Cisco has slightly modified its implementation of (informational) RFC 4594, a good explanation of why is here. For example Cisco uses CS3 for Call Signaling not CS5 as you listed from the RFC. http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/QoSIntro_40.html#wp61104
Table 1-1 for Cisco’s recommendations. http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/QoS-SRND-Book/QoSIntro.html In my case I wanted to verify the Service Policy gets processed. From: Gregory Wenzel [mailto:[email protected]] Sent: Saturday, March 08, 2014 5:13 PM To: Jason Aarons (AM); cisco-voip ([email protected]) Subject: RE: 3750 QoS 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:[email protected]] On Behalf Of Jason Aarons (AM) Sent: Friday, March 07, 2014 8:15 PM To: cisco-voip ([email protected]<mailto:[email protected]>) 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 This message w/attachments (message) is solely for the use of the intended recipient(s) and may contain information that is privileged, confidential or proprietary. If you are not an intended recipient, please notify the sender, and then please delete and destroy all copies and attachments, and be advised that any review or dissemination of, or the taking of any action in reliance on, the information contained in or attached to this message is prohibited. Unless specifically indicated, this message is not an offer to sell or a solicitation of any products. itevomcid
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