Hello All,

I have a 3020 running 7.2.4 that is failing to respond to SSH commands when they’re sent one at a time. I can ssh in as root and get a shell via putty or ssh. But if I try to send an “uptime” command I get either “FATAL ERROR: Server unexpectedly closed network connection” (from plink) or “Connection to carbon-b closed by remote host.” from ssh.

Also, when I’m logged in interactively, I see lots of this blowing across the console:

carbon-b> receive signals: rsh protocol failure in circuit setup. 300 received

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

receive signals: rsh protocol failure in circuit setup. 300 received

receive signals: rsh protocol failure in circuit setup. 300 received

receive signals: rsh protocol failure in circuit setup. 300 received

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

Try again.

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

Try again.

Try again.

Try again.

Try again.

Try again.

Try again.

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

Try again.

Try again.

Try again.

Try again.

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

Try again.

Try again.

Try again.

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

Try again.

Try again.

Try again.

Try again.

Try again.

Try again.

receive signals: rsh protocol failure in circuit setup. 300 received

We have lots of processes (monitoring, alerting, scripted processes) that touch this box via non-interactive SSH, is each of these errors some failed attempt to connect?

If I understand the inner workings correctly, pretty much all admin traffic on a filer channels into an internal RSH pipe. Are there different pipes for interactive and non-interactive SSH? I have tried stopping and restarting SSH (options ssh.enable off and on). Also RSH (options rsh.enable off and on). No love.

Anyone have any ideas?

Randy

Seattle