Banner token line-desc

[tramseyG4S]

I'm using a Catalyst 9300 series with IOS XE 17.06.05. Inside of "banner exec" I'm trying to use variables / tokens to confer that info to the users. Specifically, i'm trying to use $(line-desc). Example: "banner exec * You are logged in on line $(line) of $(line-desc). *"

Where I expect a result like "You are logged in on line 0 of Console." or similar.

However, I get "You are logged in on line 0 of ." And said, "Ok, well, that's not what I expected." 

When I looked closer at Cisco's documentation it stated that $(line-desc) is a "User-specified description of the Line". So I was like, "Oh, ok just add a description line to define the text to replace the token with." Except when I look at either Line Con 0 or Line VTY 0 15 - there is no description command for them. Do I have to define this text elsewhere or where do I specify the text that I want to replace the token when logging in via serial console or SSH/VTY?

[tramseyG4S]

I did some further experimentation this morning. I typed in all the banner tokens listed then additionally some I didn't expect to work.

banner exec *

You are logged in on line $(line) of $(hostname) on $(line-desc) in $(domain). With ($peer-ip) and a gateway $(gate-ip) at $(mtu) mtu.

*

It results in: "You are logged in on line 0 of <switch name> on  in <domain>. With $(peer-ip) and a gateway $(gate-ip) at $(mtu) mtu."

So to me it appears that $(line-desc) is a supported token compared to peer-ip, gate-ip, and mtu which just get ignored and taken as literal text. It's just that $(line-desc) has no value to display. It's just that my ablity to utilize Google to find out where to define the text for the $(line-desc) token fails me.

If anyone knows where to define the description for "line con 0" or, say, "vty 0 15" I'd appreciate that. Thank you.

[tramseyG4S · Accepted solution]

For anyone that ends up on this in the future from a google search - I found the answer.

$(line-desc) is configured with the command: location

So, enter config mode, switch to your line: con 0 or line vty 0 4 (or 15, or whatever). And then type: location <arbitrary string> And you'll get output that differs based on it.

"You are logged in on line 0 of <switch name> on <location string> in <domain>."

I suppose you could -literally- name the physical location of the device, but that seems kind of odd to me. Anyway, mystery solved.