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Cisco Bug: CSCup31447 - SSH to IOS XR 5.1.1+ may fail if using Putty client

Last Modified

Jun 06, 2019

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

5.1.1.K9SEC

Description (partial)

Symptom:
SSH session breaks with following error message if long output is sent from IOS XR to Putty client:
Disconnected : received unsollicited SSH_MSG_CHANNEL_FAILURE

Conditions:
Putty client is used to connect to ASR9k or other IOS XR router.

Related Community Discussions

XR 5.1.1 and Putty
I'm having (repeatable) trouble SSH'ing into a ASR9001 running v5.1.1 u sing PuTTY (6.3). Anyone else?   I've been using PuTTY for years without seeing this issue, so I'm  thinking 5.1.1 may be acting differently.   I can make the session fail easily by logging in and spacing through a 'show run'. It always fails with the connection breaking part way through the listing with  "Disconnected: Server protocol violation: unexpected SSH2_MSG_CHANNEL_FAILURE packet"   The same PuTTY client works fine into ...
Latest activity: Mar 07, 2019
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Related Community Discussions
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