[c-nsp] PFC3 and VPN CAM

[David Freedman]

All mine (Sup720-PFC3BXL running 12.2(18)SXF3 ADVIPSERVICES are populated.

Dave.

Saku Ytti wrote:
> After TAC and Account Team have been unable to get answer to my question
> using cisco internal channels. I'd like to check if someone in community
> is experiencing same symptoms, who could perhaps add pressure, or
> someone from cisco could pick this up and find whats going on.
>  The TAC case is/was 603584313 and was opened 1.5months ago.
> 
> To simply the issue lets just look at two boxes that have exact
> same hardware, same IOS and very similiar configuration.
> When issuing 'show platform hardware capacity pfc' I can see that
> other one of them is populating VPN CAM and other one is not.
> 
> TAC suggested several reason why this could happen, we investigated
> them all, and could not:
>   a) get VPN CAM unpopulated in the other box
>   b) get VPN CAM populated in the other box
> 
> Currently there is no business impact, but I expect that if I had
> more considerable amount of traffic, I should notice and perhaps
> have serious problems due to unnecessary recirculation.
> 
> Could someone running PFC3 and VRF's on more than one box 
> check the above command to verify if VPN CAM is being
> consistently either always populated or unpopulated?
> 
> And then second one for the architecture inclined people.
> Could it not be possible to avoid recirculation of MPLS
> explicit-null packets that are single label deep if VPN-CAM
> would have entry for 'Internet VRF', that is special case
> where single deep explicit-null would be considered VRF label
> for 'Internet VRF'. With my limited knownledge of PFC3 
> it would appear possible, but perhaps it would also mean
> loosing the EXP value?
> 
> Thanks,