[c-nsp] Sup720-3bxl - mpls explicit-null-labels recirculation

[Saku Ytti]

On (2008-02-19 10:55 +0100), Christoph Loibl wrote:

Hey,

> The documentation says that packet re-circulation is needed to pop  
> the explicit null label off the top of received packets.
> 
> Do I need to turn on "mls mpls tunnel-recir" for this to work  
> correctly? The documentation is not very clear what this command  
> really does and what it is actually needed for.

It'll recirculate automatically. From:
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t13/feature/guide/ftgreips.html

'
The mls mpls tunnel-recir command must be configured on the provider equipment (PE) DMVPN hub if customer equipment (CE) DMVPN spokes need to "talk" to other CEs across the MPLS cloud.
'

This might apply when egress IP ACL is needed in above situation too. Anyhow, not
relevant to your situation.

> Does the packet-recirculation mean that I simply half the pps the pfc  
> can handle given every packet received contains an explicit null  
> label and needs recirculation? Packets that don't need recirculation  
> are not effected at all?

Correct.

-- 
  ++ytti