Here are some hints for you to research:

I believe there is an error in one of the class-maps.  See if you can find it 
or agree.

I believe you have too much extra stuff configured, let’s eliminate the 
unneeded stuff.

How about use match IP protocol instead of access-lists?

Are you sure your access-list is correct for the inbound / outbound traffic you 
have?

I think the data vlan people are going to be pissed and complain about 
slowness.  I know it’s a lab.  I believe you can get the entire config down to 
a much simplier 10-15 lines instead of all the stuff you have.

From: ccie_voice-boun...@onlinestudylist.com 
[mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Alex Hannah
Sent: Wednesday, November 11, 2009 2:41 PM
To: ccie_voice@onlinestudylist.com
Subject: [OSL | CCIE_Voice] 3750 QoS Question

Hello everyone.

I am attempting to create the following QoS policy on a 3750  port with an IP 
Phone plugged in behind it.

The policy will police signalling ( SCCP ) 32k down to 8k and remark to DSCP 8. 
 I have read through most of the SRND guide for the 3750, the model I am 
following is the:

2970/3560/3750—Conditionally-Trusted IP Phone + PC + Scavenger (Basic) Model 
Configuration on page 105 of the 3.3 QoS SRND.

Can anyone validate my work below and let me know if you think this meets those 
requirements?  Also, in this scenerio, Auto Qos would not need to be applied 
over top of it correct?

mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos map policed-dscp 0 24 to 8

class-map match-all VVLAN-VOICE
 !Was in SRND but not using match access-group name VVLAN-VOICE
 match ip dscp ef

class-map match-all VVLAN-CALL-SIGNALING
 !Was in SRND but not using match access-group name VVLAN-CALL-SIGNALLING
 match ip dscp cs3 af31

class-map match-all VVLAN-ANY
  match access-group name VVLAN-ANY

policy-map IPPHONE+PC-BASIC
 class VVLAN-VOICE
  set ip dscp 46
  police 128000 8000
  exceed-action drop
 class VVLAN-CALL-SIGNALING
  set ip dscp 24
  police 32000 8000
  exceed-action policed-dscp-transmit
 class VVLAN-ANY
  set ip dscp 0
  police 32000 8000
  exceed-action policed-dscp-transmit

 class class-default
  set ip dscp 0
  police 5000000 8000
  exceed-action policed-dscp-transmit

interface FastEthernet0/1
 service-policy input IPPHONE+PC-BASIC

ip access list extended VVLAN-VOICE
 permit udp x.x.x.x 0.0.0.255 any range 16384 32767

ip access list extended VVLAN-CALL-SIGNALING
 permit tcp x.x.x.x 0.0.0.255 any range 2000 2002

ip access list extended VVLAN-ANY
 permit ip x.x.x.x 0.0.0.255 any



Thanks,

Alex 

 

 

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