[c-nsp] Two HUBS-Location Specific Spokes-Redundant to each other

[Fernando Garcia Fernandez]

Hi Yaswanth

I haven’t made it in real life, but doesn’t seem difficult.

What I would do is publish the default route with a different community in each hub (i.e. 65000:1 in one hub and 65000:2). In each spoke, depending of what you want use the community to set a local preference.

i.e. 

in the hub:

router bgp 65000
network 0.0.0.0 mask 0.0.0.0
neighbor 10.0.0.2 remote-as 65000
neighbor 10.0.0.2 send—community
neighbor 10.0.0.2 route-map NY out

route-map NY permit 10
set community 65000:1


in the spoke:

router bgp 65000
neighbor 10.0.0.1 remote-as 65000
neighbor 10.0.0.1 route-map hub in

route-map hub permit 10
match community 65000:1
set local-preference 130
route-map hub permit 20
match community 65000:2
set local-preference 90

Regards, Fernando

El 26/07/2013, a las 07:41, vasu varma <ypkcar at gmail.com> escribió:

> Hi Lumbis,
> 
> Thanks for your response.
> 
> Its not all about latency, latency may vary depending on the backbone
> utilization irrespective of closest location.
> 
> I want in such a way that east locations should prefer the default route
> from East HUB with West HUB acting as secondary and west locations should
> prefer the default route from WEST HUB with EAST HUB acting as secondary.
> 
> One location may be equally destined in terms of latency or distance but we
> should be able to configure as we desired.
> 
> Regards
> Yaswanth
> 
> 
> On Tue, Jul 23, 2013 at 8:32 PM, Pete Lumbis <alumbis at gmail.com> wrote:
> 
>> If by "closest" you mean "lowest latency" you probably want to look at
>> something like PfR to do this dynamically for you.
>> 
>> 
>> On Tue, Jul 23, 2013 at 1:48 AM, vasu varma <ypkcar at gmail.com> wrote:
>> 
>>> Hi Team,
>>> 
>>> I have a requirement in such a way that there are two HUB's, one in
>>> Newyork
>>> and other in LOS Angeles. The spoke locations will access the HUB location
>>> whichever is closer geographically and the other acts as the backup for
>>> that particular site.
>>> 
>>> If both the HUB's injects default route into the cloud, how can I
>>> configure
>>> the iBGP attributes to select the best path based on the closest physical
>>> location.
>>> 
>>> Our's is a MPLS cloud with multiple customers sharing the same Infra.
>>> 
>>> Can someone assist me with the solution approach and most importantly the
>>> changes that I need to do in my network.
>>> 
>>> Regards
>>> Yaswanth
>>> _______________________________________________
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>> 
>> 
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