Scott, Typically in this scenario I would recommend one of two things:
1) Use an MPLS VLL/L2-psuedowire with a secondary failover endpoint on one side. Only some equipment vendors implement this (Juniper being one of them) 2) Use a PPPoE pado delay. Set one BRAS to be some decent amount higher delay in sending out PADO packets. Any "decent" BRAS should support this. This does not include Mikrotik to my knowledge. With a Cisco BRAS you can use the following command in a BBA group in 12.4T+: http://www.cisco.com/en/US/docs/ios/bbdsl/configuration/guide/bba_pppoe_sss.html Regards, Patrick Tue, Nov 02, 2010 at 11:36:01PM -0700, Scott Vander Dussen wrote: > Cross posting from another list for different opinions.. > > We're looking to have more than one PPPoE Concentrator available so that if > one goes down due to catastrophic failure, the customers associated to that > concentrator will rollover to the next one. However, the concern is that > because the initial connection is layer 2 that both concentrators may see the > same connection attempt and authenticate both. Is there a real effective way > of having two concentrators that either load balance or provide redundancy? > > Thanks, > `S > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
