- metric type external,
  O- OSPF, E1- external type 1, E2- external type2,
  N1- NSSA external type1, N2- NSSA external type2

  Prefix/Length   Type    Next Hop       Dist/Met   Intf
  -------------   ----    --------       --------   ------
  172.16.2.0/24    Bgp     192.168.1.102   20/1       fastEthernet0/0
  10.10.0.112/32   Static  192.168.1.1     1/1        fastEthernet0/0
  10.1.1.0/24      Connect 10.1.1.1        0/1        atm3/0.100

Example 2

host1#show ip route static
Protocol/Route type codes:
  I1- ISIS level 1, I2- ISIS level2,
  I- route type intra, IA- route type inter, E- route type external,
  i- metric type internal, e- metric type external,
  O- OSPF, E1- external type 1, E2- external type2,
  N1- NSSA external type1, N2- NSSA external type2

  Prefix/Length    Type    Next Hop     Dist/Met  Intf
  -------------    ----    --------     --------  ------
  10.10.0.112/32   Static  192.168.1.1    1/1       fastEthernet0/0

Example 3

host1#show ip route summary
Unicast routes:
8 total routes, 576 bytes in route entries
0 isis routes
0 rip routes
3 static routes
2 connected routes
1 bgp routes
0 ospf routes
2 other internal routes
0 access routes
0 internally created access host routes

Last route added/deleted: 2::4/128 by BGP
At MON FEB 04 2008 14:18:25 UTC

Unicast routes used only for Multicast RPF check:
0 total routes, 0 bytes in route entries
0 isis routes
0 rip routes
0 static routes
0 connected routes
0 bgp routes
0 ospf routes
0 other internal routes
0 access routes
0 internally created access host routes
0 mbgp routes 
0 dvmrp routes

Last route added/deleted: null by Invalid
At MON FEB 04 2008 14:18:04 UTC

MPLS tunnel routes (not used for forwarding):
3 total routes, 216 bytes in route entries
1 bgp tunnel routes
1 ldp tunnel routes
1 rsvp tunnel routes

Last route added/deleted: 2::4/128 by BGP Tunnel
At MON FEB 04 2008 14:18:26 UTC

See show ip route.

show ip route slot

Use to display the interface and next hop for an IP address in the routing table of a line module specified by the slot it occupies.
- slotNumber—Number of the slot that contains the line module for which the information is displayed
- ipAddress—IP address to look up in the routing table
Field descriptions
- IP address—Address that is reachable through the interface
- Interface—Interface type and specifier associated with the IP address; displays “ Local Interface” if a special interface index is present in the routing table for special IP addresses, such as broadcast addresses
- Next Hop—Next hop to reach the IP address; displays “ ---” if no next hop is associated with the IP address

Example 1

host1#show ip route slot 6 10.10.0.231
  IP address   Interface            Next Hop
------------   ----------------     ------------
10.10.0.231    fastEthernet 6/0     10.10.0.231

Example 2

host1#show ip route slot 9 90.248.1.2
IP address   Interface            Next Hop
------------   ----------------     ------------
90.248.1.2     serial9/23:2         ---

Example 3

host1#show ip route slot 9 90.249.255.255
IP address     Interface            Next Hop
------------   ----------------     ------------
90.249.255.255 Local Interface      ---

See show ip route slot.

show ip static

Use to display the status of static routes in the routing table.
You can specify an optional IP mask that filters specific routes.
Field descriptions
- Prefix—IP address prefix
- Length—Prefix length
- Next Hop—IP address of the next hop
- Met—Number of hops
- Dist—Administrative distance or weight assigned to the route
- Tag—Tag value assigned to the route
- Intf—Interface type and interface specifier

Example

host1#show ip static
Prefix/Length   Next Hop:    Met: Dist:  Tag:  Intf:
10.2.0.0/24     192.168.1.1  1    1      0     ethernet6/0
10.2.1.0/24     192.168.1.1  1    1      1     ethernet6/0
172.31.1.48/32  172.18.2.2   1    1      0     atm5/1.1

See show ip static.

