Hi Keegan As far as I know , in VPLS, it uses split horizon as loop avoidance mechanism , and you should not see any loop occurring in a VPLS setup,(pending the rest of config is correct)
The only way you could have a loop in VPLS is when you start having your CE dual homed , where in that case you need to either configure STP , or you could use the primary/backup knob to define which PE is the primary and which is the back up. As for BUM traffic, If you take the VPLS as a giant switch then you are bound to see those traffic flooded everywhere in the network, personally as best practice,I used a filter on each PE's to policed the amount of BUM traffic , so that it doesn't use too much CPU/memory on the PE's to process these packets. I would like to hear also from others in the list who could provide more best practice Cheers On 11 October 2011 20:19, Keegan Holley <keegan.hol...@sungard.com> wrote: > I'm trying to get my handle on vpls loop avoidance and I can't remember the > default behavior regarding site-id's and node-id's. I remember reading > about it in one config guide or another but I can't seem to find it now. > I'm trying to remember if broadcast, multicast and unknown unicast is > flooded between PE router interfaces with the same site id's and maybe just > some general guidelines on their behavior. I'm trying to understand best > practices for loop avoidance. It seems to loop with any standards based > STP > protocol if two or more interfaces are connected to routers configured with > the same site-id. The behavior I see seems to be the opposite of what the > website says. > > > http://www.juniper.net/techpubs/en_US/junos10.4/topics/concept/vpn-configuring-ethernet-switch-as-the-ce-device.html > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp > -- Humair _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp