[c-nsp] Compression on MPLS

[Oliver Boehmer (oboehmer)]

> i m using a cisco 3662 for the PE (cisco 3660 (R527x) processor
> (revision 1.0) ) IOS (tm) 3600 Software (C3660-P-M), Version
> 12.2(27), RELEASE SOFTWARE (fc3) 
>
> the CE is a cisco 1750 (MPC860)
> with IOS (tm) C1700 Software (C1700-Y-M), Version 12.1(16), RELEASE
> SOFTWARE (fc1) 

Hmm, strange, this should work. Can I see the full config (pls send it unicast). I still find it strange that your static routes to the vrf interface disappear when you enable compression on the PE. 
Does it work if you put the interface into the global routing table for a test?

> i hvnt yet tested out the 12.3 series ... which one do u recommend

12.3(9a) or 12.3(10a) are safe bets..

	oli

> On Sun, 05 Dec 2004 Oliver Boehmer(oboehmer) wrote :
>> 
>>>  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
>>> 
>> 
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