Nick, when I did this lab I thought the same thing, but after looking at the idea of using some other method of learning the lo0 via BGP and an IGP I thought about how would the backdoor command come into play; which it would never help because if you loose the IGP route and the 1.1.1.1 was populated into the BGP table, we would drop the connection anyways, therefore removing the network statement from R1 was the only logical answer I could come up with. In this particular case there is a single connection with two peers from R1s perspective.
Regards, Joe Sanchez ( please excuse the brevity of this email as it was sent via a mobile device. Please excuse misspelled words or sentence structure.) On Sep 14, 2012, at 8:03 AM, Nick Bonifacio <[email protected]> wrote: > Spoiler alert: Do not read ahead if you have not done this lab/question yet! > > > Ticket 5 is as follows: > "The BGP peering between R1 and R2/R4 is flapping and needs to be stabilized. > Please correct the problem." > > > From my first look at R2 and R4, it appears that they are learning about > 1.1.1.1 (update source) through BGP which would of course cause problems. > The solution is to remove network 1.1.1.1 mask 255.255.255.255 from router 1, > but to me this seems like it would go against "keep the spirit of the config". > > What I did on R2 and R4: > > > router bgp 2456 > network 1.1.1.1 mask 255.255.255.255 backdoor > > This makes the preferred route to 1.1.1.1 over OSPF instead of BGP by making > the distance of the 1.1.1.1 route 200 and keeps the config intact. > > Is this a better/worse solution? Do I not understand the function of the BGP > backdoor? > > thanks, > Nick > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
