There is exactly one route per site(carrying the site specific information
like label-base etc.) in case of BGP L2 VPNs. In case of BGP L3 VPN, there
*could* be multiple L3 routes per site. So in terms of the routing
information to be carried in the PEs and propagated to other PEs, your
observation on scaling is correct.
-Manoj
At 12:27 AM 12/11/2001 +0800, Eric So wrote:
>In JUNOS 5.1 implementation on layer 2 VPN, it is required
>to configure both vrf-export and vrf-import under routing-
>instance hierachy. It was said it is used to define how routes
>are exported and imported from and to the VRF tables between
>PE routers.
>
>I am wondering what kind of routing information it would carry...
>I suppose it is a layer-2 VPN that the PE wouldn't have any
>other routing tables... that helps L2VPN scales better than
>L3VPN...
>
>Do I miss anything?
>
>-S
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