Teaming configuration with ARP ping link watch and link_watch.send_always option enabled in active-backup mode , causes trouble from switch side.
Issue
By default, ARP requests are sent on active ports only. Sometimes is needed to have link_watch.send_always option enabled, so that ARP probes are sent also on the inactive ports. This can cause issues on the switch side.
In more detail :
1. runner.hwaddr_policy set to same_all, result in MAC address flapping on the switch.
2. runner.hwaddr_policy set to only_active, result in frequent changes of the switch ARP table which causes pause of traffic flow.
Environment
- Red Hat Enterprise Linux 7
- Teaming in active-backup mode
- link_watch.send_always enabled
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