show ip traffic

Use to display statistics about IP traffic.
Field descriptions
- IP Statistics Rcvd:
  - Router Id—Router ID number
  - total—Number of frames received
  - local destination—Frames with this router as their destination
  - hdr errors—Number of packets received that contain header errors
  - addr errors—Number of packets received that contain addressing errors
  - unkn proto—Number of packets received that contain unknown protocols
  - discards—Number of discarded packets
- IP Statistics Frags:
  - reassembled—Number of reassembled packets
  - reasm timed out—Number of reassembled packets that timed out
  - reasm req—Number of requests for reassembly
  - reasm fails—Number of reassembly failures
  - frag ok—Number of fragmented packets reassembled successfully
  - frag fail—Number of fragmented packets reassembled unsuccessfully
  - frag creates—Number of packets created by fragmentation
- IP Statistics Sent:
  - forwarded—Number of packets forwarded
  - generated—Number of packets generated
  - out disc—Number of outbound packets discarded
  - no routes—Number of packets that could not be routed
  - routing discards—Number of packets that could not be routed that were discarded
- IP Statistics Route:
  - routes in table—Number of routes in the routing table
  - timestamp req—Number of requests for a timestamp
  - timestamp rpy—Number of replies to timestamp requests
  - addr mask req—Number of address mask requests
  - addr mask rpy—Number of address mask replies
- ICMP Statistics Rcvd:
  - total—Total number of ICMP packets received
  - errors—Number of error packets received
  - dst unreach—Number of packets received with destination unreachable
  - time exceed—Number of packets received with time-to-live exceeded
  - param probs—Number of packets received with parameter errors
  - src quench—Number of source quench packets received
  - redirects—Number of receive packet redirects received
  - echo req—Number of echo request (ping) packets received
  - echo rpy—Number of echo replies received
  - timestamp req—Number of requests for a timestamp received
  - timestamp rpy—Number of replies of timestamp requests received
  - addr mask req—Number of mask requests received
  - addr mask rpy—Number of mask replies received
- ICMP Statistics Sent:
  - total—Total number of ICMP packets sent
  - errors—Number of error packets sent
  - dest unreach—Number of packets sent with destination unreachable
  - time excd—Number of packets sent with time-to-live exceeded
  - param prob—Number of packets sent with parameter errors
  - src quench—Number of source quench packets sent
  - redirects—Number of send packet redirects sent
  - echo req—Number of echo request (ping) packets sent
  - echo rpy—Number of echo replies sent
  - timestamp req—Number of requests for a timestamp sent
  - timestamp rpy—Number of replies to timestamp requests sent
  - addr mask req—Number of address mask requests sent
  - addr mask rpy—Number of address mask replies sent
- UDP Statistics Rcvd:
  - total—Total number of UDP packets received
  - checksum—Number of checksum error packets received
  - no port—Number of packets received for which no application listener was listening on the destination port
- UDP Statistics Sent:
  - total—Total number of UDP packets sent
  - errors—Number of error packets sent
- TCP Global Statistics Connections:
  - attempted—Number of outgoing TCP connections attempted
  - accepted—Number of incoming TCP connections accepted
  - established—Number of TCP connections established
  - dropped—Number of TCP connections dropped
  - closed—Number of TCP connections closed
- TCP Global Statistics Rcvd:
  - total pkts—Total number of TCP packets received
  - in-sequence pkts—Number of packets received in sequence
  - bytes—Number of bytes received
  - chksum err pkts—Number of checksum error packets received
  - authentication err pkts—Number of authentication error packets received
  - bad offset pkts—Number of packets received with bad offsets
  - short pkts—Number of short packets received
  - duplicate pkts—Number of duplicate packets received
  - out of order pkts—Number of packets received out of order
- TCP Global Statistics Sent:
  - total pkts—Total number of TCP packets sent
  - data pkts—Number of data packets sent
  - bytes—Number of bytes sent
  - retransmitted pkts—Number of packets retransmitted
  - retransmitted bytes—Number of retransmitted bytes
  - OSPF Statistics—Not supported for this version of the router
  - IGMP Statistics—Not supported for this version of the router
  - ARP Statistics—Not supported for this version of the router

Example

host1#show ip traffic
IP statistics: Router Id: 172.31.192.217
  Rcvd:  97833 total, 171059 local destination
  0 hdr errors, 0 addr errors
         167 unkn proto, 0 discards
   Frags: 4 reassembled, 30 reasm timed out, 8 reasm req
         0 reasm fails, 145 frag ok, 0 frag fail
         290 frag creates
 Sent:  15 forwarded, 25144 generated, 0 out disc
         0 no routes,0 routing discards
  Route: 57680 routes in table
    0 timestamp req, 0 timestamp rpy
        0 addr mask req, 0 addr mask rpy

ICMP statistics:
  Rcvd: 561 total, 0 errors, 15 dst unreach
        0 time exceed, 0 param probs, 0 src quench
        0 redirects, 0 echo req, 0 echo rpy
        0 timestamp req, 0 timestamp rpy
        0 addr mask req, 0 addr mask rpy
  Sent: 0 total, 0 errors, 0 dest unreach
        0 time excd, 0 param prob, 0 src quench
        0 redirects, 0 echo req, 0 echo rpy

UDP Statistics:
  Rcvd: 93326 total, 0 checksum errors, 90610 no port
  Sent: 0 total, 0 errors

TCP Global Statistics:
  Connections: 7358 attempted, 4 accepted, 7362 established
        0 dropped, 14718 closed
  Rcvd: 75889 total pkts, 53591 in-sequence pkts, 3120283 bytes
        0 chksum err pkts, 0 authentication err pkts, 0 bad offset
        0 short pkts, 0 duplicate pkts, 0 out of order pkts
  Sent: 82318 total pkts, 44381 data pkts, 656321 bytes
        34 retransmitted pkts, 487 retransmitted bytes

OSPF Statistics:

IGMP Statistics:

ARP Statistics:

See show ip traffic.

show route-map

Use to display the configured route maps.
The displayed information includes the instances of each access list such as match and set commands.

Example

host1(config)#route-map 1 permit 10
host1(config-route-map)#match community 44
host1(config-route-map)#set local-pref 400
host1(config-route-map)#exit
host1(config)#exit
host1#show route-map 1
route-map 1, permit, sequence 10
  Match clauses:
    match community 44
  Set clauses:
    set local-pref 400

See show route-map.