[c-nsp] Compression on MPLS

[Oliver Boehmer (oboehmer)]

>  couldn't compression be done in CEF process-path?
> CEF: so the labels could be determined from the CEF table
> process path: still punted, so that the CPU can do it's compression
> task? 

Ack, and this is also what should happen, at least in code which has the new MPLS process path.. I just tested this, and both 12.2M and 12.3M on the PE work with "compress stac" enabled on the PE-CE VRF interface. So I'm currently unable to reproduce your problem. Which platform are you using as PE and CE? 
What doesn't work is "compress stac" on the MPLS interface (i.e. PE-P interface).

>   on 12.2M being old: it's the youngest GD code ;)

Sorry, relatively "old" is the feature set which is in 12.2, 12.2M was released in 2001, and no or only few new features got into it since. It has the new MPLS process path (since 12.2(12)), though.

	oli
 

> -----Original Message-----
> From: Oliver Boehmer (oboehmer) [mailto:oboehmer at cisco.com]
> Sent: Saturday, December 04, 2004 1:08 PM
> To: kerwin m; signal at shreve.net; cisco-nsp at puck.nether.net
> Subject: RE: [c-nsp] Compression on MPLS
> 
> 
> 
>> I have a FR backbone on which we are running MPLS so you can say its
>> MPLS on FR , we are trying to run compression (stac) on the points
>> between the CPE & the PE but no sooner do we run STAC the routes
>> dissappear from the VRF table ,any idea on how to run compression in
>> MPLS
> 
> unless something chanaged quite recently (but you're running 12.2M, so
> rather old code), stac compression will punt the packet to the process
> path, which usually breaks cef/mpls-vpn.
> 
> 	oli
>