Hi Tim not sure what you mean by using LACP/AE accross the multiple network to R2 , as LACP PDU does not go beyond the first physical interface it encounters, unless as mention by David, you use some kind of tunneling, but then again I am not sure how it works accross providers.
But David is right , CFM is the way to go in your setup, To bring the interface down, you should be able to create an "action profile " under CFM , I am sure there is an option to bring the link down and you can then apply the action profile Cheers On 19 October 2011 06:30, David Ball <[email protected]> wrote: > On 18 October 2011 22:46, tim tiriche <[email protected]> wrote: > > Can i run link fault management between R1-R2 or is LFM only between > > R1 - switchA? > > The latter, as LFM PDUs shouldn't be forwarded by switches. It > should be link-local. > > > What keepalives method i can use to detect a failure somewhere in the > > provider and bring the R1-R2 physical link down. > > Bring this link as AE and run LACP? > > OAM CFM (connectivity fault management) could be used for this, if > R1 and R2 support it, which is designed to provide end-to-end OAM > monitoring via periodic CCMs (continuity check messages). We're > seeing better support for this in the 11.2 (or was is .3?) or later > code on MXs. You may need an event script to actually tear your link > down locally if that's what you're looking for (based on a syslog > event, for example), as OAM CFM doesn't do that for you. > > I wouldn't trust the intermediary providers to transport > 802.3ad/LACP PDUs transparently, unless they all have indicated that > it's supported via L2 protocol tunneling (though I'd still be a > skeptic, if there are multiple carriers). > > David > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > -- Humair _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp

