From: leigh.bichard@btinternet.com
Date: Tue Jul 01 2003 - 05:19:46 GMT-3
The question required different md5 passwords between FR multipoint devices within the same eigrp as. You can only apply one authentication type per interface per eigrp as. If you create tunnels you can apply the required authentication
Leigh
> from: Pita40 <pita40@hotmail.com>
> date: Mon, 30 Jun 2003 20:31:00
> to: leigh.bichard@btinternet.com
> subject: Re: IPexpert RIP lab 8
>
> Why did you use tunnel in solving this problem ?
> Please help me understand your solution.
>
> P
> ----- Original Message -----
> From: "Leigh Bichard" <Leigh.Bichard@btinternet.com>
> To: <ccielab@groupstudy.com>
> Sent: Sunday, June 29, 2003 12:46 PM
> Subject: IPexpert RIP lab 8
>
>
> > This question has been touched on in the archives but I can't seem to find
> a
> > final answer.
> >
> > The RIP lab 8 of the v4.0 IPexpert workbook asks to use diffferent
> > authentication keys between 3 routers on a FR multipoint network. This can
> be
> > done using the config below and it seems to work - full connectivity etc.
> When
> > you check the sample solution - they use some crazy policy routing to
> direct
> > the updates and I can't see why.
> >
> > The only thing I can think of is that they use the same unnumbered address
> so
> > the core will send updates for R5 to R6 and vice versa - which is
> ineffecient.
> >
> > Thanks
> >
> > Leigh
> >
> >
> > Config on multipoint core - r2
> > ========================
> >
> > interface Tunnel5
> > description Tunnel for RIP to R5
> > ip unnumbered Serial0.256
> > ip rip authentication mode md5
> > ip rip authentication key-chain R2_to_R5
> > tunnel source Serial0.256
> > tunnel destination 150.50.100.5
> > !
> > interface Tunnel6
> > description Tunnel for RIP to R6
> > ip unnumbered Serial0.256
> > ip rip authentication mode md5
> > ip rip authentication key-chain R2_to_R6
> > tunnel source Serial0.256
> > tunnel destination 150.50.100.6
> > !
> > router rip
> > version 2
> > redistribute connected route-map CONNECTED
> > redistribute static metric 1
> > passive-interface Serial0.256
> > offset-list 2 in 4
> > network 150.50.0.0
> > no auto-summary
> >
> >
> > Config on r5
> > ============
> >
> > interface Tunnel5
> > description Tunnel for RIP to R2
> > ip unnumbered Serial0
> > ip rip authentication mode md5
> > ip rip authentication key-chain R5_to_R2
> > tunnel source Serial0
> > tunnel destination 150.50.100.2
> > !
> > router rip
> > version 2
> > redistribute connected route-map CONNECTED
> > passive-interface Serial0
> > network 150.50.0.0
> > no auto-summary
> >
> > Config on r6
> > ============
> >
> > interface Tunnel6
> > ip unnumbered Serial0
> > ip rip authentication mode md5
> > ip rip authentication key-chain R6_to_R2
> > tunnel source Serial0
> > tunnel destination 150.50.100.2
> > !
> > router rip
> > version 2
> > redistribute connected route-map CONNECTED
> > passive-interface Serial0
> > network 150.50.0.0
> > no auto-summary
> >
> >
> > _______________________________________________________________________
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