Enable CEF on ISDN 802 Router

Answered Question
May 10th, 2007

I'm trying to enable CEF on 802 ISDN router but cannot find the command?

I have this problem too.
0 votes
Correct Answer by mohammedmahmoud about 9 years 7 months ago

hi,

Unfortunately, it seems that the 802 doesn't support CEF.

Always use "Cisco Feature Navigator":

http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp

HTH, please do rate all helpful replies,

Mohammed Mahmoud.

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mohammedmahmoud Thu, 05/10/2007 - 02:16

Hi,

use "ip cef" in the global configuration.

What is your IOS, please do "show ver" ?

HTH, please do rate all helpful replies,

Mohammed Mahmoud.

mdcarey15 Thu, 05/10/2007 - 02:19

ip cef does not work

I'm running 12.1(3)XG5 and 12.2(37) on the routers.

I'm trying to add the command, "ip verify unicast reverse-path" and it tells me to enable CEF first, so it this IOS must support it

router(config-if)#ip veri u r

% CEF not enabled. Enable first

router(config)#ip cef

^

% Invalid input detected at '^' marker.

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