Monitoring IS-IS

[Contents] [Prev] [Next] [Index] [Report an Error] [No Frames]

JUNOSe 9.1.x IP, IPv6, and IGP Configuration Guide > Configuring IS-IS > Monitoring IS-IS
Monitoring IS-IS

The CLI has commands available for monitoring IS-IS parameters and CLNS parameters.

System Event Logs

To troubleshoot and monitor IP, use the following system event logs:

isisAdjChange—IS-IS adjacency up or down events

isisAdjPackets—IS-IS adjacency hello packets

isisBfdEvents—IS-IS interactions with BFD

isisChecksumErr—IS-IS checksum errors

isisGeneral—IS-IS system notifications

isisHelloGeneral—IS-IS system notifications

isisHelloPackets—IS-IS hello packets

isisipv6Log—IS-IS IPv6 notifications

isisLdpEvents—IS-IS interactions with LDP

isisLocalUpdate—IS-IS local LSP packets

isisMplsTeAdvertisements—IS-IS MPLS traffic engineering advertisements

isisMplsTeEvents—IS-IS MPLS traffic engineering

isisNsfEvents—IS-IS nonstop forwarding events during warm starts

isisProtocolErr—IS-IS protocol errors

isisSnpPackets—IS-IS complete sequence numbers PDU (CSNP) and partial sequence numbers PDU (PSNP) packets

isisSpfEvents—IS-IS Shortest Path First (SPF)

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, Chapter 2, Command-Line Interface, 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.

Example
host1#clear isis adjacency 
There is no no version.
debug isis

Use to obtain debug-related information about certain parameters.

This command manipulates the same log as the Global Configuration log commands.

You can select from these parameters:

adj-packets—IS-IS adjacency-related packets

mpls traffic-eng advertisements—MPLS traffic-engineering agent advertisements

mpls traffic-eng agents—MPLS traffic-engineering agents

snp-packets—IS-IS CSNP/PSNP packets

spf-events —IS-IS Shortest Path First events

spf-statistics—IS-IS SPF timing and statistic data

spf-triggers—IS-IS SPF triggering events

update-packets—IS-IS update-related packets
Example
host1#debug isis adj-packets
Use the no version to disable debugging display.
show hosts

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
show isis database

Use to display IS-IS link-state database information.

Request specific show isis database statistics by selecting from these options:

lspid—Link-state protocol ID in form xxxx.xxxx.xxxx.yy-zz

hostname—Link-state database information for the specified hostname

detail—Detailed link-state database information; if this option is not specified, a summary display is provided

l1—Level 1 routing link-state database

l2 —Level 2 routing link-state database

level-1—Level 1 routing link-state database

level-2—Level 2 routing link-state database

Each option can be entered in an arbitrary string within a single command entry.

Field descriptions

LSPID—LSP identifier

LSP Seq Num—Sequence number for the LSP. Enables other routers to determine if they have received the latest information from source.

LSP Checksum—Checksum of the LSP packet

LSP Holdtime—Number of seconds that the LSP remains valid

ATT—Attach bit; indicates that the router is a level 2 router and can reach other areas

P—P bit; detects whether intermediate system is capable of area partition repair

OL—Overload bit; determines whether intermediate system is congested

Area Address—Area addresses that can be reached from the router

NLPID—ISO network layer protocol identifier

IP Address—IP address of the interface

Hostname—Hostname of the router

Router ID—ID configured on the router

Metric —Metric that indicates either of the following costs:

Cost of adjacency between the originating router and the advertised neighbor

Cost between the advertising router and the advertised destination

IPv4 Interface Address—Address of the interface

IPv4 Neighbor Address—Address of a neighbor

Maximum link bandwidth—Bandwidth capacity of the link in bits per second

Reservable link bandwidth—Amount of bandwidth reservable on the link (whether reserved or not)

