Have an issue, where Ospf will not come up between a 2921 running 15.2(4)M4 and a 3750G running 12.2(35)SE5.
Ospf is running between physical interfaces.
Ospf running between the 2921 and a 6513 with no issue.
Ospf running between the 3750 and other switches no issue.
debug ip ospf hello, shows hello's bein sent from the 2921 to the 3750, but none from the 3750.
Unable to run debugs on the 3750 as it is in production.
able to ping between the devices and tried configuring different type of Ospf network types.
Has anyone seen this issue?
could you post the output of
show ip ospf interface
from the common OSPF link's interfaces of the 2921 and 3750?
A hidden command? Are you saying the command "passive-interface default" is enabled by default for OSPF on 12.2(35)SE5? Never seen that before.
The adjacency needs to match the following in the hello packet.
Hello/Dead interval timers
Authentication ( if any)
Area stub flag ( if stub are is to be configured - then all routers in the stub domain need to configured as a stub)
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