I have 4 Catalyst 2960S, and they have the same problem.
The CPU usage is 60% before I telnet them.
It fell to 20% when I using telnet to login. And raised to above 60% after logout.
This is the output of 'show proc cpu' when I login.
This is the output of 'show proc cpu' 2 mins later.
And the traffic chart will like this.
How can I to solve this problem?
The hardware & software version is:
WS-C2960S-48TS-L 12.2(53)SE1 C2960S-UNIVERSALK9-M
Many thanks for any comments.