how many vty lines are there?

[rjackson]

I have a scenario that requires I set login and password protection on telnet access. Typically I go to line vty 0 4 and set login and a password. On 2500s I use 0 4 but I'd seen more lines on other routers. So I tried higher numbers and the 2500 let me put in line vty 0 197. In the conf gi display it separates the 0 4 and 5 197 vty lines but they all show.

How many vty lines are there that need to be protected? Did I created additonal ones above the default when I used 0 197?

[thisisshanky]

I think, the total number is actually dependent on the hardware you are using. By default all routers have 5 vty lines (factory defaults). Unless you configure the remaining available lines, there is no need for them to be protected. You created additional lines, when you specified the number 0 197. Hence you will need to protect those lines, ones they are created. They can also be removed using the command "no line vty".

Router groups 0 to 4 and 5 through 197 separately.

If you take a 1700 router, the total number of lines you can configure is upto 15. So the number of lines, varies for diff hardware platforms.

HTH

[rjackson]

Thanks for the response.

It seems like there is a mix out there. I was able to delete all but vty 0 4 on a 2500 running 12.2. On a 2612 it only had 0 4 but on a 2620 it had 0 15 and would not let me delete any of them.

I guess you just need to check how many lines there are before you set the login and password so you get them all and dont create any extras.

Thanks again

[thisisshanky]

That sounds strange, I just checked on a 2610, and it did have 15 lines, default was 5. I created 10 more lines using command (line vty 0 15). It created two groups, 0 through 4 in one group and 5 through 15 in another group (listed separately on the configs).

When I gave a "no line vty 5 15", it removed all of them.