01-06-2003 07:51 PM - edited 03-02-2019 03:58 AM
Routing Gurus!
Can an router running ospf/eigrp establish adjacency/neighbor status with a neighbor router connected via a passive-interface? If so, how?
Thanks.
Solved! Go to Solution.
01-06-2003 08:51 PM
Hi, here is the answer for your ospf/eigrp and passive interface question.
http://www.cisco.com/warp/public/103/16.html
hope this helps
Rgds
Jorge
01-06-2003 08:51 PM
Hi, here is the answer for your ospf/eigrp and passive interface question.
http://www.cisco.com/warp/public/103/16.html
hope this helps
Rgds
Jorge
01-09-2003 12:51 PM
Jorge,
Thanks... I inferred from the document that a router running ospf with a passive interface can still establish a neighbor adj on that interface.
If this is not correct let me know.
01-09-2003 02:47 PM
Hi,
No, in OSPF the passive interface will not form adjacency because is not participating in routing, therefore OSPF will not count that interface in its routing computation.
Also, remember, adjacent/neighbors have a direct connected interface.
Before OSPF adjacency is formed, it must go through several Startup/states changes before it becomes fully adjacent with its neighbor in a FULL State manner to ultimately participate in OSPF routing calculations.
You can lookup OSPF startup states to learn about how OSPF stablish adjacency.
Hope this helped
Rgds
Jorge
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