is-is requirments

Unanswered Question
Sep 14th, 2009

Hi, I am taking BSCI course. I am try to find minimum requirement to run isis on old 2600 routers I have for a lab. I have been looking around Cisco's site, searched is. Can find a lot of info about is but not requirements to run. I can enable router isis but it will not accept network command. Below is what my routers have.

Thanks, Doug

System image file is flash:aaa0224.bin

32K bytes of non-volatile configuration memory.

8192K bytes of processor board System flash (Read/Write)

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Giuseppe Larosa Tue, 09/15/2009 - 02:07

Hello Doug,

>> I can enable router isis but it will not accept network command

I would be surprised if it would be supported:

IS-IS doesn't use network command

on interface configuration where you want to run is-is use

int type x/y

ip router isis

do it on all interfaces including loopbacks

Hope to help


REDDOUG53 Tue, 09/15/2009 - 15:57

Setup from lab book;

router isis

net 49.0001.1111.1111.1111.00

int fa0/0

ip router isis

After I enable isis on the router, when I try the next line is were I have my problem. I get ^ under net as unrecognized command.

Thanks, Doug

Laurent Aubert Tue, 09/15/2009 - 18:31

Hi Doug,

I saw you have only 8M of Flash so you can use only 12.0 version but you need service-provider or enterprise-plus feature pack which both require 24M of RAM.



REDDOUG53 Thu, 09/17/2009 - 15:04

Thanks for the info. Would you know where I could find that kind of information? I have been looking over Cisco's site. I am thinking it is because it is older not much ifno is available.


Giuseppe Larosa Wed, 09/16/2009 - 02:32

Hello Doug,

in some old releases like 12.0 you need to enable clns routing to use the net command because the net is actually a CLNS address given to the node.


conf t

clns routing

router isis


This should help

hope to help



This Discussion