[cisco-voip] 3750 QoS

[Gregory Wenzel]

By default this is what you should go by. RFC guidelines for Traffic Classes

Application

Layer 3  PHB

Layer3 DSCP

L2 Class IPP

Network Control

CS6

48

6

VoIP Telephony

EF

46

5

Call-Signaling

CS5

40

5

Multimedia Conferencing

AF41

34

4

Real-Time Interactive  Video

CS4

32

4

Multimedia Streaming

AF31

26

3

Rea-Time High Definition Broadcast

CS3

24

3

Low-Latency Transactional Data

AF21

18

3

Operations / Administration / Management

CS2

16

2

High-Throughput Data / Bulk Data

AF11

10

1

Best Effort

DF

0

0

Low-priority Data / Scavenger Data

CS1

8

1





From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jason Aarons (AM)
Sent: Friday, March 07, 2014 8:15 PM
To: cisco-voip (cisco-voip at puck.nether.net)
Subject: [cisco-voip] 3750 QoS

Without 'mls qos trust device cisco-phone' this port is not going to match the service-policy.   Correct?  In short I believe this QoS config is wrong.

3750#show run int fa1/0/43
interface FastEthernet1/0/43
switchport access vlan 10
switchport mode access
switchport voice vlan 20
storm-control broadcast level 10.00 5.00
storm-control action shutdown
storm-control action trap
spanning-tree portfast
service-policy input CISCOVOIPVIDEO


class-map match-all VOICE(46)
match ip dscp ef
class-map match-all SOFTPHONE(24)
match ip dscp cs3
class-map match-all VIDEO(34)
match ip dscp af41
!
!
policy-map CISCOVOIPVIDEO
class VIDEO(34)
  set ip dscp af41
class SOFTPHONE(24)
  set ip dscp cs3
class VOICE(46)
  set ip dscp ef


Reference
http://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/91862-cat3750-qos-config.html

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