Hi Jey,

As suggested by Kardik, if you post the config we can have a look at what the problem might be.

In the meantime, check the configuration under #line vty 0 15. Make sure that #transport input telnet or #transport input all is configured. In addition, what out for access lists that might be blocking your connection.

If that is all in order, run Wireshark on your machine and filter for all traffic to the switch "ip.address==x.x.x.x". Check to make sure that the three-way handshake is happening? If not, then find out why but if it is, try using a different Telnet client.

Cheers

Stephen

Hi Jey,

  I think you might have not conigured Line vty configuration

Regards,

Srinadh.

Thanks 2 All

Issued resolved by removing switch config.I think

exec-timeout 0 0

or

session-timeout 5

is creating problem so i try with no exec-timeout 0 0

But it arrive again ,So i delete switch config now reconfig IP all is working ok

Enable the "terminal monitor" so we can see some outputs, run a "sh tcp statistics"

1. then do a "debug ip tcp transactions",

2. try to telnet to an affected switch, capture the debugs and also

3. run these commands:

- sh tcp brief

- sh tcp statistics

- sh line