Having just done this in the last week (strictly EXs), I'd suggest that neither your OAM and G.8032 are configured correctly - post up some configuration if you can.
Make sure you have your link-fault-management action-profile is set to link-down and that you have an apply-action-profile bound to the interface as well. My testing (very rough) showed about 0.5 seconds between link down and switch-over - I chalk this up to my test lab being copper interfaces and the slight lag in link-down detection. I think the minimum timers for OAM on the EX are 400ms x 3, which is nothing special, so unless you have intermediate Layer 1 devices to detect failure in, I don't think mixing OAM and G.8032 really buys you BFD-like performance. I'm hoping this will be improved in the future - I seem to recall Extreme's EAPS clocking in at a order of magnitude or two quicker. Cheers, Ben On 01/06/2012, at 10:21 PM, Ben Boyd wrote: > Experts, > > Does anyone out there have any working G.8032 ethernet ring w/ OAM backend > configurations/implementations? > > > I setup an 8 switch (EX/MX mix) ring in the lab and OAM seems to be > complicating things rather than acting like a layer 2 BFD. > > > When I fail a node (not the ring owner) without OAM configured in just a > plain G.8032 ring, the convergence time is around 30 seconds. (Seems a bit > high. I've seen better times with RSTP) > > When I fail a node (not the ring owner) with OAM configured, 50-70% of the > ring goes to discarding and fluctuates from there, never ultimately > converging. > > Link failures on the other hand, converge in about 45ms. > > > > If you need configs I can post them, but they're pretty vanilla (from the > config examples on Juniper's site). > > > > ----------------------------------- > Ben Boyd > [email protected] > http://about.me/benboyd > > > > > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
