Re: Backdoors for redundancy

Hi,

If your backdoorlink is EIGRP AS2 it has to be redistributed to AS1 so also
be external routes. If you higher the metric of those routes it will be less
prefered then the external routes from the MPLS cloud

Kind regards,

Maarten Vervoorn

2011/4/27 SD <networker.ccie_at_gmail.com>

> Hi,
>
> That is allowed but PE-CE routing protocol is BGP hence routes from MPLS
> Cloud will be redistributed into EIGRP hence they also become External
> routes, so i will not be able push the traffic to MPLS Cloud.
>
> Rgds
>
>
> On Wed, Apr 27, 2011 at 8:14 AM, Maarten Vervoorn <mr.vervoorn_at_gmail.com>wrote:
>
>> 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 - 08:52:21 ART