[Lxc-users] Networking fails sporadically in containers on ubuntu server 12.10

[Guido Jäkel]

Dear David,

what's about the STP settings (espc. "hello" time and forwarding delay) of the involved Linux bridge(s) *and* on the external router(s)? You may e.g. post output of "brctl showstp br0"


Don't know if it's still up to date, but  http://www.linuxfoundation.org/collaborate/workgroups/networking/bridge  mention about "30s" as a default value for the forward delay:

One common mistake is that the default bridge forwarding delay setting is 30 seconds. This means that for the first 30 seconds after an interface joins a bridge, it won't send anything. This is because if the bridge is being used in a complex topology, it needs to discover other bridges and not create loops. This problem was one of the reasons for the creation of Rapid Spanning Tree Protocol (RSTP).

greetings

Guido