Unreserved bandwidth—Amount of bandwidth available for reservation on the link

TE default metric—Traffic engineering default metric value

Tag value(s)—Route tag assigned to the IS-IS interface, if configured
Example 1
host1#show isis database
IS-IS Level-1 Link State Database
LSPID LSP        Seq Num         LSP Checksum LSP Holdtime ATT/P/OL
0000.0000.004E.00-00  0x000013F5   0x8BAA     1198                     0/0/0
0000.0000.3333.00-00* 0x0000020F   0xEA1E     1199             0/0/0
0000.0000.3333.02-00  0x00000007   0x8C30     1199             0/0/0
0000.0000.7500.00-00  0x0000308D   0x5EDF     1198                     0/0/0
0090.1A00.B000.00-00  0x00000011   0xB082     1195             1/0/0
0090.1A00.C000.00-00  0x0000005F   0x9860     1196             0/0/0
IS-IS Level-2 Link State Database
LSPID LSP        Seq Num         LSP Checksum LSP Holdtime ATT/P/OL
0000.0000.004E.00-00  0x00001355   0x0DA7     1198         0/0/0
0000.0000.3333.00-00* 0x00000257   0x566B     1199         0/0/0
0000.0000.3333.02-00  0x00000007   0x8C30     1199         0/0/0
0000.0000.7500.00-00  0x00003315   0x3627     1198         0/0/0
0010.7B36.5FF7.00-00  0x00000BAF   0x187A     1183         0/0/0
0090.1A00.B000.00-00  0x00000016   0xD624     1195         1/0/0
0090.1A00.C000.00-00  0x00000071   0x9358     1196        0/0/0
Example 2
host1#show isis database detail
LSPID LSP        Seq Num         LSP Checksum LSP Holdtime ATT/P/OL
boston.00-00*    0x00000116    0x4760     655    1/0/0
  Area Address: 47.0005.80FF.F800.0000.0000.0004
  NLPID:       0x81 0xcc
  IP Address:  10.1.1.1
  Hostname: boston
  Router ID:  10.1.1.1
  Metric: 10 IS newyork.00
    IPv4 Interface Address:  10.1.1.1
    IPv4 Neighbor Address:   10.1.1.2
  Metric: 10 IS washington.00
    IPv4 Interface Address:  10.1.3.1
    IPv4 Neighbor Address:   10.1.3.3
  Metric: 10 IP 192.168.1.0/24
  Metric: 10 IP 10.1.1.0/24  tag value(s):   11
  Metric: 10 IP 10.1.3.0/24
  Metric: 20 IP 10.1.2.0/24  tag value(s):   22
Example 3
host1#show isis database verbose
IS-IS Level-1 Link State Database
LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime  ATT/P/OL
zion.00-00*           0x00000011   0xBFAD        487           0/0/0
  Area Address: 47.0005.80FF.F800.0000.0000.0003
  NLPID:       0x81 0xcc
  IP Address:  222.9.1.1
  Hostname: zion
  Router ID:  222.9.1.1
  Metric: 0  ES 2220.0900.1001
  Metric: 10 IS london.00
        Administrative group:  0
        IPv4 Interface Address:  221.1.1.1
        IPv4 Neighbor Address:   221.1.1.2
        Maximum link bandwidth:  50000
        Reservable link bandwidth:  50000
        Unreserved bandwidth:
          Priority 0:  50000
          Priority 1:  50000
          Priority 2:  50000
          Priority 3:  50000
          Priority 4:  30000
          Priority 5:  30000
          Priority 6:  30000
          Priority 7:  30000
        TE default metric:  0
  Metric: 10 IS london.00
        Administrative group:  0
        IPv4 Interface Address:  221.1.6.1
        IPv4 Neighbor Address:   221.1.6.2
