From: nicholas (nicholas@xxxxxxxxxxxxx)
Date: Sat Mar 09 2002 - 02:03:00 GMT-3
----- Original Message -----
From: "Jeongwoo Park" <jpark@wams.com>
To: "'Edmund Roche-Kelly'" <edr9007@nyp.org>
Cc: <ccielab@groupstudy.com>
Sent: Thursday, March 07, 2002 9:17 AM
Subject: RE: ospf authentication over virtual link
> Thanks for all your replies.
> It cleared my questions completely.
>
> JP
>
> -----Original Message-----
> From: Edmund Roche-Kelly [mailto:edr9007@nyp.org]
> Sent: Thursday, March 07, 2002 7:48 AM
> To: Jeongwoo Park
> Cc: 'ccielab@groupstudy.com'
> Subject: Re: ospf authentication over virtual link
>
>
>
> 1. Area 0. It's the only area on 1.1.1.1 and 3.3.3.3 with "area n
> authentication" configured. The virtual link connects 3.3.3.3 to area
> 0. Authenticating the virtual link is more or less equivalent to
> configuring "ip ospf message-digest-key 1 md5 cisco" on a physical
> interface.
>
> 2. All routers in the area have to have same authentication
> parameters, and e2/0/0 is in area 0.
>
> 3. ATM 2/0.20 is in area 1. There's no authentication configured for
> area 1.
>
> Jeongwoo Park wrote:
> >
> > hi all
> > I found this link http://www.cisco.com/warp/public/104/27.html on Cisco
> > website.
> > It is MD5 authentication over virtual link
> > According to the diagram, there area 3 areas--area0,1,and 2
> > Now,
> > Question 1 is what area it is securing based on that config? Is it area
0
> or
> > 1?
> >
> > Question 2 is what "ip ospf message-digest-key 1 md5 cisco" is doing
under
> > interface e2/0/0 on router1.1.1.1?
> > Question 3 is why there is no "ip ospf message-digest-key 1 md5 cisco"
> under
> > interface ATM2/0.20 on router3.3.3.3?
> > Thanks in adv.
> >
> > JP
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