Hello all,
I would like to have your advice about a ‘problem’ I’m having on a simple Lan (see png attached) having a cisco 1710 (192.168.0.254) as a router to a hdsl connection to my ISP.
The 1710 is managed by ISP so we do not have access to it.
I’m trying to solve a problem with the cisco having cpu saturated to 100% thus causing cut off of voice lines due to low resources (this is what I was said by cs of isp).
Did you ever had such a problem on your huge experience?
Thanks in advance for the help.
The only way to solve HIGH CPU in a cisco router is to have access to it or be able to sniff traffic on all sides of it.
I would say that the router was/is under attack or there is a mis configuration of the router.
Since you can’t log into the router you will need them to fix it or block the attack.
In the mean time we did some more checks with the ISP helpdesk.
It seems that all the cpu resources are taken from the snmp engine processing packets from the dude server… 
Something wrong in my configuration??
Remove most the services that are installed for the device.
I will try that, what is your suggested polling time for such a device?
I only poll the cpu every 30 seconds. I have no other services. I also watch bandwidth on the interfaces…
If that is too much for the router to handle there is probably something else going on.
How many services and how often were/are you polling?
I just left the standard polling options and services from the installation. I still have to tune everything up.
At the moment the server does not run all the time, just when I run the client.
Thanks for the useful info.