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titleSpecifying a Backup Link
Code Block
languagetext
cumulus@spine01:~$ net add interface peerlink.4094 clag backup-ip 192.0.2.50
cumulus@spine01:~$ net pending
cumulus@spine01:~$ net commit
Note

The backup IP address must be different than the peer link IP address (clagd-peer-ip). It must be reachable by a route that does not use the peer link and it must be in the same network namespace as the peer link IP address.

Cumulus Networks recommends you use the management IP address of the switch for this purpose.

You can also specify the backup UDP port. The port defaults to 5342, but you can configure it as an argument in clagd-args using --backupPort <PORT>.

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cumulus@spine01:~$ net add interface peerlink.4094 clag args --backupPort 5400
cumulus@spine01:~$ net pending
cumulus@spine01:~$ net commit

To see the backup IP address, run the net show clag command:

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cumulus@spine01:~$ net show clag 
The peer is alive
     Our Priority, ID, and Role: 32768 44:38:39:00:00:41 primary
    Peer Priority, ID, and Role: 32768 44:38:39:00:00:42 secondary
          Peer Interface and IP: peerlink.4094 169.254.255.2
                      Backup IP: 192.168.0.22 (active)
                     System MAC: 44:38:39:FF:40:90

CLAG Interfaces
Our Interface      Peer Interface     CLAG Id   Conflicts              Proto-Down Reason
----------------   ----------------   -------   --------------------   -----------------
       leaf03-04   leaf03-04          1034      -                      -              
       exit01-02   -                  2930      -                      -              
       leaf01-02   leaf01-02          1012      -                      -

Anchor
vrf_backup
vrf_backup
Specify a Backup Link to a VRF

You can configure the backup link to a VRF or management VRF. Include the name of the VRF or management VRF with the clagd-backup-ip command. Here is a sample configuration:

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