Display IS-IS Logical Interfaces

Use the following procedure to display the Intermediate-System-to-Intermediate-System (IS-IS) logical interfaces configured on the switch.

Procedure

  1. To enter User EXEC mode, log on to the switch.
  2. Display the IS-IS logical interfaces:

    show isis logical-interface [name | ipsec | shaper | mtu]

Examples

Example of a Layer 2 Core

Switch:1> show isis logical-interface
========================================================================================
 						ISIS Logical Interfaces
========================================================================================
IFIDX  NAME   ENCAP         L2_INFO                  TUNNEL     L3_TUNNEL_NEXT_HOP_INFO
              TYPE          PORT/MLT  VIDS(PRIMARY)  DEST-IP     PORT/MLT    VLAN   VRF
----------------------------------------------------------------------------------------
1      --     L2-P2P-VID    Port2/40  101,201(101)    --           --        --     --
2      --     L2-P2P-VID    Port1/3   102,202(102)    --           --        --     --
----------------------------------------------------------------------------------------
 2 out of 2 Total Num of Logical ISIS interfaces 
----------------------------------------------------------------------------------------

Example of a Layer 3 Core

Switch:1> show isis logical-interface
========================================================================================
 						ISIS Logical Interfaces
========================================================================================
IFIDX  NAME   ENCAP         L2_INFO                  TUNNEL     L3_TUNNEL_NEXT_HOP_INFO
              TYPE          PORT/MLT  VIDS(PRIMARY)  DEST-IP     PORT/MLT   VLAN  VRF
----------------------------------------------------------------------------------------
1      SPBoIP_T1    IP       --         --      41.41.41.41       MLT10     2     vrf24 
2      SPBoIP_T2    IP       --         --      42.42.42.42       MLT10     2     vrf24 
3      SPBoIP_4K5   IP       --         --      187.187.187.187   MLT10     2     vrf24 
----------------------------------------------------------------------------------------
 3 out of 3 Total Num of Logical ISIS interfaces 
----------------------------------------------------------------------------------------

Example showing the status of BFD configurations on the IS-IS Logical interface

Switch:1> show isis logical-interface
==============================================================================================
					ISIS Logical Interfaces
==============================================================================================
IFIDX  NAME       ENCAP   L2_INFO                  TUNNEL     L3_TUNNEL_NEXT_HOP_INFO  BFD
                  TYPE    PORT/MLT  VIDS(PRIMARY)  DEST-IP     PORT/MLT   VLAN   VRF   STATUS
-----------------------------------------------------------------------------------------------
1      tunnel01   IP      --        --             198.51.100.1  Port1/2  123    vrf30 disabled
2      tunnel102  IP      --        --             198.51.100.2  Port1/3  345    vrf20 disabled
-----------------------------------------------------------------------------------------------
 2 out of 2 Total Num of Logical ISIS interfaces
-----------------------------------------------------------------------------------------------

Example showing the full IS-IS logical interface name

The command show isis logical-interface truncates the IS-IS logical interface name to the first 16 characters. To view the entire name (up to a maximum of 64 characters), use the command show isis logical-interface name.

Switch:1> show isis logical-interface name
========================================================================================
 						ISIS Logical Interface name
========================================================================================
ID     NAME   
              
----------------------------------------------------------------------------------------
1      SPBoIP_T1 
2      SPBoIP_T2 
3      SPBoIP_4K5
6      This_Is_A_50_Character_ISIS_Logical_Interface_Name 
----------------------------------------------------------------------------------------
 4 out of 4 Total Num of Logical ISIS interfaces 
----------------------------------------------------------------------------------------

Display IS-IS logical interface configuration.

Switch:1>show isis logical-interface ipsec
====================================================================================================
                          ISIS Logical Interface IPSec
====================================================================================================
ID       Auth-Method   Auth-Key   Responder-Only   Remote NAT IP  Auth-Key-Len Status  Compression
----------------------------------------------------------------------------------------------------
1        RSA-SIG       ******     False            -              128          Enable  False

----------------------------------------------------------------------------------------------------
 1 out of 1 Total Num of Logical ISIS interfaces
----------------------------------------------------------------------------------------------------

====================================================================================================
                           IPSec Tunnel General Info
====================================================================================================
       IPSec tunnel source-ip-address :

====================================================================================================
                               ISIS IPSec Tunnels
====================================================================================================

ID     IPSec Dst Ip        TUNNEL_NEXT_HOP
                           PORT/MLT   VLAN      VRF
----------------------------------------------------------------------------------------------------
1      192.0.2.200          Port1/6    100       GlobalRouter
----------------------------------------------------------------------------------------------------
 1 out of 1 Total Num of Logical ISIS interfaces
----------------------------------------------------------------------------------------------------
Display the IS-IS logical interface egress shaping rate values. This command displays interfaces with egress shaping rates configured.
Switch:1>show isis logical-interface shaper
========================================================================================
                   ISIS Logical Interface Egress Shaping Rate
========================================================================================
ID       NAME                                                       service-rate(Mbps)
----------------------------------------------------------------------------------------
1        remote1                                                           135
2        remote2                                                           120
3        remote3                                                           178
----------------------------------------------------------------------------------------
 3 out of 3 Total Num of Logical ISIS interfaces
----------------------------------------------------------------------------------------

Example showing the IS-IS logical interfaces mtu values

This command displays the Maximum Transmission Unit (MTU) size for each logical interface.

Switch:1>show isis logical-interface mtu
========================================================================================
                   ISIS Logical Interface Mtu
========================================================================================
ID       NAME                                                              MTU
----------------------------------------------------------------------------------------
1        SPBoIP_T1                                                          751
2        SPBoIP_T2                                                         1000
3        SPBoIP_4K5                                                        1950
----------------------------------------------------------------------------------------
 3 out of 3 Total Num of Logical ISIS interfaces
----------------------------------------------------------------------------------------

Job Aid

The following table describes the fields in the output for the show isis logical interface command.

Parameter

Description

BFD STATUS

Specifies the status of BFD on this logical interface. The status can be enabled or disabled.

IFIDX

Specifies an index value for this logical interface.

NAME

Specifies the administratively assigned name of this logical interface, which can be up to 16 characters.

ENCAP TYPE

Specifies whether the encapsulation type for the logical interface is Layer 2 (L2–P2P-VID) or Layer 3 (IP).

L2_INFO

PORT/MLT

Specifies the port or MLT that the logical interface is connected to in an L2 network.

L2_INFO

VLAN

Specifies the list of VLANs that are associated with this L2 logical interface.

TUNNEL DEST-IP

Specifies the destination IP address for the logical interface.

L3_TUNNEL_NEXT_HOP_INFO

PORT/MLT

Specifies the outgoing interface (port or MLT) for VXLAN traffic.

L3_TUNNEL_NEXT_HOP_INFO

VLAN

Specifies the outgoing VLAN interface for VXLAN traffic.

L3_TUNNEL_NEXT_HOP_INFO

VRF

Specifies the name of the VRF that this L3 logical interface is configured on.

Variable Definitions

The following table defines parameters for the show isis logical-interface command.

Variable

Value

name

Displays the full name of the IS-IS logical interface (up to a maximum of 64 characters).

ipsec

Displays the IS-IS logical interface ID and IPsec authentication key.

shaper

Displays the IS-IS logical interface egress shaping rate values. Only interfaces that have egress shaping rates configured display.