AIX'ers;
We have an F50 running AIX 5.1 ML04 with the standard eth0 adapter. The server works great with its own IP on the network. We had to add an IP alias to allow it to communicate with a different subnet. This was not problem and we had to add a static router of the remote IP address to use an alternate gateway. It has worked just fine for over 9 months.
Recently (2 Wks) the AIX box keeps loosing its socket on that link and goes into recovery mode attempting to re-establish the socket. During this time if I traceroute to the remote IP the route uses the default gateway which leads to the Internet rather than the statis gateway leading to the alternate router. Eventually the socket will be re-established and communications resumes. If I traceroute following that it uses the alternate gateway and proceeds normally.
Does anyone have any ideas as to what might be interfering with the static (alternate) gateway causing the socket to be lost? On the AIX box there are no unknown daemons running (especially routed or gated).
The only three items that seem to have changed on this network are these:
1) a new security appliance was installed - vendor states this runs in bridge mode so does not have the capability to alter roures;
2) we added a Linux server running Novell eDirectory but we pulled the network cable Friday and the problem still occurs;
3) all of our desktops (approx 50) have been upgraded to Win XP Pro but most of them were completed before this problem started.
I guess my question is... what should I be looking for on the network to locate the culprit? What monitoring tool might be available that would have a change of identifying this?
I haven't run into this in my entire career.
Thanks and I hope someone has some suggestions.
Bob
We have an F50 running AIX 5.1 ML04 with the standard eth0 adapter. The server works great with its own IP on the network. We had to add an IP alias to allow it to communicate with a different subnet. This was not problem and we had to add a static router of the remote IP address to use an alternate gateway. It has worked just fine for over 9 months.
Recently (2 Wks) the AIX box keeps loosing its socket on that link and goes into recovery mode attempting to re-establish the socket. During this time if I traceroute to the remote IP the route uses the default gateway which leads to the Internet rather than the statis gateway leading to the alternate router. Eventually the socket will be re-established and communications resumes. If I traceroute following that it uses the alternate gateway and proceeds normally.
Does anyone have any ideas as to what might be interfering with the static (alternate) gateway causing the socket to be lost? On the AIX box there are no unknown daemons running (especially routed or gated).
The only three items that seem to have changed on this network are these:
1) a new security appliance was installed - vendor states this runs in bridge mode so does not have the capability to alter roures;
2) we added a Linux server running Novell eDirectory but we pulled the network cable Friday and the problem still occurs;
3) all of our desktops (approx 50) have been upgraded to Win XP Pro but most of them were completed before this problem started.
I guess my question is... what should I be looking for on the network to locate the culprit? What monitoring tool might be available that would have a change of identifying this?
I haven't run into this in my entire career.
Thanks and I hope someone has some suggestions.
Bob