console access and ssh slowness

fonque

I have been playing around with ssh at work, and I have noticed that when I console into a switch, then ssh into another switch from the switch with the console connection, the ssh connection is very very slow. There is a pronounced delay between typing characters and getting any response from the "ssh'ed" switch.

However, if I ssh directly into the switch, there is no lag. There is also no lag if I ssh into a switch, and from that switch ssh into another switch.

I only have the issue if a console connection is involved in the chain.

Is this normal switch behavior? I have been able to repeat this using several different models of switches at work and at home.

tiersten

Some interaction between the slow serial port used for the console and the nature of a SSH connection? The CPU in a switch isn't particularly fast and encryption is a fairly CPU intensive task. I wouldn't worry too much about it to be honest...