bridging VLAN interfaces and STP

Dustin J. Mitchell dustin at v.igoro.us
Sat Sep 1 23:13:03 UTC 2012


On Sat, Sep 1, 2012 at 5:55 PM, Peter Jeremy <peter at rulingia.com> wrote:
> That looks like RSTP is enabled on both bridge10 and bridge20 but is
> not seeing incoming [R]STP packets.  Are you sure the switch connected
> to vr1 is configured with per-VLAN STP (this is probably not the
> switch default).
>
> Have you tried running tcpdump on vr1 and checked that you are seeing
> STP packets within the VLANs.

Actually, if you compare with my original ifconfig, you'll see that
this particular arrangement shows STP as enabled on the bridge, but
not on any of the members (no STP in their options.  In the OP, you
can see that the vr{2,3} get STP in their flags
(<LEARNING,DISCOVER,STP,AUTOEDGE,AUTOPTP>) while vr1.10 does not.
That, and the error message from the 'ifconfig bridge10 stp vr1.10'
command..

Dustin


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