Is there any command etc available to find out how many concurrent sessions are via a Cisco2821 router? And if yes, is there also a option to find out what is/was the maximum during the day?

After lot of searches in CCO I cannot find a real explanation for the command:          no spanning-tree optimize bpdu transmissionwhat a CCIE did configure (or it was default) on all our switches (backbone 650x and workgroup switches). - Is somebody...

We have on different locations 650x switches. All of them can handle 1024 MAC-addresses. Most of them have the command "spanning-tree extend system-id", but on a new location Spanning-Tree was implemented without using "spanning-tree extend system-id...

On a site with about 300 users (factory 24 hours on 7 days a week) we will establish a new Cisco based network. As backbone switches we want to stack in the DataCenter and the Backup room 2 3750G-12S to each other. We have about 60 servers in total (...