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Home > Success Center > Archive > 2017December29 - Deletes > Cisco IOS devices randomly fail to download configs

Cisco IOS devices randomly fail to download configs

Created by Bill Corgey, last modified by Jessica Solis on Dec 29, 2017

Views: 756 Votes: 0 Revisions: 5

Overview

A device can be downloaded via NCM (either through jobs or manually) only once. Generally, when SSH is set as the execute script protocol.

Environment

All NCM versions

Cause 

When the username or password prompt is sent, there are occasionaly ASCII characters. For example, ÿýUsername: or Username: ÿúÿð.

These characters are real and although they may not be visible in Putty, they are there. These characters are not properly recognized by NCM that causes the aborted connection.

Resolution

Upgrade to NCM 7.4 or later, or:

  1. Make a copy of the template being used, such as the Cisco IOS in most cases.
  2. Add the following lines to the copied device template
    <Command Name="CustomUsernamePrompt" Value="Username"/>
    <Command Name="CustomPasswordPrompt" Value="Password"/>
  3. Set the Device Template that was copied so it is not eligible to be selected as Auto Determine.

 

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