From: Arun Arumuganainar (aarumuga@hotmail.com)
Date: Tue Jul 12 2005 - 13:02:21 GMT-3
I think ISIS MD5 Authentication is not supported on T or Mainlines ( 12.2T
or 12.3T) . Cisco Documentation says it is supported on 7200 and above .
I think its has been added to IOS very recently. For CCIE exam perspective
we can forget about ISIS MD5 authentication( Anybody : Pls correct me if I
am wrong ) !!!Hence when ever you see ISIS authentication Pls. interpret it
as Plain Text .
Thumb Rule :
For EIGRP and ISIS : We have no choice ( MD5 For EIGRP and Txt Auth for
ISIS is the only option available)
For OSPF : We are free to use both plain text or MD5 . But pls look for
secure and other related terms . If it is there is any , we need to
Mandatoryly do MD5
By the way you can use any password unless and until it is explicitly
specified in the question sheet.
This is my 2 cents .
Thanks and Regards
Arun
----- Original Message -----
From: "Gustavo Novais" <gustavo.novais@novabase.pt>
To: <ccielab@groupstudy.com>
Sent: Tuesday, July 12, 2005 8:58 PM
Subject: ISIS interpretation question.
> Hello
>
> Having a doubt on IpExpert Lab 19
>
> They mention on ISIS task to " Configure the support for IS-IS password
> authentication between R1 and R2"
>
> What should I read from it?
> Should I configure "isis password XXXXXX" on the interface, but they do
> not provide me with any password.
> Should I configure the support for authentication? Since 12.2.(13)T
> (which is scope of the lab) there is the possibility of having text or
> md5 auth with ISIS. Configuring the "support" may be interpreted to
> configure "isis authentication text|md5" ?
>
> This interpretation thing may be a killer on the lab. I'm just trying to
> get some guidelines on how to do it.
>
> I think many of the answers to this question will be "Ask the proctor!!"
> but nevertheless I'd like to ask to group...
>
> TIA
> Gustavo
>
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