isisSpfStatistics—IS-IS SPF timing and statistic
data
isisSpfTriggers—IS-IS SPF triggering
isisUpdate Packets—IS-IS LSP packets sent or received
For more information about using event logs, see
the JUNOSe System Event Logging Reference Guide.
Monitoring IS-IS Parameters
You can monitor the IS-IS link-state database and
IS-IS debug information. Use the commands in this section to:
Display router information.
Display information about SPF calculations.
Monitor IS-IS summary address information.
Display debug information.
Display host.
Display information about MPLS tunnels.
Clear adjacencies.
Display paths to intermediate systems.
Display information about the settings for IS-IS graceful
restart.
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.
clear isis adjacency
Use to remove entries from the adjacency database.
Specify a hostname or the system ID of a neighbor to clear
only adjacencies with that neighbor.
Specify no options to remove all adjacencies from the
database.
Use to display the name-to-NSAP mappings defined with
the clns host command.
Field descriptions
Static Host Table
name—Name assigned to the host
ip address—Host IP address
type—Type of host
username—Username necessary to access the host
password—Password necessary to access the host
Clns Host Alias Table
name—Name of the host alias
area address—Area address of the host alias
system ID—Six-byte value of the host alias
type—Type of host alias
Example
host1:abc#show hosts
Static Host Table
-----------------
name ip address type username password
---- ---------- ---- --------- --------
jkk 10.10.0.73 ftp anonymous null
Clns Host Alias Table
---------------------
name area address system ID type
----- -------------------------------- ----------------- ------
fred 47.0005.80FF.F800.0000.0001.0001 0000.0000.0011.00 static
karen 47.0005.80FF.F800.0000.0001.0001 0000.0000.0012.00 static
Use to display a log of the last 20 IS-IS adjacency changes.
Field descriptions
When—Amount of time since recording the log entry
Neighbor ID—Identifier for the neighbor
IP Address—IP address of the neighbor
Interface—Interface from which neighbor was learned
Status—Adjacency status, Up or Down
Level—IS-IS routing level
Example
host1#show isis mpls adjacency-log
IS-IS MPLS TE log
When Neighbor ID IP Address Interface Status Level
02:25:47 2220.0900.2002.00 221.1.1.2 at2/0.1 Up L1
02:25:47 2220.0900.2002.00 221.1.6.2 at2/0.6 Up L1
02:25:47 2220.0900.4004.00 221.1.4.4 at2/1.5 Up L1
Use to display information about the configured and operational
settings on the router for IS-IS graceful restart, which is also known
as nonstop forwarding (NSF).
Field descriptions
Configured Timer Values—Displays the following values
configured for IS-IS graceful restart on the router, as described
in Configuring Graceful Restart:
Graceful Restart—Setting for IS-IS graceful restart
on the router: Enabled or Disabled
T3 Timer—Method by which the restarting router obtains
the T3 wait time: Manual or Derive from adjacency
T3 Timeout Value—Maximum time, in seconds, that
the restarting router waits before setting the overload bit to indicate
that IS-IS graceful restart has failed
T2 Timeout Value—Maximum time for IS-IS level 1
routing and level 2 routing, in seconds, that the restarting router
waits for the LSP database to synchronize
T1 Timeout Value—Time interval, in seconds, between
IS-IS restart requests sent by the restarting router on this interface
to neighboring routers
T1 Retry Count—Number of times the restarting router
resends unacknowledged restart requests on this interface at the specified
interval
Adj. Wait Time—Maximum time, in seconds, that an
IS-IS process on the restarting router waits for all interfaces with
IS-IS adjacencies to come up before completing the restart process
Operation Timer Values—Displays the following currently
remaining timer settings, in seconds, for IS-IS graceful restart during
the restart process:
T3 Timer—Remaining time before the restarting router
sets the overload bit to indicate that graceful restart has failed
T2 Timeout Value—Remaining time for level 1 routing
and level 2 routing that the restarting router waits for the LSP database
to synchronize
Adj. Wait Time—Remaining time that the restarting
router waits for all adjacencies to come up before completing the
restart process
Restart Ack Recv Adj Count—Number of neighboring
IS-IS routers for level 1 routing and level 2 routing that have acknowledged
the restart requests sent by the router
LAN If DIS Wait Count—Number of interfaces on which
the restarting router is waiting to receive election of the designated
intermediate system (DIS)
Restart CSNP Adj Recv Count—Number of adjacencies
for level 1 routing and level 2 routing that have sent complete sequence
number PDUs (CSNPs) to provide information about LSP database synchronization
Local LSP Wait Count—Number of level 1 and level
2 LSPs for which the restarting router is awaiting complete synchronization
Example
host1#show isis nsf
Configured Timer Values
-----------------------
Graceful Restart : Enabled
T3 Timer : Manual
T3 Timeout Value : 80
T2 Timeout Value : 70(level-1)
70(level-2)
T1 Timeout Value : 60
T1 Retry Count : 3
Adj. Wait Time : 30
Operation Timer Values
----------------------
T3 Timer : 0
T2 Timeout Value : 0(level-1)
0(level-2)
Adj. Wait Time : 0
Restart Ack Recv Adj Count : 0(level-1)
0(level-2)
LAN If DIS Wait Count : 0
Restart CSNP Adj Recv Count: 0(level-1)
0(level-2)
Local LSP Wait Count : 0(level-1)
0(level-2)
You can display the following information related
to the CLNS protocol:
CLNS information about interfaces
Information about router adjacencies
Information about ES and IS neighbors
Protocol-specific information for each routing process
Information about CLNS packets
Global CLNS configurations
You can set a statistics baseline for CLNS using
the baseline clns command.
