Re: Backdoors for redundancy

Hi,

I think the backbone link should have a other EIGRP AS number like AS2 or
someting (or is this not allowed?). With another AS you can redistribute
between EIGRP 1 and EIGRP 2 and give the routes a larger metric so the path
to the MPLS cloud is prefferd.

Kind regards,

Maarten Vervoorn

  2011/4/26 SD <networker.ccie_at_gmail.com>

> Hi All,
>
> I need help for the on of the scenario in backdoors.
>
> Please refer to the Diagram in the below link.
>
> 1) there are 4 sites namely 1,2,3,4
> 2) site1,2,3 are connected to MPLS Cloud and have Full Mesh L3VPNs using
> vrf
> SP
> 3) All PE-CE routing protocols are EBGP, AS Override
> 4) Site 4 has to be cascaded behind site 1 as per requirement, hence we can
> say that Site 4 and Site 1 are logically 1 single site w.r.t MPLS Cloud.
> 5) There is a link between Site 3 CE 2 and Site 4 Dist 1 router, which in
> this case becomes a backdoor between 2 sites
>
>
>
> *Requirment *:
>
> 1) We have to keep the backdoor link between 2 routers which is running
> EIGRP to provide Backup Path in case both link between Site1 CE1,2 and
> Site4
> Core1 and 2 goes down so that Site 4 does not goes down in case of dual
> link
> failure.
> 2) Backdoor should never be used as primary Path even communication between
> Site 3 and 4 should be via Site 1 if links between site 1 and 4 are up.
>
>
>
>
>
>
> https://picasaweb.google.com/117764460452023837245/Apr262011?authkey=Gv1sRgCP3sh-Sg1Mee7wE&feat=email#5599920031982032354
>
>
> Rgds
>
>
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Received on Wed Apr 27 2011 - 07:15:02 ART