console access and ssh slowness
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.
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.
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Comments
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tiersten
Member Posts: 4,505
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...