10-03-2005 07:45 PM - edited 03-03-2019 12:15 AM
Hi all,
I have a few switches which are cat6509,cat4006,cat3524. They are connected with each other through 802.1Q trunking. Main backbone is Cat6509. All devices have vlan 1 ip address for management.
Problem is ,sometimes, I can't ping the vlan 1 ip addresses of cat 4000 and cat 3524 from cat6509 but those devices are normaly operating and users on those devices can connect anywhere.
Is this the for traffic priority ? or devices' weird behavior ?
Thanks in advance..
Welcome any possibilities
10-03-2005 08:24 PM
Is it always that you cannot ping these management addresses or just sometimes? Look at your access lists (deny ICMP)...
Josef.
10-03-2005 09:23 PM
Hi,Josef..
It happens from time to time..
Of couruse, there is not ACL about ICMP.
Is that possible that when there is burst traffic ?
thanks in advance..
10-04-2005 08:04 AM
If the supervisor gets really busy then it may not respond to a PING. If it's getting that busy though you need to find out what is driving that utilization . Can you telnet to the switch when it doesn't ping ?
10-04-2005 04:52 PM
Hi glen..
I couldn't ping and telnet in that situation. So I couldn't see the utilization of that devices.
Is the problem is result of High CPU utilization ?
In that situation , Traffic is forwarding normaly except pinging to the vlan 1 address.
Thanks in advance...
10-04-2005 05:15 PM
Sounds like it to me .
10-04-2005 05:25 PM
don't know how new your code is but you could use the command "show proc cpu history" and this will feed you a graph of the last few minutes and up to the last 72 hours for cpu utilization . Not sure if it is supported on the newer catos code, almost think it is .
10-05-2005 06:59 AM
Thanks glen..
I will try..
It's helpful..
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