I upgraded a 2921 router from 15.1-4.m5 to 15.2-4, both the T train and the M train. On both 15-2 releases the eigrp neighbor relationship between th 2921 and the two nexus7010s started flapping. The only thing that stopped the flapping was going to 15.--4.m7. The link was completely stable before the 15.2 upgrades. Did Cisco change something in eigrp in 15.2? Or is it not liking the Nexus?
I checked Arcsight for logs from the 2 Nexus 7010 , there were no logs in the hour I had the 2921 upgraded to 10.2 before putting it back to 15.1 for todays production. The logs on the 2921 are gone, that is also an internal zone-based firewall and the logs scrolled off. However I was on the console, and the only logs coming across were :
Looking at ip eigrp nei on the 2921 the neighbors were on the list, up arrrow, enter repeatedly showed the neighbor for a max of 53 seconds before going back to 0. After the return to 15.1 the neighbors have been stable.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...