http://forums.juniper.net/t5/Ethernet-Switching/spanning-tree-bpdufilter/td-p/113048
http://en.wikipedia.org/wiki/Multicast_address#Ethernet Looks like someone else with the same issue. Careful taking your layer 2 domains too far :D Mark On Wed, Sep 11, 2013 at 8:18 PM, Dennis Hagens <[email protected]> wrote: > Hi All, > > Is there some way to filter out STP TCN BPDU's on a Juniper EX series > switch? > > We have some old Netgears in our office environment (yes, I need to get > rid of those) which send TCN's on edge port flaps. > This causes a lot of reconvergence / mac table flushes on our datacenter > switches, which are connected via layer 2 with the office. We currently > hooked up an HP switch with TCN guard to mitigate this, but this > introduces a SPOF. > > Any ideas? > > Thanks, > > Dennis Hagens > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > -- Regards, Mark L. Tees _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp

