QoS - Nortel Option 11c thru 2811s

Unanswered Question
Oct 30th, 2007
User Badges:

Looking for config assistance on a couple of 2811s, connected via a T1 that will carry voice traffic between 2 Nortel Option 11c's.

Will 'auto qos voip trust' on the serial interfaces suffice?

Does a 'map' function need to be defined?

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
Loading.
paolo bevilacqua Tue, 10/30/2007 - 07:53
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    Founding Member

Hi,


if you only carry voice on the T1, you don't need to configure anything.

Else, the GW should be already be sending voice as DSCP EF (or configure media under DP), I would configure a simple service-policy with priority.



drgebhardt Tue, 10/30/2007 - 07:57
User Badges:

I should have clarified. The T-1s will carry both data and voice. The phones themselves will be digital. Nortel classifies the IP connection between the Option 11c's as IP trunking.


With the above added, can anyone site a config example?

paolo bevilacqua Tue, 10/30/2007 - 08:51
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    Founding Member

Hi, that is the minimal config to protect voice traffic:


class-map voice

match ip dscp ef


policy-map test

class voice

priority percent 50 <--- you are allocating no more than 768 Kbps to voice


interface serial X/Y

service policy output test


Hope this helps, please rate post if it does!

Actions

This Discussion