Intermittent Internet-Could it be the Router?
Posted on 2003-11-15
I need some input!!
Intermittent loss of internet access.
With known ping-able sites, sometimes get the 4 replies, sometimes get destination host unknown, sometimes get 4 request timed out, sometimes get a couple replies followed by timeouts. Same results, regardless if using names or ip addresses.
Traceroute reports the router x.x.x.10, then followed by all Request timed out.
After a 'rest', everything just comes back.
(sub-observation : makes it kinda tough to test when many locations are now rejecting pings and tracerts - is there a list of KNOWN good ping-able locations?)
1 w2k server sp4, dns, active directory
~40 clients - mixed w2k prof., win 95/98/xp
HP procurve switches
Adtran TA850 router, pulling 4 channels for fractional T1 for internet access
Server IP x.x.x.1
Router IP x.x.x.10
Thought there was a dns issue, so reconfigured dns on server - actually a fresh install of w2k(also corrected some other issues)
Thought it might be the switch/hub, 'cause the fan was blown and it was running really hot - replaced.
Thought there might be problems with clients - reconfigured to make sure there weren't any conflicting settings.
Thought it might be cable from router to switch - replaced.
Thought it might be cable from server to switch - replaced.
Thought it might be my drinking problem - drank more.
Thought there might be a problem with the T1 providers circuit - requested a test, all tested ok.
I can ping to my public IP address from home (different provider) and never a problem with ping results (although, the tracert does time out, but I suspect that is because some router on the path is denying tracert requests ??????????????)
None of the above altered the situation for the better or worse - no change.
Tried to recall what could have possibly changed. About a month ago, we took some kind of hit where we lost the T1 - voice and data, as well as the battery backup that the router, phone system, etc. is plugged into. Router lost the configuration. Provider reconfigured the router, and we had voice and data again. I didn't notice the severity of the intermittent internet access - not really sure if it was an issue, or if it is indeed worse now.
All of the above things I tested/replaced/rebuilt, COULD have been the culprit, so I suppose the router COULD also be the culprit. Does anyone feel, with any certainty, based on the above information, or am I just grasping at straws, thinking its the router - other than the fact it is the last, and as of yet only unreplaced, piece in the connectivity 'channel'? Is it possible (again with any certainty) that the router could have sustained more damaged than was originally thought? What about the firmware?
If not the router, what else could it possibly be? I'm at my wits end - help.