[ovs-dev] [PATCH v2] stp: Fix stp tests and make them more stable.

[Alin Serdean]

This patch will fix the failing test on the windows unit test CI.

Acked-by: Alin Gabriel Serdean <aserdean at cloudbasesolutions.com>


> -----Original Message-----
> From: ovs-dev-bounces at openvswitch.org [mailto:ovs-dev-
> bounces at openvswitch.org] On Behalf Of nickcooper-zhangtonghao
> Sent: Thursday, March 23, 2017 8:36 AM
> To: dev at openvswitch.org
> Subject: [ovs-dev] [PATCH v2] stp: Fix stp tests and make them more stable.
> 
> The difference between machines may cause the test to fail.
> More importantly, when topology is changed or the root brdige receives the
> TCN BPDU, the root bridge will start the topology change timer. We should
> wait the topology change timer to stop after 35s (max age 20 + forward delay
> 15). After 35s, the root bridge will stop send CONF BPDU with
> STP_CONFIG_TOPOLOGY_CHANGE flag and the topology will be stable.
> During this time, we should make time warp (in a second) because the hold
> timer of stp ports will stop after 1s. Then the root bridge can send quickly
> topology change ack (other bridges may send TCN BPDU to root bridge) for
> avoiding root brdige to flush fdb and mdb frequently.
>