From: Chris Lewis \(chrlewis\) (chrlewis@cisco.com)
Date: Wed Jul 13 2005 - 23:25:20 GMT-3
ISIS Md5 authentication is supported in 12.2T and is certainly fair game
for the lab. This confusion often arises as some documentation is
specific to the S train where a lot of ISIS features got introduced, and
the S train only runs on 7200 and above. However, using ceature
navigator (http://www.cisco.com/go/fn ) for ISIS MD5 will show a 12.2T
release available.
Chris
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Arun Arumuganainar
Sent: Tuesday, July 12, 2005 11:02 AM
To: Gustavo Novais; ccielab@groupstudy.com
Subject: Re: ISIS interpretation question.
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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