Wednesday, September 7, 2011
Banner Exec $(Tokens)
Tokens are variables that can display things like hostnames, which line has been connected to, etc.
There are several banner types that can take advantage of tokens, but for now, I want to configure banner exec.
When I telnet into R2 from R1, I want R2 to display its hostname, which line I am connecting to, the line description and domain name.
I need to add some configuration first:
R2(config)#ip domain-name stupidtroutertricks.com
R2(config)#line vty 0 4
LINE One text line describing the terminal's location
R2(config-line)#location VTY LINE
The banner exec tokens are self explanatory. The only one that might leave a doubt is $(line-desc). This variable calls the text associated with the location command under the line configuration.
R2(config)#banner exec ^You are connected to $(hostname) on line $(line), $(line-desc) at $(domain)^
Here's the telnet in action:
Trying 10.1.12.2 ... Open
User Access Verification
You are connected to R2 on line 194, VTY LINE at stupidtroutertricks.com
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Very useful if port has non standard parameters (baud rate, flow control, etc).ReplyDelete
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