        Maximum link bandwidth:  50000
        Reservable link bandwidth:  50000
        Unreserved bandwidth:
          Priority 0:  50000
          Priority 1:  50000
          Priority 2:  50000
          Priority 3:  50000
          Priority 4:  30000
          Priority 5:  30000
          Priority 6:  30000
          Priority 7:  30000
        TE default metric:  0
  Metric: 10 IS paris.00
        Administrative group:  0
        IPv4 Interface Address:  221.1.4.1
        IPv4 Neighbor Address:   221.1.4.4
        Maximum link bandwidth:  0
        Reservable link bandwidth:  0
        Unreserved bandwidth:
          Priority 0:  0
          Priority 1:  0
          Priority 2:  0
          Priority 3:  0
          Priority 4:  0
          Priority 5:  0
          Priority 6:  0
          Priority 7:  0
        TE default metric:  0
  Metric: 10 IP 221.1.1.0/24
  Metric: 10 IP 221.1.6.0/24
  Metric: 10 IP 221.1.4.0/24
  Metric: 0 IP 222.9.1.1/32
Example 4
host1#show isis database Getafix:v2
IS-IS Level-1 Link State Database
LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime  ATT/P/OL
Getafix:v2.00-00*     0x00000001   0xEB53        1097          0/0/0
IS-IS Level-2 Link State Database
LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime  ATT/P/OL
Getafix:v2.00-00*     0x00000001   0x456D        1097          0/0/0 
Example 5
host1#show isis database Getafix:v2 detail
IS-IS Level-1 Link State Database
LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime  ATT/P/OL
Getafix:v2.00-00*     0x00000001   0xEB53        967           0/0/0
  Area Address: 22
  NLPID:       0x81 0xcc
  IP Address:  1.1.1.2
  Hostname: Getafix:v2
  Metric: 10 IS Getafix:v2.01
  Metric: 0  ES Getafix:v2
  Metric: 10 IP 1.1.1.0 255.255.255.0
IS-IS Level-2 Link State Database
LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime  ATT/P/OL
Getafix:v2.00-00*     0x00000001   0x456D        967           0/0/0
  Area Address: 22
  NLPID:       0x81 0xcc
  IP Address:  1.1.1.2
  Hostname: Getafix:v2
  Metric: 10 IS Getafix:v2.01
  Metric: 10 IP 1.1.1.0 255.255.255.0
Example 6—For IS-IS IPv6 configuration
host1:2#show isis database detail
IS-IS Level-1 Link State Database
LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime  ATT/P/OL
host1:1.00-00          0x00000005   0x0E39        930           0/0/0
  Area Address: 49.0001
  NLPID:       0x81 0xcc
  IP Address:  4.4.4.1
  Hostname: host1:1
  Metric: 0  ES host1:1
  Metric: 10 IS host1:2.00
  Metric: 10 IS host1:2.00
  Metric: 10 IP 4.4.4.0/24
  Metric: 10 IP 20.0.0.0/24
  Metric: 10 IPv6 Internal Up 1:1:1:101::/64
host1:2.00-00*         0x00000004   0xC558        735           0/0/0
  Area Address: 49.0001
  NLPID:       0x81 0xcc
  IP Address:  9.9.9.9
  Hostname: host1:2
  Metric: 0  ES host1:2
  Metric: 10 IS host1:1.00
  Metric: 10 IS host1:3.00
  Metric: 10 IS host1:1.00
  Metric: 10 IS host1:3.00
  Metric: 10 IP 4.4.4.0/24
  Metric: 10 IP 20.0.0.0/24
  Metric: 10 IP 40.0.0.0/24
  Metric: 10 IP 30.0.0.0/24
  Metric: 10 IPv6 Internal Up 1:1:1:102::/64
show isis mpls adjacency-log

