From: Imal kalutotage (imal.kalutotage@gmail.com)
Date: Fri Sep 30 2005 - 08:05:27 GMT-3
You can use NAT to solve this.
on R1 nat lan network into a subnet X1
on R2 nat ln network into a subnet X2
then from R1 advertise X1 to the outsude
fram R2 advertise X2 to outside.
Then return path will be symatric.
Cheers,
Imal
On 9/30/05, Henk de Tombe <henk.de.tombe@qi.nl> wrote:
>
> Hi Geert,
>
>
> You could setup a GRE tunnel from R1 to R3. The tunnel source address on
> R1
> should have the HSRP VIP address as his source address. The destination
> should be R3. Setup tunnel keepalives on this tunnel as well. Turn on a
> routing protocol on this tunnel to learn and advertise networks. Let HRSP
> track the tunnel interface.
>
> Is R2 becomes master the tunnel will go down on R1, routes learned and
> advertised on R1 will disappear. Since R2 will be the only one from now
> advertising your LAN 1 network, the incoming and outgoing packets will be
> passing R2.
>
> The drawback on this solution is that you manually have to bring the
> tunnel
> up or remove the tracking on your ethernetinterface to get R1 from standby
> to active. The GRE tunnel will give some load on your CPU as well, along
> with possible problems on MTU size (which can be solved though with some
> nice features),
>
> Regards,
> Henk
>
>
>
>
>
>
>
>
> -----Oorspronkelijk bericht-----
> Van: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Namens Geert
> Nijs
> Verzonden: donderdag 29 september 2005 12:03
> Aan: ccielab@groupstudy.com
> Onderwerp: changing incoming routing based on vrrp/hsrp
>
> Hi all,
>
> I am looking for a way to change incoming packets based on which router is
> HSRP active, in the following topology:
>
> | |
> | |
> R1 R2
> | |
> -------LAN 1 -----------
>
>
> Router R1 and R2 are running VRRP or HSRP for LAN 1 If R1 is HSRP master,
> i
> want packets for LAN1 to come in via R1 If R2 becomes HSRP master, i want
> packets for LAN1 to come in via R2 This can be done by changing the
> routing
> metric of the R1 and R2 uplinks or by configuring R1 and R2 in such a way
> that it wil not advertise LAN1 when it is HSRP slave, but how to do this
> automatically ??
>
> Anyone an idea on how to accomplish this..........mmm..there must be a
> way....
>
>
> regards,
>
> Geert Nijs
> CCIE #13729
>
>
>
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