North American Network Operators Group|
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical
Question about DS3 maintenance
Hello. Our upstream performed some scheduled maintenance early this morning during the 1am PDT hour. The circuit was down a grand total of about three minutes or so. The circuit came back up, but then went back down ten minutes later, staying down for a while. All it took was a simple interface bounce to bring this serial DS3 back online. The questions I have are are as follows: 1. What would cause an otherwise normally-functioning circuit to drop like this? This assumes normally-functioning equipment at both ends. 2. What would cause it to not recover, again assuming everything on both sides is in otherwise working order? Keep-alives on our interface appear to be set at their default of 10 seconds. 3. Are there any ways to effectively troubleshoot this issue while it's happening? 4. Are there any steps we can take to prevent this from happening again? If anyone needs more details, please hit me off-list then I'll summarize if anyone's interested. In the meantime, I will put mechanisms in place so we can catch issues like this sooner so we can act sooner. Thanks in advance! --Ian.