We're having some unicast flooding issues on our network and was told to implement these 2 commands to help with the issue:
mac-address-table aging-time 0 routed-mac
Previously we had the aging-time set to 14400 so there is some concern with disable the aging-time using the 2nd command above. What would be the implications of disabling mac-address-table aging? What exactly does mac-address-table synch do?
To synchronize the Layer 2 MAC address table entries across the Policy Feature Card (PFC) and all the Distributed Forwarding Cards (DFCs), use the mac-address-table synchronize command in global configuration mode. To disable MAC address table synchronization or reset the activity timer, use the no form of this command.
Good info guys. Most of our unicast flooding is the result of dual-attached servers running Linux with bonding software for the NICs and asymmetric routing in our network as well as a fully meshed switched topology.
Won't setting the aging-timer to 0 mean that the routed MAC entries will never expire and so we may someday run into a situation of exhausting our ARP tables?
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...