3Com Router 3000 Ethernet FamilyConfiguration Guide Chapter 6 MPLS QoS3Com Corporation6-6Perform the following configurations in interface view.Table 6-12 Apply TP policy on the interface and label MPLS packetsOperation CommandApply TP policy on theinterface and labelMPLS packetsqos car inbound { any | acl acl-number | carl carl-index }cir committed--information-rate cbs committed-burst-sizeebs excess-burst-size green action red actionRemove theapplication of TP policyon the interface anddisable labeling ofMPLS packetsundo qos car inbound { any | acl acl-number | carlcarl-index } cir committed-information-rate cbscommitted-burst-size ebs excess-burst-sizeaction can bez remark-mpls-exp-continue new-mpls-exp: Configures the new MPLS EXP value,new-mpls-exp, and continue to be processed by the next CAR policy, ranging from0 to 7.z remark-mpls-exp-pass new-mpls-exp: Configures the new MPLS EXP value,new-mpls-exp, and send the packet to the destination, ranging from 0 to 7.EXP domain of the MPLS packet can only be set on the inbound interface of the PE. Ifin the input direction is IP packet, but is encapsulated as MPLS packet in the outputdirection, the configured TP policy has taken effect.When setting the EXP domain of the MPLS packet, two layers of labels shall be set andToS domain in the IP header shall not be modified.6.3 MPLS QoS Configuration Example6.3.1 QoS Configuration for Streams in the Same VPNI. Network requirementsIn the network diagram, CE1 and CE2 belong to VPN1; the bandwidth of the PE1-P linkand P-PE2 link is 2M. Define different QoS guarantee levels for the streams withdifferent priority levels in the VPN1.The configuration in this example includes these two parts:First, configure MPLS VPN on the CE1, PE1, P, PE2 and CE2.z Run OSPF between PE1, P and PE2z Create MP-EBGP neighbors between PE and CEz Create MP-IBGP neighbors between PEsSecond, configure MPLS QoS on the PE1 and P.z Configure QoS policy on the ingress interface Ethernet1/1/0 on the PE1 and setEXP domain value according to the DSCP attribute of MPLS packets.
