[c-nsp] CBWFQ-LLQ on PPPoE Virtual Templates

[Oliver Boehmer (oboehmer)]

Gregory Boehnlein <mailto:damin at nacs.net> wrote on Thursday, April 10,
2008 3:13 PM:

>>> Hello,
>>> 	We have a 7206 running (C7200-IK9S-M), Version 12.3(20), RELEASE
>>> SOFTWARE (fc2). We are trying to get LLQ implemented on Virtual
>>> Template interfaces for our PPPoE DSL users:
>>> 
>>> vpdn-group akrnaa01rr
>>>  description SBC Akron VPDN Group
>>>  accept-dialin
>>>   protocol l2tp
>>>   virtual-template 1
>>>  terminate-from hostname akrnaa01rr.oh.AADS
>>>  local name xxxxxx
>>>  lcp renegotiation always
>>>  l2tp tunnel password 7 xxxxxxxxxxx
>> 
>> QoS for L2TP users is not supported in your release, you need 12.2SB,
>> take a look at the "Per-Session QoS" feature at
>>
http://www.cisco.com/en/US/docs/ios/12_2sb/feature/guide/sbbbrs1b.html
> 
> Excellent. Thank you very much. What does the "SB" designation stand
> for? 

Hmm, I would guess SP Broadband.. ;)

>>> interface Virtual-Template1
>>>  mtu 1492
>>>  ip unnumbered Loopback1
>>>  rate-limit output access-group 102 8000 1500 2000 conform-action
>>>  transmit exceed-action drop no ip route-cache cef
>>>  no ip route-cache
>> 
>> Disabling CEF is always a bad idea, but
>> 
>>>  compress stac
>> 
>> causes all your traffic to be process switched anyway. You don't want
>> to use compression on anything faster than ISDN/64k, it doesn't
>> scale.. 
> 
> That looks to be a holdover from the old ISDN template that this was
> converted from. I'll consider removing STAC compression from the mix.

and please re-enable CEF and ip route-cache on the vtemplate.

	oli