The first two log messages indicate that the holding time expired. The EIGRP holding time is generally 3 times the EIGRP hello interval. Can you tell us whether any of the routers involved have changed either the EIGRP hello timer or the EIGRP hold timer?
In general what this error indicates is that for some reason the router which generates the error message has missed 3 consecutive hello messages from the neighbor(s). If the router misses at least 3 consecutive hello messages it generally indicates that there is a problem with the neighbor or a problem with the media over which the neighbors are connected.
You describe this as a MAN connection between 2 sites for which I would generally expect 1 neighbor. But I am curious that this router has 2 neighbors on this interface. Can you clarify the topology?
In looking at the time stamps it appears to be about 16 and a half minutes from the time that the neighbors failed to the time that the neighbors came back. If you look on the neighbor routers do they indicate interruptions in service at about the same time?
My guess is that the MAN connection was having problems for those 16 and a half minutes.
If the other routers do not have logs to show what happened and if the telco says that they had no issues, then it will be difficult to determine what happened. All I can say at this point is that the original post has log messages that show that for about 16 and a half minutes the router was not receiving EIGRP hello messages.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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