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
show isis mpls advertisements

Use to display the last record flooded from MPLS.

Field descriptions

System ID—Name or system ID of the MPLS tail-end (destination) router

Router ID—Router ID for the router

Link Count—Number of links that MPLS advertises

Neighbor System ID—Identifier of the remote system in an area

Administrative group—TLV administrative group or color assigned to the link

Interface IP address—IP address of the interface

Neighbor IP Address—IP address of the neighbor

Maximum link bandwidth—Bandwidth capacity of the link in bits per second

Reservable link bandwidth—Amount of bandwidth reservable on the link (whether reserved or not)

Unreserved bandwidth—Amount of bandwidth available for reservation on the link

TE default metric—Traffic engineering default metric value

Affinity Bits—Attributes flooded for the link
Example
host1#show isis mpls advertisements
System ID: zion.00
  Router ID:  222.9.1.1
    Link[1]
      Neighbor System ID: london.00
        Administrative group:  0
        IPv4 Interface Address:  221.1.1.1
        IPv4 Neighbor Address:   221.1.1.2
        Maximum link bandwidth:  50000
        Reservable link bandwidth:  50000
        Unreserved bandwidth:
          Priority 0:  50000
          Priority 1:  50000
          Priority 2:  50000
          Priority 3:  50000
          Priority 4:  30000
          Priority 5:  30000
          Priority 6:  30000
          Priority 7:  30000
        TE default metric:  0
    Link[2]
      Neighbor System ID: london.00
        Administrative group:  0
        IPv4 Interface Address:  221.1.6.1
        IPv4 Neighbor Address:   221.1.6.2
        Maximum link bandwidth:  50000
        Reservable link bandwidth:  50000
        Unreserved bandwidth:
          Priority 0:  50000
          Priority 1:  50000
          Priority 2:  50000
          Priority 3:  50000
          Priority 4:  30000
          Priority 5:  30000
          Priority 6:  30000
          Priority 7:  30000
        TE default metric:  0
    Link[3]
      Neighbor System ID: paris.00
        Administrative group:  0
        IPv4 Interface Address:  221.1.4.1
        IPv4 Neighbor Address:   221.1.4.4
        Maximum link bandwidth:  0
        Reservable link bandwidth:  0
        Unreserved bandwidth:
          Priority 0:  0
          Priority 1:  0
          Priority 2:  0
          Priority 3:  0
          Priority 4:  0
          Priority 5:  0
          Priority 6:  0
          Priority 7:  0
        TE default metric:  0
show isis mpls tunnel

Use to display information about tunnels used in the calculation of IS-IS next hops.

Field descriptions

System Id—Name or system ID of the MPLS tail-end (destination) router

Tunnel Name—Name of the MPLS tunnel interface

Nexthop—Destination IP address of the MPLS tunnel

Metric —Metric of the MPLS tunnel

Mode—Metric mode, either absolute or relative
Example
host1#show isis mpls tunnel
System Id         Tunnel Name   Nexthop    Metric    Mode
dakota-router1.00 Tunnel1       2.2.2.2    -3        Relative
                  Tunnel2       2.2.2.2    11        Absolute
jersey-router2.00 Tunnel3       3.3.3.3    -1        Relative
                  Tunnel4       3.3.3.3 
show isis nsf

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)
show isis spf-log

Use to display how often and why the router has run a full SPF calculation.

Field descriptions

When—Amount of time since a full SPF calculation took place, given in hours:minutes:seconds. The previous 20 calculations are logged.

Duration—Number of seconds to complete this SPF run. The elapsed time is in actual clock time, not CPU time.

First Trigger LSP—Whenever a full SPF calculation is triggered by a new LSP, the LSP ID is stored in the router

SpfType—Type of SPF run

Triggers—List of causes that triggered the SPF calculation
Example 1
host1#show isis spf-log 
Level 1 SPF log
When     Duration      First Trigger LSP    SpfType  Triggers
00:01:45 0.000         0000.0000.0000.00-00 Full     LSP Add
00:01:36 0.000         0000.0000.0000.00-00 Full     LSP Add
00:01:31 0.000         0000.0101.0101.00-00 Full     LSP Add
00:00:08 0.000         0000.0101.0101.00-00 PRC      LSP Sequence Update
Example 2
host1#show isis spf-log detail 
Level 1 SPF log
When     Duration      First Trigger LSP    SpfType  Triggers
00:01:53 0.000         0000.0000.0000.00-00 Full     LSP Add
  RTupdt 0.000
  RtLeak 0.000
00:01:44 0.000         0000.0000.0000.00-00 Full     LSP Add
  RTupdt 0.000
  RtLeak 0.000
00:01:39 0.000         0000.0101.0101.00-00 Full     LSP Add
  RTupdt 0.000
  RtLeak 0.000
00:00:16 0.000         0000.0101.0101.00-00 PRC      LSP Sequence Update
  RTupdt 0.000
  RtLeak 0.000
show isis summary-addresses

Use to display the status of IS-IS aggregate addresses.

Field descriptions

Address—Aggregate addresses advertised by summarization process

Mask—IP subnet masks used for the summary routes

Level—Level for which multiple groups of addresses can be summarized

Metric—Metric used to advertise the summary

State—State of the summary address

Prefix—IPv6 prefix

Tag—Number in the range 1–4294967295 that identifies the route tag assigned to the IS-IS IPv6 interface
Example 1—For IS-IS IP addresses
host1#show isis summary-addresses
Address       Mask         Level       Metric   State
--------      ----------   ---------   ------   -------
3.0.0.0       255.0.0.0    LEVEL-1     0        ENABLED
4.0.0.0       255.0.0.0    LEVEL-1-2   5        ENABLED
Example 2—For IS-IS IPv6 addresses
host1#show isis summary-addresses
Prefix         Level            Metric         Tag     State
------------   -------------    ----------     ------  -------
2008::0/8      LEVEL-2          0              100     ENABLED
show isis topology

Use to display the paths to all intermediate systems or specific types of intermediate systems.

