How to revert to the original VPC role?
For example, after a reload if the primary device takes the role of operational secondary and the secondary device takes the role of primary operational, you can change the vPC peer roles to their original defined roles using the vpc role preempt command. Always check the existing device role priority before switching vPC role.
What happens if only keep-alive fails in VPC?
If only keep-alive fails, nothing will happen. Only heartbeat between Primary and Secondary node will be lost. Restore the link as early as possible to avoid further complication if double failure happens. If peer-link fails, then all the member ports from vPC secondary node will be suspended.
What should I do if my VPC fails?
Make sure peer-link is UP and running. The peer-link is important, so it’s really good idea to create port channel with multiple ports from multiple modules, so that, if a link/module goes faulty, other links remain up and active. If the member port fails for a particular end host, that host only will be affected.
Can you change the priority of a VPC device?
Changing the priority of the vPC peer devices can cause the interfaces in your network to go up and down. If you want to configure the role priority again to make one vPC device the primary device, configure the role priority on both the primary vPC device with a lower priority value and the secondary vPC device with the higher value.
For example, after a reload if the primary device takes the role of operational secondary and the secondary device takes the role of primary operational, you can change the vPC peer roles to their original defined roles using the vpc role preempt command. Always check the existing device role priority before switching vPC role.
What to do when your VPC won’t launch?
If VPC still won’t launch, open the Java Control Panel again, go to the Security tab and click on “Restore Security Prompts” then “Restore All”. Try launching VPC again. In Internet Explorer, check to see that ActiveX is disabled, if not at the browser level, at least for the VPC website.
What’s the difference between VPC trunk and switchport mode?
Difference = switchport mode trunk allowed vlan 1-3967,4048-4093 on Eth8/1 and switchport mode trun on Eth3/1 ). You need to have a similar config on the physical interfaces of the VpC. You can also check the consistency of the config throughout the two vpc peers => Regards.
Changing the priority of the vPC peer devices can cause the interfaces in your network to go up and down. If you want to configure the role priority again to make one vPC device the primary device, configure the role priority on both the primary vPC device with a lower priority value and the secondary vPC device with the higher value.