[c-nsp] number of VRFs on Cisco Cat/7600

[Adam Armstrong]

Marlon Duksa wrote:
> I found this in Cisco documentation under the title "OSPF Support for
> Unlimited Software VRFs per
> Provider Edge Router" :
>
> "The OSPF Support for Unlimited Software VRFs per Provider Edge Router
> feature allows for an
> approximate range of 300 to 10,000 VRFs, depending on the particular
> platform and on the applications,
> processes, and protocols that are currently running on the platform."
>
> 10,000 VRF?
>
> 7600/Cat have a limitation of 4K internal VLANs and each L3 VPN (MPLS) takes
> one of those, up to 512 L3 VPNs. After 512 L3 VPNs it takes 2 internal
> VLANs.
>
> This would max out L3 VPNs on 7600/Cat to less than 3K. I assume that L3 VPN
> = VRF.
>
> Does anyone know how they arrived to this 10K VRFs number? It just does not
> make sense.
Unlimited *software* VRFs?

adam.