Re: Challenge : HSRP

From: RyanB (rbenigno@xxxxxxxx)
Date: Mon Apr 24 2000 - 15:01:56 GMT-3


   
Would the tunnel interface go into a down state though... I know our
tunnels to our remote sites will stay up even when the sites router is
totally shut off... So I don't think this will work.

It's a good idea though =)

----- Original Message -----
From: "LASSERRE Grégory" <gregory.lasserre@arche.fr>
To: "'CCIELAB'" <ccielab@groupstudy.com>
Sent: Monday, April 24, 2000 7:31 AM
Subject: RE: Challenge : HSRP

>
>
> > -----Message d'origine-----
> > De: LASSERRE Grégory
> > Date: samedi 22 avril 2000 15:01
> > À: 'Maljure, Sanjay'
> > Cc: 'ccielab@groupstudy.com'
> > Objet: RE: Challenge : HSRP
> >
> >
> > Hi everybody,
> > i think we found a winner :
> >
> > Maljure found the solution..!
> > Congratulations !
> >
> > However, here is an extension to this question :
> > what's happen if you are not allowed to use the
> > mapping to R3's s0.1 interface as tunnel destination ?
> > What is the other alternative ?
> >
> > Cheers
> > Greg.
> >
> > Ps: Maljure, thanks to have wait a little bit to give the answer ;o))
> >
> > -----Message d'origine-----
> > De: Maljure, Sanjay [SMTP:smaljure@cibernetworks.com]
> > Date: vendredi 21 avril 2000 20:10
> > À: 'LASSERRE Grégory'
> > Cc: 'ccielab@groupstudy.com'
> > Objet: RE: Challenge : HSRP
> >
> > Hi Gregory,
> >
> > We cannot "track" the s0.1 interface on R1 because even if the PVC
> > between
> > R1 and R3 fails, the line protocol will stay up (because s0.1 is a
> > point-to-multipoint interface)
> >
> > So how about this... (I haven't tried this one but looks promising)
> >
> > Create a tunnel interface on R1 and R3 with the tunnel source as
> > R1's s0.1
> > and tunnel destination as R3's s0.1
> > If the PVC between R1 and R3 fails, then R1 would lose the mapping
> > to R3's
> > s0.1 interface, which means the tunnel interface would go down....
> >
> > So we can "track" this tunnel interface and decrement the priority
> > of R1...
> >
> > Again, I haven't tried this but what do u think?
> >
> > Sanjay
> >
> >
> >
> > -----Original Message-----
> > From: LASSERRE Grégory [mailto:gregory.lasserre@arche.fr]
> > Sent: Friday, April 21, 2000 11:57 AM
> > To: ccielab groupstudy
> > Subject: Challenge : HSRP
> >
> >
> >
> > Hi guys,
> >
> > I've got a challenging question i worked on last week regarding
> > HSRP.
> > The solution is not so trivial, and it took me a while to find the
> > answer
> > (so i hope you won't find the solution too quickly ;o)
> >
> > Just let's go :
> >
> > R1,R2, and R3 routers are full-meshed over FR,
> > using point-to-multipoint interfaces.
> >
> > R1 and R2 are also connected via Ethernet.
> > R3 has an LAN interface (Eth, or Token. As you wish)
> >
> > You are running HSRP between R1 and R2 ; and R1 is your Active
> > router by
> > default.
> >
> > What you want to do is to configure the routers so that
> > R2 becomes the Active router IF and ONLY IF the DLCI between R1 and
> > R3 fall
> > down.
> >
> > Note: You have to run OSPF on the FR cloud (R1, R2, R3 are in Area
> > 0)
> >
> > Good luck,
> > and please don't ridiculate me finding the solution in 3 minutes ;o)
> >
> > Cheers.
> > Greg.
> >
> >
> > ------------------------------------------------------------------------
> > Gregory LASSERRE Tel. : +33 1 69 18 98 53
> > Network Engineer Fax : +33 1 69 28 55 01
> > ARCHE Groupe SIEMENS Std : +33 1 69 18 32 32
> > FRANCE
> >
> > E-mail : gregory.lasserre@arche.fr
> >
> > ------------------------------------------------------------------------
> >



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