baseline clns
Use to set a statistics baseline for CLNS.
The router implements the baseline by reading and storing
the statistics at the time the baseline is set and then subtracting
this baseline whenever baseline-relative statistics are retrieved.
Use the optional interface-specifier parameter to specify an interface; otherwise the command sets a
baseline for all interfaces.
You cannot set a baseline for groups of interfaces.
When baselining is requested, the time since the last
baseline was set is displayed in days, hours, minutes, and seconds.
Use the optional delta keyword
with the show clns traffic command to specify
that baselined statistics are to be shown.
Example
host1#show clns traffic detail
IS-IS: Baseline last set 0 days, 0 hours, 1 minutes, 41 seconds
IS-IS: Corrupted LSPs: 0
IS-IS: L1 LSP Database Overloads: 0
IS-IS: L2 LSP Database Overloads: 0
IS-IS: Area Addresses Dropped: 0
IS-IS: Attempts to Exceed Max Sequence: 0
IS-IS: Sequence Numbers Skipped: 6
IS-IS: Own LSPs Purged: 1
IS-IS: System ID Length Mismatches: 0
IS-IS: Maximum Area Mismatches: 0
Interface: atm2/1.3
IS-IS: Baseline last set 0 days, 0 hours, 1 minutes, 43 seconds
IS-IS: Protocol PDUs (in/out): 32/36
IS-IS: Init Failures: 0
IS-IS: Adjacencies Changes: 1
IS-IS: Adjacencies Rejected: 0
IS-IS: Bad LSPs: 0
IS-IS: Level-1 Designated IS Changes: 0
IS-IS: Level-2 Designated IS Changes: 0
IS-IS: Invalid 9542s: 0
host1#baseline clns atm 2/1.3
host1#show clns traffic detail delta
IS-IS: Baseline last set 0 days, 0 hours, 2 minutes, 27 seconds
IS-IS: Corrupted LSPs: 0
IS-IS: L1 LSP Database Overloads: 0
IS-IS: L2 LSP Database Overloads: 0
IS-IS: Area Addresses Dropped: 0
IS-IS: Attempts to Exceed Max Sequence: 0
IS-IS: Sequence Numbers Skipped: 6
IS-IS: Own LSPs Purged: 1
IS-IS: System ID Length Mismatches: 0
IS-IS: Maximum Area Mismatches: 0
Use to display global CLNS information about the router.
