We found that we have MAC flooding as a result of running HSRP and doing equal cost routing with OSPF. This is a known issue with the default ARP timeout of 4 hours and the MAC agingtime of 5 minutes. We have looked into removing asymmetric routing and have implemented ARP and MAC times of 1 hour for both. This has helped the situation, but the MAC is becoming "unlearned" in less than an hour (see attachment). Does a change in MAC agingtime require a reboot on specific or all switch platforms?
Doing unequal cost routing to the active HSRP does not seem like a good solution since it does not do load sharing and would require an OSPF convergence after the primary route went down, opposed to just switching immediatly to the equal route.
I see the MAC is not in the table when the flooding occurs. Could something else besides aging cause the MAC to be unlearned?
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...