[c-nsp] how to make all traffic flow through central node in MPLS-VPN?

[Bruce Pinsky]

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Joe Shen wrote:
>> You can do InterAs VPNv4 with mp-bgp between ASBR or
>> mp-bpg between RR.
>> You can find a detailed analysis of Carrier's
>> Carrier architecture on
>> MPLS-VPN VOLII book
>>
> 
> Thanks for the quick help.
> 
> to my understanding, carrier's carrier VPN establish a
> pseudo-carrier over ISP network. What I'm not clear
> is, could it be possible to make traffic route inside
> that VPN flow through a customer's central node ? 
> 
> e.g.
> 
>  site-a \
>          \
>            \
>  site-b ----  MPLS-VPN  -- central_node
> 
>          /
>  site-c /
> 
> 
>  traffic from site_a to site_b will be routed to
> central node at first, then central_node will process
> those traffic after which it is sent to site_be.
> 
> 

It is possible to create hub-and-spoke topologies with L3VPN by using a
unique RD per spoke or through the "Scalable Hub and Spoke MPLS VPN" (aka
MPLS VPN Half-duplex VRF) feature available in recent releases.

http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a0080442090.html

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bep

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