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From: Max on 6 May 2008 14:54
Hi everyone.

I have a problem concerning 'IP CLASSLESS' on cisco routers
I have quite a lot of vpn tunnels with IP CLASSLESS enabled on the
router and some that it is not enabled.
i have noticed that there are some application that i'm using that are
not working fine when it's not enabled.
i've tried to enable it on those routers but it doesn't seem to change
anything.
i typed 'IP CLASSLESS' and when i look in the running config it's
nowhere

for example:
cisco 871w with IOS Version 12.4 = no IP CLASSLESS = not working ( but
i don't seem to be able to enable it)
cisco 851 with IOS Version 12.3 = IP CLASSLESS enabled = works fine

any explanation?
From: Peter on 7 May 2008 04:46
Hi Max,

> I have a problem concerning 'IP CLASSLESS' on cisco routers
> I have quite a lot of vpn tunnels with IP CLASSLESS enabled on the
> router and some that it is not enabled.

Somewhere around IOS V12.0 the DEFAULT for alI versions of IOS was
changed from CLASSFULL to CLASSLESS. As the DEFAULT does not always
show up, this may explain why it appears to be not working.

If your Router is in CLASSFULL mode, then you would not be able to
configure a Subnetted mask on any command that needed it. If you CAN
configure it, then its in CLASSLESS mode.

Cheers.......................pk.

--
Peter from Auckland.
From: Merv on 7 May 2008 04:46

AFAIK these commands are a special case of what is displayed by show
running-config; typically default commands are not displayed.

Both of the commands "ip classless" and "no ip classless" will show up
in output of sh running-config.

At least this is the behavior with IOS 12.3

From: Merv on 7 May 2008 08:04

Please post output of show version from the 871W

From: Max on 7 May 2008 09:02
Thanks everyone!
I thought that would be the problem why some program aren't working
through the VPN,
but then i guess it's not... i'll have to look somewhere else. It's
because it's mainly the
only difference i could find in the 2 configs...
thanks a lot for yout help!!
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