Users Guide

Version Description
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.11.1 Introduced on the Z9000.
Usage Information
Use this command to conrm that the neighbor adjacencies are operating correctly. If you suspect that they
are not, you can verify the specied area addresses of the routers by using the show isis neighbors
command.
The following describes the show isis neighbors command shown in the following example.
Field Description
System Id The value that identies a system in an area.
Interface The interface, slot, and port in which the router was discovered.
State The value providing status about the adjacency state. The range is Up and Init.
Type This value displays the adjacency type (Layer 2, Layer 2 or both).
Priority IS-IS priority the neighbor advertises. The neighbor with highest priority becomes
the designated router for the interface.
Uptime Displays the interfaces uptime.
Circuit Id The neighbor’s interpretation of the designated router for the interface.
Example
The bold sections below identify that Multi-Topology IS-IS is enabled. This command displays only one IP
address per line.
Dell#show isis neighbors
System Id Interface State Type Priority Uptime Circuit Id
TEST Te 7/1 Up L1L2
(M) 127 09:28:01 TEST.02
!
Dell#show isis neighbors detail
System Id Interface State Type Priority Uptime Circuit Id
TEST Te 7/1 Up L1L2
(M) 127 09:28:04 TEST.02 Area Address(es):
49.0000.0001
IP Address(es): 25.1.1.3*
MAC Address: 0000.0000.0000
Hold Time: 28
Link Local Address: fe80::201:e8ff:fe00:492c
Topology: IPv4 IPv6 , Common (IPv4 IPv6 )
Adjacency being used for MTs: IPv4 IPv6
Dell#
show isis protocol
Display IS-IS routing information.
S4820T
Syntax
show isis [vrf vrf-name] protocol
Intermediate System to Intermediate System (IS-IS)
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