Field descriptions
Interfaces Enabled for CLNS—Number of interfaces
that have the CLNS routing protocol enabled
Configuration Timer—Interval (in seconds) after
which the router sends out IS hello packets
Default Holding Timer—Length of time (in seconds)
that hello packets are remembered
Packet Lifetime—Default value used in packets sourced
by this router
Intermediate system operation enabled (forwarding allowed)—Indicates
whether this router is configured to be an ES or an IS
IS-IS Level-1-2 Router—Shows whether IS-IS is running
in this router, gives tag information, and shows whether it is running
level 1 or level 1-2
Routing for Area—ISO (NSAP) address for the network
Distribute domain wide enabled—Indicates whether
distribute-domain-wide is enabled
Area Authentication—Displays the following fields
if area authentication is enabled:
PSNP/CSNP PDU authentication enabled—Indicates whether
authentication of level 1 PSNP packets and/or level 1 CSNP packets
has been enabled by means of the area-authentication command
Key-id—Numeric identifier for the authentication
key
Type—Type of authentication: hmac-md5 or password;
an asterisk after the type indicates that the key is active
Start Accept—Date and time that the router starts
accepting packets created with this password
Start Generate—Date and time that the router starts
inserting this password into packets
Stop Accept—Date and time that the router stops
accepting packets created with this password
Stop Generate—Date and time that the router stops
inserting this password into packets
Domain Authentication—Displays the following fields
if domain authentication is enabled:
PSNP/CSNP PDU authentication enabled—Indicates whether
authentication of level 2 PSNP packets and/or level 1 CSNP packets
has been enabled by means of the domain-authentication command
Key-id—Numeric identifier for the authentication
key
Type—Type of authentication: hmac-md5 or password;
an asterisk after the type indicates that the key is active
Start Accept—Date and time that the router starts
accepting packets created with this password
Start Generate—Date and time that the router starts
inserting this password into packets
Stop Accept—Date and time that the router stops
accepting packets created with this password
Stop Generate—Date and time that the router stops
inserting this password into packets
Use the es-neighbors keyword
to display information for IS-IS end-system adjacencies or the is-neighbors keyword to display information for IS-IS
intermediate-system adjacencies. Neighbor entries are sorted according
to the area in which they are located. The following fields are displayed
when any of these keywords is used:
System Id—Six-byte value of router
Interface—Interface on which the router was discovered
State—Adjacency state, either Up or Init
Up—Believes that the ES or IS is reachable
Init—Router is an IS and is waiting for an IS-IS
hello message. IS-IS regards the neighbor as not adjacent.
Type—Level 1, level 2, and level 1-2 type adjacencies
L1—Router adjacency for level 1 routing only
L1L2—Router adjacency for level 1 and level 2 routing
L2—Router adjacency for level 2 only
Priority—IS-IS priority that the respective neighbor
is advertising. The highest-priority neighbor becomes the designated
IS-IS router for the interface.
Circuit Id—Neighbor’s idea of what the designated
IS-IS router is for the interface
Add the detail keyword to display
area addresses and IP addresses.
host1:2#show clns
Global CLNS Information:
3 Interfaces Enabled for CLNS
NET: 49.0001.0040.0400.4002.00
Configuration Timer: 10, Default Holding Timer: 30, Packet Lifetime: 30
Intermediate system operation enabled
IS-IS level-1-2 Router:
Routing for Area: 49.0001
Ip route-type both
Example 3—For IS-IS adjacencies
host1#show clns is-neighbors
System Id Interface State Type Priority Circuit Id
0000.0000.7500 atm2/0.111 up L1L2 127 0000.0000.0000.00
Example 4—For detailed information on IS-IS adjacencies
host1#show clns is-neighbors detail
System Id Interface State Type Priority Circuit Id
0000.0000.7500 atm2/0.111 up L1L2 127 0000.0000.0000.00
Area Address(es): 47.0005.80FF.F800.0000.0001.0001
Ip Address(es): 172.30.245.33
Use to display CLNS-specific information about each interface.
Field descriptions
interface—Status of interface
line protocol—Status of the line protocol, up or
down
Checksums—Status of checksum, enabled or disabled
MTU—Maximum transmission size for a packet on this
interface
Encapsulation—Encapsulation used by CLNP packets
on this interface
Next ESH/ISH—When the next ES hello or IS hello
is sent on this interface
Routing Protocol—One or more areas that this interface
is in. In most cases, an interface is in only one area.
Circuit type—Whether the interface has been configured
for local routing (level-1), area routing (level-2), or local and
area routing (level-1-2)
Interface number—Number of the interface
local circuit ID—Local circuit ID of the interface
Authentication Level-1—If area authentication is
enabled, lists key-id, type of authentication, start and stop accept
times, and start and stop generate times for the key. An asterisk
after the type indicates the key is active.
Authentication Level-2—If domain authentication
is enabled, lists key-id, type of authentication, start and stop accept
times, and start and stop generate times for the key. An asterisk
after the type indicates the key is active.
