[c-nsp] 7200 LNS - QOS/shaper on interface facing LAC

[ar]

Hi Anton.

Yes you are correct.
I have GigE port facing LAC. And only 10Mpbs is allocated for this connection.
I want to ensure voice gets prioritized and so on...
I have original TOS headers reflected on the tunnel headers already.


________________________________
 From: Anton Kapela <tkapela at gmail.com>
To: ar <ar_djp at yahoo.com> 
Cc: cisco-nsp <cisco-nsp at puck.nether.net> 
Sent: Wednesday, February 22, 2012 10:32 PM
Subject: Re: [c-nsp] 7200 LNS - QOS/shaper on interface facing LAC
 
On Mon, Feb 20, 2012 at 6:29 AM, ar <ar_djp at yahoo.com> wrote:

> I have 7200 acting as LNS.
> I have multiple QOS for the subscribers via Radius.
> One GE interface of the 7200 LNS is facing to LAC.
>
> I am trying to attach a QOS/shaper policy on this GE interface.

and so that I understand -- is the intent here to ensure the total
transmitted packets in l2tp towards the lac does not exceed a given
total less than the gige port?

if yes, then also note 'qos pre-classify' may be required on the
virtual-templates, as this shaper would not normally see "inside" of
the l2tp ip packet.

presumably, if you're shaping your aggregate tx'd bits towards the
lac(s), you'd want to do some amount of fair-queue or flow based wred,
not simply fifo it arbitrarily deeply in the policy map...

-tk