ARP Monitoring does not work when the bond has a VLAN which is a member of a bridge and shows a continuously increasing link failure count
Issue
-
ARP Monitoring appears to fail when a bond is stacked with a VLAN and a bridge.
For example if a bridge is configured on top of bondX interface(with ARP link monitoring) then the issue isn't observed, its only observed if a bridge is configured on top of bondX.vlan interface (with ARP link monitoring). -
The bond's
MII Statusfor each slave persistently showsgoing back. - Depending on the exact version of the bonding driver, each slave's
Link Failure Countcontinuously increases. -
This issue affects topologies such as the following where the IP address is assigned to the bridge interface (br0 below) and a VLAN of the bond is attached to the bridge:
.----------------. | bridge | [ slave eth0 ] -\ | | >- [ bond0 ] - [ VLAN bond0.10 ] [ br0 10.0.0.10/24 ] [ slave eth1 ] -/ | | '----------------'
Environment
- Red Hat Enterprise Linux 6
- Bridge
- VLAN
- Bonding with ARP link monitoring
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.