Level 1 and level 2 metrics—Metric value for each
level
DIS priority—DIS priority value assigned to the
IS-IS router at each level
Priority—Priority value assigned to the IS-IS router
at each level
Circuit ID—Circuit ID of the IS-IS router at each
level
Number of active level 1 and level 2 adjacencies—Number
of adjacencies active at each level
Designated IS—Name of the designated IS-IS router
at each level
Next IS-IS LAN level Hello—Amount of time (in seconds)
before the next IS-IS LAN level 1 or level 2 hello message occurs
BFD—State of BFD for IS-IS, enabled or disabled
Mesh Group—Status of the mesh group, Active or Inactive
LDP-IGP Synchronization—Status of synchronization,
Achieved or Pending; supported only for OSPFv2
When you specify the brief keyword,
the output includes the following fields.
interface—Name of the interface
state—State of the interface, up or down
level—Configured interface level, level-1, level-2,
or level-1-2
DIS(L-1)—Level-1 designated intermediate system
(DIS) in a multiaccess network
DIS(L-2)—Level-2 designated intermediate system
(DIS) in a multiaccess network
l1/l2 Metric—Metric for the interface
Example 1
host1#show clns interface
FastEthernet4/1 is up, line protocol is up
Checksums Enabled, MTU 1500, Encapsulation SNAP
Next ESH/ISH is 5 seconds
Routing Protocol: IS-IS
Circuit Type: level-1-2
Interface number 0x10, local circuit ID 0x1
Level-1 Metric: 10, DIS Priority: 0, Priority: 64,
Circuit ID: 0000.0000.0000.01
Designated IS: Getafix:v2.01 (us)
Number of active level-1 adjacencies: 0
Level-2 Metric: 10, DIS Priority: 0, Priority: 64,
Circuit ID: 0000.0000.0000.01
Designated IS: Getafix:v1.01 (Not Us)
Number of active level-2 adjacencies: 1
Next IS-IS LAN Level-1 Hello in 7 seconds
Next IS-IS LAN Level-2 Hello in 6 seconds
BFD disabled
Mesh Group Inactive
LDP is configured through LDP autoconfig
LDP-IGP Synchronization: Achieved
Example 2
host1#show clns interface brief
Clns Intf brief Table
--------------------
l1/l2
interface state level DIS(L-1) DIS(L-2) Metric
------------- ----- --------- ------------- -------------- ------
loopback1 up level-1-2 Point to Point Point to Point 10/10
ATM3/1.1 up level-1-2 Point to Point Point to Point 10/10
FastEthernet1/1 up level-1-2 nemo:2.03 nemo:2.03 10/10
3 interfaces up in 3 interfaces
Use to display information about ES and IS neighbors.
Use the detail keyword to display
area addresses, IP addresses, and the ES or IS neighbor’s graceful
restart capability and restarting state.
Field descriptions
System Id—Six-byte value of router
SNPA—Subnetwork point of attachment, which is the
data link address; not meaningful for a point-to-point circuit
Interface—Interface the router was learned from
State—State of the ES or IS
Init—Router is an IS and is waiting for an IS-IS
hello message. IS-IS regards the neighbor as not adjacent.
Up—ES or IS is considered reachable
Holdtime(rem)—Remaining number of seconds before
this adjacency entry times out
Type—One of the following adjacency types:
ES—End-system adjacency either discovered by means
of the ES-IS protocol or statically configured
IS—Router adjacency either discovered by means of
the ES-IS protocol or statically configured
L1—Router adjacency for level 1 routing only
L1L2—Router adjacency for level 1 and level 2 routing
L2—Router adjacency for level 2 only
Proto—Protocol through which the adjacency was learned.
Valid protocol sources include ES-IS, IS-IS, and Static.
Area Address(es)—Area addresses of the ES or IS
Ip Address(es)—IP addresses of the ES or IS
Graceful Restart Capable—Whether graceful restart
is enabled (yes) or disabled (no) on the ES or IS
Neighbor Restarting—Whether the ES or IS is currently
restarting: yes or no
BFD session—State of any BFD session for this neighbor
Example 1—For IS-IS IP configuration
host1#show clns neighbors detail
System Id SNPA Interface State Holdtime(rem) Type Proto
1111.1111.1111 A5/0.1 up 30(29) L1L2 IS-IS
Area Address(es): 11.1111.1111.1111.1111.1111.1111
Ip Address(es): 172.100.11.1
Graceful Restart Capable: yes
Neighbor Restarting: yes
BFD session is not-up
Example 2—For IS-IS IPv6 configuration
host1:2#show clns neighbors detail
System Id SNPA Interface State Holdtime(rem) Type Proto
host1:1 0090.1A41.081A F1/1 up 30(25) L1 IS-IS
Area Address(es): 49.0001
Ip Address(es): 4.4.4.1
Graceful Restart Capable: no
Neighbor Restarting: no
host1:3 0090.1A41.081C F1/1 up 30(27) L1 IS-IS
Area Address(es): 49.0001
Ip Address(es): 4.4.4.3
Graceful Restart Capable: no
Neighbor Restarting: no
Use the optional delta keyword
to specify that baselined statistics are to be shown.
