Connectrix MDS: Unable to SSH to Switch

Summary: Unable to SSH to switch

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Symptoms

Unable to SSH to the MDS switch, receive the following error:

"Remote Side unexpectedly closed network connection"

SSH from working switch to nonworking switch produces the following error:

"SSH_exchange_identification:read: Connection reset by peer"

Cause

Possible stuck SSH process

Resolution

Workaround:
  1. Remove and reenabling SSH to restart SSH services and recover connectivity.
  2. Connect to console port, run the following:
Disable SSH:
conf t
no feature ssh  (wait a few mins)

Re-enable SSH:
conf t
feature ssh
  1. Verify SSH connectivity to Mgmt0 over network or PuTTY.

If it is still failing to connect SSH, it may be necessary to remove and re-create RSA key.
  1. Connect to console port and run the following:
config t
no feature ssh
no ssh key rsa 1024    <-- wait a few minutes

Re-enable SSH:
config ssh key rsa 1024
feature ssh

Affected Products

Connectrix MDS-9132T

Products

Connectrix MDS-9132T
Article Properties
Article Number: 000055655
Article Type: Solution
Last Modified: 23 Oct 2025
Version:  5
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