Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

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show isis neighbors

Display information about neighboring (adjacent) routers.

Syntax

show isis neighbors [level-1 | level-2] [detail] [ interface]

Parameters

level-1	(OPTIONAL) Displays information about Level 1 IS-IS neighbors.
level-2	(OPTIONAL) Displays information about Level 2 IS-IS neighbors.
detail	(OPTIONAL) Displays detailed information about neighbors.
interface	(OPTIONAL) Enter the following keywords and slot/port or number information: For a Port Channel interface, enter the keywords `port-channel` then a number. The range is from 1 to 128. For a 10-Gigabit Ethernet interface, enter the keyword `TenGigabitEthernet` then the slot/port information. For a VLAN, enter the keyword `vlan` then a number from 1 to 4094.

Command Modes

EXEC
EXEC Privilege

Supported Modes

Full–Switch

Command History

Version	Description
9.9(0.0)	Introduced on the FN IOM.
9.2(0.0)	Introduced on the MXL 10/40GbE Switch IO Module.

Usage Information

Use this command to confirm that the neighbor adjacencies are operating correctly. If you suspect that they are not, you can verify the specified 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 identifies 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.

Dell#show isis neighbors
                                             System Id Interface State Type Priority Uptime Circuit Id
                                             TEST Gi 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 Gi 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#