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MPLS Fundamentals by Luc De Ghein - CCIE No. 1897

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Quality of Service

As with AToM, you can use quality of service (QoS) with VPLS. By default, the 802.1Q priority bits are copied to the Experimental (EXP) bits of the MPLS labels. If the service provider wants to change the QoS, he can deploy Modular QOS Command Line Interface (MQC). On the VLAN interface, the service provider can configure MQC to color and police the traffic. You can directly set the EXP of the imposed MPLS labels to a certain value and shape the traffic to a certain average rate. This is especially important when the access interfaces to the customer are high-speed Ethernet links. Example 11-13 shows a configuration example in which the Ethernet traffic is shaped on the VLAN interface and the EXP bits in the MPLS labels are ...

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