Amit, Reason you learn all the routes via 2 different neighbors is because of the full mesh and the same bandwidth configuration on all interfaces. The routes are all equal cost therefore both showing up in your routing table (in this case because auto-summary is disabled on one router you learn 2 different networks instead of the same network twice with different next-hops).
Small addition on auto-summarization: Auto-summarization works on the major network boundary. If the 172.16.10.0/24 is learned on the 192.x or 10.x interfaces it will be auto-summarized by the router advertising it (unless no auto-summary is enabled as is the case on the router with the 172.16.10.2 and 192.168.1.2 interface IP's). This is the reason why you see the 172.16.10.0/24 subnet via 192.168.1.2 and not the major network address 172.16.0.0/16 twice as would be the case with auto-summarization enabled. Hope this sort of clarifies it for you. Kind regards, Patrick Keja -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Amit Jp Sent: 25 September 2012 16:55 To: ankit thakrar Cc: CC IE Subject: Re: [OSL | CCIE_RS] Eigrp output explanation /16 and /24 are learnt by different neighbors why not the same neighbor its coz on some router i have auto summary enabled. _______________________________________________ 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
