I was hoping someone could explain to me how OSPF handles link flapping. My scenario is we typically have a preferred primary path through the network, a secondary and then a backup over leased lines. The primary path has been created by applying ospf costs to interfaces. Ideally we want traffic to remain over this primary path.
If the primary path fails, it takes about 15-20 seconds on our network to converge and take the secondary path. The concern I have is if the primary fails, recovers, fails, etc...could we be in a state where the network would remain down whils OSPF is in a constant state of reconvergence?
Are there any mechanisms built into the routing protocol to detect and prevent this--kind of like hysterisis we have in loop switch devices for DS1 rings? There are reverting timers where the primary path needs to be up error free for a certain period of time before the circuit reverts.
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 ...