Field descriptions

System ID—Name or system ID of the intermediate system

Metric—Metric of the path to the intermediate system

Next Hop—Destination IP address of the intermediate system

Interface—Interface from which neighbor was learned

SNPA—Subnetwork point of attachment; for a LAN circuit, it is the MAC address; not meaningful for a point-to-point circuit.
Example
host1#show isis topology level-1
              IS-IS paths for level-1 routers
              -------------------------------
  System-ID   Metric    Next Hop       Intf      SNPA
------------- ------   -------------  --------   ----
barcelona:vr2  10      barcelona:vr2  at2/0.12
undebug isis
Use to cancel the display of information about a selected event.

The same IS-IS variables can be designated as in the debug isis command.

Example
host1#undebug isis adj-packets
There is no no version.
Displaying CLNS

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
Interface: atm2/1.3
IS-IS: Baseline last set 0 days, 0 hours, 0 minutes, 8 seconds
IS-IS: Protocol PDUs (in/out): 2/1
IS-IS: Init Failures: 0
IS-IS: Adjacencies Changes: 0
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
There is no no version.
clear isis database

Use to delete all entries from the IS-IS link-state database, or only the entries associated with the specified neighbor.

Field descriptions

LSPID—LSP identifier

LSP Seq Num—Sequence number for the LSP. Enables other routers to determine if they have received the latest information from source.

LSP Checksum—Checksum of the LSP packet

LSP Holdtime—Number of seconds that the LSP remains valid

ATT—Attach bit; indicates that the router is a level 2 router and can reach other areas

P—P bit; detects whether intermediate system is capable of area partition repair

OL—Overload bit; determines whether intermediate system is congested
Example
host1#show isis database
IS-IS Level-1 Link State Database
LSPID          LSP Seq Num  LSP Checksum  LSP Holdtime  ATT/P/OL
rtr1.00-00*    0x00000009   0x568F        1188          0/0/0
rtrtwo.00-00   0x00000005   0xEC9B        444           0/0/0
IS-IS Level-2 Link State Database
LSPID          LSP Seq Num  LSP Checksum  LSP Holdtime  ATT/P/OL
rtr1.00-00*    0x00000010   0xF630        1193          0/0/0
rtrtwo.00-00   0x0000000C   0xF8DA        1188          0/0/0
host1#clear isis database
host1#show isis database
IS-IS Level-1 Link State Database
LSPID          LSP Seq Num  LSP Checksum  LSP Holdtime  ATT/P/OL
IS-IS Level-2 Link State Database
LSPID          LSP Seq Num  LSP Checksum  LSP Holdtime  ATT/P/OL
There is no no version.
show clns

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.

Example 1—For IS-IS IP configuration
host1#show clns
Global CLNS Information:
  3 Interfaces Enabled for CLNS
  NET: 47.0005.80FF.F800.0000.0001.0001.0000.0000.3333.00
  Configuration Timer: 10, Default Holding Timer: 30, Packet Lifetime: 1200
  Intermediate system operation enabled
  IS-IS level-1-2 Router: testnet
    Routing for Area: 47.0005.80FF.F800.0000.0001.0001
  Distribution domain wide enabled
  Area Authentication:
  PSNP PDU authentication enabled 
    Key-id:   1 Type: hmac-md5
      Start Accept:   FRI JAN 14 09:57:41 2000
      Start Generate: FRI JAN 14 09:59:41 2000
      Stop Accept:    0
      Stop Generate:  0
  Domain Authentication:
  PSNP PDU authentication enabled 
  CSNP PDU authentication enabled 
    Key-id:   1 Type: hmac-md5*
      Start Accept:   WED JAN 12 19:01:52 2000
      Start Generate: WED JAN 12 19:03:52 2000
      Stop Accept:    0
      Stop Generate:  0
Example 2—For IS-IS IPv6 configuration
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
show clns interface

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
show clns neighbors

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
show clns protocol

Use to display protocol-specific information about a routing process.

Field descriptions

IS-IS Router—IS-IS router name

System ID—Six-byte value of router

IS-Type—Routing level (level 1, level 2, or both) that is enabled on the router

Manual area addresses—Configured area addresses

Routing for area address(es)—Identified for level 1 routing processes. For level 2 routing processes, lists the domain address.

