12-11-2013 09:04 AM - edited 03-07-2019 05:02 PM
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?
Thanks
Colin
12-11-2013 09:56 AM
Colin,
could you post the output of
show ip ospf interface
from the common OSPF link's interfaces of the 2921 and 3750?
Regards
Rolf
12-11-2013 10:34 AM
Rolf, i don't have access to the devices at the moment, just wondered if anyone had experieneced the same issue.
Colin
12-13-2013 05:18 AM
In this version of IOS, there is by default a hidden command to make the interface passive in ospf.
12-13-2013 10:47 AM
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.
12-16-2013 04:00 AM
Yes it is, i had never come across that before either!
12-16-2013 05:41 AM
Hello
The adjacency needs to match the following in the hello packet.
Hello/Dead interval timers
Authentication ( if any)
Subnet
Area
Area stub flag ( if stub are is to be configured - then all routers in the stub domain need to configured as a stub)
res
Paul
Please don't forget to rate any posts that have been helpful.
Thanks.
12-16-2013 06:23 AM
Paul,
the issue was the hidden comand making the interface passive within the EIGRP process!
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