10-02-2017 01:44 AM - edited 03-08-2019 12:13 PM
my ospf neighbor today is in 2WAY/DROTHER state,the ospf has running for four years and no issue, the ospf interface is up/up, but log says : neighbor from 2WAY to DOWN, Neighbor Down: Dead timer expired, what's the possible reason? how to fix
10-02-2017 02:24 AM
10-02-2017 02:39 AM
10-02-2017 03:05 AM
that core switch all neighbor become ospf 2 way suddenly, no configuration change, can't figured out why it happens
10-02-2017 03:17 AM
10-02-2017 05:08 AM - edited 10-02-2017 05:19 AM
Hi
Also verify the ospf network type under the interfaces.
Also you can run a: debug ip ospf adj (recommended after business hours)
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