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Re: ISIS MD5 authentication question? [7:104551] posted 11/16/2005
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This is exactly how ISIS auth. works!

Check out Doyle and also a really good article from Netmasters.

First time, drives you nuts, ain't it?   ;->

  --------------------------------------------------------------------

  From:  "Venkataramanaiah.R" 
  Reply-To:  "Venkataramanaiah.R" 
  To:  cisco@xxxxxxxxxxxxxx
  Subject:  Re: ISIS MD5 authentication question? [7:104551]
  Date:  Wed, 16 Nov 2005 11:00:49 -0500
  >Just one relation question...
  >
  >i am running L2 only  adj everywhere.. and i use domain password
  under
  >router isis.
  >
  >If there is a mismatch in password, IOS reports the mismatch, but it
  >does not prevent the routes from getting installed? Is this a bug or
  >am i wrong in understanding of isis auth?
  >
  >TIA
  >-Venkat
  >
  >On 10/20/05, Victor Cappuccio  wrote:
  > > Thanks for the Update Chris..
  > >
  > >
  > > Chris Lewis wrote:
  > >
  > > > ISIS MD5 authentication has been supported since 12.2(13)T as
  > > > specified below, and te routers you'll use in the lab are
  capable of
  > > > having it configured on them..
  > > >
  > > >
 
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios122s/122snwft/release/122s14/ftismd5.htm
  > > >
  > > > */Victor Cappuccio /* wrote:
  > > >
  > > >     Hello,
  > > >
  > > >     Level 1/2 mode is the default configuration in Cisco
  Routers, for
  > > >     general authentication are based if you are L1 or L2
  connection,
  > > >     for L2
  > > >     is a domain Password in router ISIS.. For L1 is an Area
  Password -
  > > >     You
  > > >     must take in account your topology .. also we can set up
  the
  > > >     passwords
  > > >     on specifics interface . If you do not specify a level, the
  > > >     default is
  > > >     Level 1. By default, authentication is disabled. All
  Authentication
  > > >     right now in ISIS is Clear Text, I think that the IOS
  Version that we
  > > >     are having in the lab does not support MD5, but the
  configuration for
  > > >     MD5 in Service Providers IOS is the same as we do in EIGRP
  or RIPv2
  > > >
  > > >     HTH
  > > >     Victor.
  > > >
  > > >
  > > >     Cisco Nuts wrote:
  > > >
  > > >     > Hello:
  > > >     >
  > > >     > For ISIS MD5 authentication, is it ok in the Lab to just
  > > >     configure it
  > > >     > under the interface for either level-1 or level-2 -
  depending on
  > > >     the
  > > >     > isis type.
  > > >     >
  > > >     > In the config. guide, it clearly has it under the router
  isis also.
  > > >     >
  > > >     > And same for clear text authentication too.
  > > >     >
  > > >     > Are both reqd or just one?
  > > >     >
  > > >     > Thanks.
  > > >     >
  > > >     >
  > > >
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