D-Link DXS-3400 Emulator - Page 795
match cos class-map configuration
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DXS-3400 Series Lite Layer 3 Stackable 10GbE Managed Switch CLI Reference Guide Example This example shows how to configure the queue scheduling algorithm mode to ETS mode on ethernet 1/0/1. Switch# configure terminal Switch(config)# interface ethernet 1/0/1 Switch(config-if)# mls qos scheduler ets Switch(config-if)# 82-5 pause This command is used to enable Priority-based Flow Control (PFC) on a class referenced in a type network QoS policy map. Use the no form of this command to disable PFC on a class. pause no pause Parameters None. Default By default, this option is disabled. Command Mode Policy Map Type Network-QoS Class Configuration Mode. Command Default Level Level: 12. Usage Guideline Ethernet interfaces use Priority-based Flow Control (PFC) to provide lossless service. PFC, which is defined in IEEE 802.1Qbb, extends the basic IEEE 802.3x PAUSE semantics and uses the IEEE 802.1p CoS values in the IEEE 802.1Q VLAN tag to differentiate up to eight CoSs that can be subject to flow control independently. If PFC of all priorities is disabled, the interface defaults to the IEEE 802.3x flow control setting. When PFC of any priority is enabled, the interface will recognize PFC PAUSE frames. In other words, the switch will pause a CoS on which PFC is enabled and the received PFC PAUSE indicates the CoS should be paused. A PFC PAUSE frame will be transmitted if the congestion is detected on the PFC enabled CoS. To enable PFC on a per-CoS basis, do the following: • Use the class-map type network-qos match-any global configuration command to create a type network QoS class map. o Use the match cos class-map configuration command to specify which CoS to configure. • Use the policy-map type network-qos command to create a type network QoS policy map. o Use the class type network-qos policy-map configuration command to specify a type network QoS class map to be associated with a traffic policy and then enter into the policy-map type network-QoS class configuration mode. o Use the pause policy map type network-qos class configuration command to enable PFC pause characteristics on a class referenced in a type network QoS policy map. • Use the service-policy type network-qos input interface configuration command to apply a type network QoS policy map. 791
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