[j-nsp] Could you pls clarify a bit about OAM for link fault management?

[Victor Sudakov]

Chuck Anderson wrote:
> > > 
> > > Something like this should do the trick once you've configured it on both ends:
> > > 
> > > set protocols oam ethernet link-fault-management action-profile UDLD event link-adjacency-loss
> > 
> > I have come to the conclusion that 
> > 
> > "set protocols mstp interface ge-0/0/22.0 bpdu-timeout-action block"
> > 
> > might do the trick as well if configured on all interfaces connected to
> > the MUXes.
> 
> That would only work on the upstream interface facing the root bridge
> where it is expected that it receive BPDUs.  The downstream interface
> would be sending BPDUs in that case, and not expect to receive them.

Then the rogue link will be blocked from the other side, won't it?

> If the topology dictates that one should never expect to receive BPDUs
> on such a port (the port should never lead to a root bridge), I would
> configure:
> 
> set protocols mstp interface <downstream> no-root-port
> 
> instead of the "bpdu-timeout-action block".

The topology in question is basically a ring, so I guess the root
bridge can emerge from either side of a non-root bridge.


-- 
Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
sip:sudakov at sibptus.tomsk.ru