Adding virtual terminal (vty) lines

Unanswered Question

I've read in multiple places that you can increase the number of virtual terminal lines by typing "line vty [some high number]". When I try on a 2511 with IOS 12.2 installed, it responds with an error: "Invalid input detected". When I try "line vty ?", it responds with "<0-4> First Line number". When I try "line vty 0 ?", it responds with "<1-4> Last Line number". How can I get more than 5 virtual terminal lines? Do I have to enable protocol translation or something? If so, how do I do that?

Thanks in advance,


I have this problem too.
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glen.grant Mon, 02/19/2007 - 14:50

You can't on a ancient box like that , 4 is max , most newer routers have up to 15 lines . not really sure why you would ever need more than 4 at 1 time anyway .

It says in that a 2500 series router can have up to 182 virtual lines. I also have access to 2621 series routers which also have 182 virtual lines available. The reason I need so many is that I'm using udptn to multiplex a single serial line so that multiple tcp connections can listen to the serial data. I've configured udptn on the serial line to send data to the broadcast address. Now I want to connect to the router on multiple vty's and listen to the broadcast data.

bogdan.sass Tue, 02/20/2007 - 02:56

As far as I remember, the number of available vty lines depends on the IOS that runs on that machine. So you might be able to get more lines by upgrading the software.


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