Re: cat 3550 with strange 'show running-config' message
this is a normal beheviour of IOS
When configuring access to the router by privilege levels, a common issue is that the show running or write terminal command is configured at or below the user's privilege level. But, when the user executes the command, the configuration appears to be blank. This is actually by design, as explained below.
The write terminal / show running-config command shows a blank configuration. This command displays all of the commands that the current user is able to modify (in other words, all the commands at or below the user's current privilege level). The command should not display commands above the user's current privilege level because of security considerations. If it did, commands like snmp-server community could be used to modify the current configuration of the router and gain complete access to the router.
The show config / show start-up config command displays a full configuration but does not truly show the actual configuration. Instead, the command simply prints out the contents of NVRAM, which happens to be the configuration of the router at the time the user does a write memory.
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