Field descriptions
IS-IS: Baseline last set—Time since the baseline
was set
IS-IS: Corrupted LSPs—Number of LSPs received with
errors
IS-IS: L1 LSP Database Overloads—Number of overloads
in level 1
IS-IS: L2 LSP Database Overloads—Number of overloads
in level 2
IS-IS: Area Addresses Dropped—Number of area addresses
that the router dropped
IS-IS: Attempts to Exceed Max Sequence—Number of
sequence wraps over maximum
IS-IS: Sequence Numbers Skipped—Number of LSPs received
out of order
IS-IS: Own LSPs Purged—Number of LSPs deleted
IS-IS: Other LSPs Purged—Number of received LSPs
deleted
IS-IS: System ID Length Mismatches—Number of unmatched
system ID lengths
IS-IS: Maximum Area Mismatches—Number of rejected
hellos due to area mismatches
IS-IS: Area/Domain Authentication Failures—Number
of authentication failures on received level 1 and level 2 LSP/SNPs
IS-IS: Level-1 LSPs Sent Rcvd Dropped—Number of
level 1 LSPs sent, received, and dropped
IS-IS: Level-2 LSPs Sent Rcvd Dropped—Number of
level 2 LSPs sent, received, and dropped
IS-IS: LSP checksum errors received—Number of LSP
checksum errors received
When you specify an interface, reports include the following
additional fields:
Interface—IS-IS interface for which details are
displayed
IS-IS: Protocol PDUs (in/out)—Number of packets
in/out on interface
IS-IS: Init Failures—Number of rejected hellos on
interface
IS-IS: Adjacencies Changes—Number of times adjacencies
have transitioned from down to up
IS-IS: Adjacencies Rejected—Number of times hellos
are rejected because of an incompatibility
IS-IS: Bad LSPs—Number of LSPs received with errors
IS-IS: Level-1 Designated IS Changes—Number of times
the level 1 designated router has changed
IS-IS: Level-2 Designated IS Changes—Number of times
the level 2 designated router has changed
IS-IS: Invalid 9542s—Number of rejected ES hello
packets
IS-IS: Malformed PDUs received—Number of malformed
packets received
IS-IS: Authentication Failures—Number of authentication
failures on received level 1 and level 2 hello packets
When you specify the detail keyword, the output includes the following additional fields that
show packet statistics and LSP statistics. The hello, CSNP, and PSNP
statistics are shown only when you issue the detail keyword. When the interface is Ethernet, L1 and L2 hello counts
are displayed; otherwise the point-to-point hello count is displayed.
IS-IS: Level-1 Hellos (in/out/dropped)—Number of
level 1 hellos received, sent, and dropped
IS-IS: Level-2 Hellos (in/out/dropped)—Number of
level 2 hellos received, sent, and dropped
IS-IS: Level-1 CSNPs (in/out)—Number of level 1
CSNPs received and sent on the interface
IS-IS: Level-2 CSNPs (in/out)—Number of level 2
CSNPs received and sent on the interface
IS-IS: Level-1 PSNPs (in/out)—Number of level 1
PSNPs received and sent on the interface
IS-IS: Level-2 PSNPs (in/out)—Number of level 2
PSNPs received and sent on the interface
IS-IS: LSP Retransmissions—Number of LSPs retransmitted
on the interface
Example 1
host1#show clns traffic
IS-IS: Baseline last set 0 days, 21 hours, 12 minutes, 15 seconds
IS-IS: Corrupted LSPs: 0
IS-IS: L1 LSP Database Overloads: 0
IS-IS: L2 LSP Database Overloads: 0
IS-IS: Area Addresses Dropped: 0
IS-IS: Attempts to Exceed Max Sequence: 0
IS-IS: Sequence Numbers Skipped: 5
IS-IS: Own LSPs Purged: 0
IS-IS: Other LSPs Purged: 0
IS-IS: System ID Length Mismatches: 0
IS-IS: Maximum Area Mismatches: 0
IS-IS: Area/Domain Authentication Failures: 0
IS-IS: Level-1 LSPs Sent: 1 Rcvd: 6769 Dropped: 6769
IS-IS: Level-2 LSPs Sent: 1 Rcvd: 6769 Dropped: 6769
IS-IS: LSP checksum errors received: 0
