When the link is down in the remote end are you seeing any packets using that link on the remote end ?
Is the bundle constructed over simple NM(E1) interfaces or using controller cards ?
Have u checked up for a momentary flaps/fluctuations which may also a reason for this ..
one more criteria may be the link termination on the remote end mite got have swapped and u mite be checking the link wich is up.its difficult to identify coz ur not assigning the ip address to the induvidual links instead to a multilink(logical)interface.
do cehck out for logs on the remote end and find the status of the other link too.also the b/w under the multilink when the link is down.
also can u paste the running configs of the physical link,multilink as well as the show interface output of all the interfaces..
Also the routers being used on both the locations as well as the ios code on them.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...