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06-21-2016 08:51 AM
06-21-2016 08:51 AM
SSH session to HP 5800 switches hangs
Hello,
We use a couple of Windows 2008 servers as jump boxes to SSH to all our switches, both Cisco and HP. This has been working great for a long time. Recently, for some unknown reason, whenever we SSH to an HP 5800 series switch, the session hangs immediately after I type a command with long output. For example, 'display version' works great but as soon as I type in 'display current-configuration', the session hangs. This is true regardless of which SSH client I use (putty, kitty, SecureCRT) on these two servers. Now the same client can connect to Cisco switches without any issues at all. Also, I can SSH to all the same HP switches from a third server without any problems. All servers are maintained and patched to the same version so no differences exist as far as I know.
I have racked my brain for an explanation but cannot come up with one. The only thing i can think of is that a shared Windows file or library that is used for establishing SSH sessions might be corrupt. Any ideas would be appreciated.
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07-01-2016 03:33 AM
07-01-2016 03:33 AM
Re: SSH session to HP 5800 switches hangs
Hello
Did you try reboot the switch, or update its software?
kind regards
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07-02-2016 02:42 AM - edited 07-02-2016 07:46 AM
07-02-2016 02:42 AM - edited 07-02-2016 07:46 AM
Re: SSH session to HP 5800 switches hangs
Looks like an MTU issue to me.
On first too large packet, SSH session will hang
If
ping -l 1472 <SwitchIP> -f
responds, then this isn't the case.