When the LACP interface is configured, the master VAP is used to send the LACP packets. If the LACP is shared between multiple VAP groups, the LACP master VAP is the master VAP of the VAP group with the lowest VAP group ID.
To find the VAP group ID run the following command from the CPM prompt:
To find the master VAP run the following command:
# show ap-vap-mapping Module Slot Status VAP IP Address VAP Group Index Master (true/false) AP3 5 Active 126.96.36.199 fw 1 false AP4 6 Active 188.8.131.52 fw2 1 false AP5 7 Active 184.108.40.206 fw 2 true AP9 11 Active 220.127.116.11 fw2 2 true (4 rows)
In this case
fw is the VAP group with lowest ID and
fw_2(AP5)is the LACP master VAP.
AP5 is reloaded, then
AP3 will become the master VAP for the VAP group
fw and for the LACP interface. In this scenario, the priority delta of the group interface
MLT1 will not decrease and the failover will not occur.
If the VAP group
fw is reloaded, then the priority delta of the group interface
MLT1 will decrement by 20 in both failover groups until the LACP master VAP is available. This might cause an unexpected failover.
# reload vap-group fw
# show vrrp detail-status Execute "show vrrp detail-status-help" to see help for this command.