display isis peer

Function

The display isis peer command displays IS-IS peer.

Format

display isis process-id peer [ verbose ]

display isis peer [ verbose ] [ process-id | vpn-instance vpn-instance-name ]

display isis peer interface interface-type interface-number [ verbose ]

Parameters

Parameter	Description	Value
process-id	Specifies the ID of an IS-IS process.	The value is an integer ranging from 1 to 65535. By default, information about all IS-IS neighbors in all IS-IS processes is displayed.
verbose	Displays detailed information about an IS-IS neighbor, including its area address, duration during which the neighbor stays Up, and IP address of its directly connected interface.	-
vpn-instance vpn-instance-name	Specifies the name of a VPN instance.	The value is a string of 1 to 31 case-sensitive characters, spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.
interface interface-type interface-number	Specifies the type and number of an interface.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

In an IS-IS area, if you need to check whether two devices can communicate with each other, run the display isis peer command to view information about the neighbor, such as its status, duration during which the neighbor stays Up, and the neighbor type.

Example

# Display IS-IS peer.

<sysname> display isis peer

                          Peer information for ISIS(1)

  System Id     Interface          Circuit Id       State HoldTime Type     PRI
-------------------------------------------------------------------------------
0000.0000.0001   GE0/0/0          0000.0000.0001.01   Up    24s   L1(L1L2)  64
0000.0000.0001   GE0/0/0          0000.0000.0001.01   Up    24s   L2(L1L2)  64

Total Peer(s): 2

**Table 1** Description of the **display isis peer** command output
Item	Description
System Id	The system ID of the neighbor
Interface	Type and Number of the interface
Circuit Id	Circuit ID of IS-IS
State	Status of the neighbor, which can be any of the following: Up: indicates that the neighbor is Up, and the two ends can exchange messages. Init: indicates that only the local end can receive packets from the remote end. It is displayed when authentication is configured on the remote end. Down: indicates that the neighbor is Down. This is the initial status, indicating that no message is received from the neighbor. The status is not displayed in most cases.
HoldTime	Holdtime of the adjacency
Type	Neighbor type, which can be any of the following: L1: indicates that the neighbor type is Level-1 and interfaces at both ends are Level-1. L2: indicates that the neighbor type is Level-2 and interfaces at both ends are Level-2. L1(L1L2): indicates that the neighbor type is Level-1 and interfaces at both ends are Level-1-2. L2(L1L2): indicates that the neighbor type is Level-2 and interfaces at both ends are Level-1-2.
PRI	Priority of the peer that candidates for DIS
Total Peer(s)	Total information of neighbors

# Display details of the peer by specifying verbose.

<sysname> display isis peer verbose

                          Peer information for ISIS(1)

  System Id     Interface          Circuit Id          State  HoldTime   Type     PRI
-------------------------------------------------------------------------------
0000.0000.0001  GE0/0/0           0000.0000.0001.01      Up     26s     L1(L1L2)   64
  MT IDs supported       : 0(UP)  2(DOWN)  100(UP)  200(DOWN)
  Local MT IDs           : 0  100  110

  Area Address(es)       : 10
  Peer IP Address(es)    : 10.10.10.1
  Peer IPv6 Address(es)  : FE80::996B:0:9419:1
  Uptime                 : 00:00:19
  Adj Protocol           : IPV4
  Restart Capable        : YES
  Suppressed Adj         : NO
  Peer System Id     : 0000.0000.0001

0000.0000.0001  GE0/0/0           0000.0000.0001.01      Up     27s     L2(L1L2)   64
  MT IDs supported       : 0(UP)  2(DOWN)  100(UP)  200(DOWN)
  Local MT IDs           : 0  100  110

  Area Address(es)       : 10
  Peer IP Address(es)    : 10.10.10.1
  Peer IPv6 Address(es)  : FE80::DC40:0:47A9:1
  Uptime                 : 00:00:19
  Adj Protocol           : IPV4
  Restart Capable        : YES
  Suppressed Adj         : NO
  Peer System Id     : 0000.0000.0001

Total Peer(s): 2

**Table 2** Description of the **display isis peer verbose** command output
Item	Description
MT IDs supported	IDs of topology instances supported by the remote interface
Local MT IDs	IDs of topology instances supported by the local interface
Area Address (es)	Area addresses of the neighbor
Peer IP Address (es)	Peer IP addresses
Peer IPv6 Address(es)	Peer IPv6 addresses
Uptime	Time for the adjacency in the Up status
Adj Protocol	Protocol used for setting up the adjacency (IPv4 and IPv6)
Restart Capable	Whether GR is supported: YES: indicates that GR is supported. No: indicates that GR is not supported.
Suppressed Adj	Whether neighbor suppression is supported: YES: indicates that neighbor suppression is supported. No: indicates that neighbor suppression is not supported.
Peer System Id	The System ID of IS-IS peer