I have more then 20 Cisco routers which are part of a Cisco VOIP system. They end up E1 and ISDN cards, which means that the number of interfaces is between 300 and 500 on each. In reality i'm interested to monitor only the Ethernet and the physical E1, ISDN PRI or BRI.

I have tried to unmanage all interfaces and then chose to manage only the needed ones - maximum 10 per device. Unfortunatelly any browser i use some popup are coming up mentioning that the page is not responsive and it ask me to wait. I chose "WAIT" up to 10 times, but something i'm not able to complete the activity.

Would it be better if i will delete the interfaces instead or un-manage them? The fact that the interfaces are un-managed but present adds any slowness in the system? Is there a different way to unmanage such big number of interfaces?

Thanks and Regards,
Razvan Despa