Interfaces supported by IS-IS—Interfaces and type

Distance—Configured distance value

Redistributing—Protocols being redistributed into IS-IS
Example
host1:2#show clns protocol
IS-IS Router:
  System Id: 0040.0400.4002.00  IS-Type: level-1-2
  Operational State: Up
  Manual area address(es):
        49.0001
  Routing for area address(es):
        49.0001
  Interfaces supported by IS-IS:
        loopback1 - IP
        FastEthernet1/1 - IP,IPv6
        ATM3/1.1 - IP, IPv6
  Distance: 115
  Redistributing:
        static
show clns traffic

Use to display all CLNS packets the router sees.

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
Example 2
host1#show clns traffic fastEthernet 4/0 detail
Interface: FastEthernet4/0
IS-IS: Baseline last set 5 days, 0 hours, 3 minutes, 31 seconds
IS-IS: Protocol PDUs (in/out): 10421/5862
IS-IS: Level-1 Hellos (in/out/dropped): 610046/610456/0
IS-IS: Level-2 Hellos (in/out/dropped): 610046/610456/0
IS-IS: Level-1 CSNPs (in/out): 0/0
IS-IS: Level-2 CSNPs (in/out): 0/0
IS-IS: Level-1 PSNPs (in/out): 0/0
IS-IS: Level-2 PSNPs (in/out): 0/0
IS-IS: Init Failures: 0
IS-IS: Adjacencies Changes: 1
IS-IS: Adjacencies Rejected: 0
IS-IS: Bad LSPs: 0
IS-IS: LSP Retransmissions: 0
IS-IS: Level-1 Designated IS Changes: 1
IS-IS: Level-2 Designated IS Changes: 1
IS-IS: Invalid 9542s: 0
IS-IS: Malformed PDU received: 0
IS-IS: Authentication Failures: 0
Example 3
host1#show clns traffic detail
IS-IS: Baseline last set 5 days, 0 hours, 3 minutes, 31 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: 0
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
Interface: FastEthernet4/0
IS-IS: Baseline last set 5 days, 0 hours, 3 minutes, 31 seconds
IS-IS: Protocol PDUs (in/out): 10421/5862
IS-IS: Level-1 Hellos (in/out/dropped): 610046/610456/0
IS-IS: Level-2 Hellos (in/out/dropped): 610046/610456/0
IS-IS: Level-1 CSNPs (in/out): 0/0
IS-IS: Level-2 CSNPs                 (in/out): 0/0
IS-IS: Level-1 PSNPs                 (in/out):    0/0
IS-IS: Level-2 PSNPs                 (in/out):    0/0
IS-IS: Init Failures: 0
IS-IS: Adjacencies Changes: 1
IS-IS: Adjacencies Rejected: 0
IS-IS: Bad LSPs: 0
IS-IS: LSP Retransmissions: 0
IS-IS: Level-1 Designated IS Changes: 1
IS-IS: Level-2 Designated IS Changes: 1
IS-IS: Invalid 9542s: 0
IS-IS: Malformed PDU received: 0
IS-IS: Authentication Failures: 0
Interface: FastEthernet4/1
IS-IS: Baseline last set 5 days, 0 hours, 3 minutes, 31 seconds
IS-IS: Protocol PDUs (in/out): 10421/5862
IS-IS: Level-1 Hellos (in/out/dropped): 609946/610056/0
IS-IS: Level-2 Hellos (in/out/dropped): 609946/610056/0
IS-IS: Level-1 CSNPs (in/out): 0/0
IS-IS: Level-2 CSNPs                 (in/out): 0/0
IS-IS: Level-1 PSNPs                 (in/out):    0/0
IS-IS: Level-2 PSNPs                 (in/out):    0/0
IS-IS: Init Failures: 0
IS-IS: Adjacencies Changes: 1
IS-IS: Adjacencies Rejected: 0
IS-IS: Bad LSPs: 0
IS-IS: LSP Retransmissions: 0
IS-IS: Level-1 Designated IS Changes: 1
IS-IS: Level-2 Designated IS Changes: 1
IS-IS: Invalid 9542s: 0
IS-IS: Malformed PDU received: 0
IS-IS: Authentication Failures: 0

[Contents] [Prev] [Next] [Index] [Report an Error] [No Frames]