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New Member

QOS on layer 3 6509

Are all classification and marking options on the MSFC 2 (layer 3) of a 6509 for local L3 processing only? I can not get the classification to appear at Layer 2 of the 6509. I have set the default ACL at layer 2 to trust-dscp and if I make QOS ACLs at L2 they are carried through to the output port and beyond.

4 REPLIES
New Member

Re: QOS on layer 3 6509

On a hybrid system, the configurations are done at the supervisor level. The actual qos is done at the PFC.

http://www.cisco.com/warp/public/473/#LANqos

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_6_3/confg_gd/qos.htm

New Member

Re: QOS on layer 3 6509

In hybrid both layer 2 and 3 accept QOS configurations, but only layer 2 configs have any effect. True?

Cisco Employee

Re: QOS on layer 3 6509

You are correct. MSFC might accept QoS commands since it's an IOS device but it has no effect as we use MLS/CEF in 6500 and not every packet hits the MSFC

New Member

Re: QOS on layer 3 6509

The first packet in a new stream should go to layer 3. I do not see that packet marked. Also the class-map defining traffic to be marked was getting hits - as seen by a show command.

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