50 CARD INTERMIXING FOR MPLSSUPPORTOverviewIntroduction to CardIntermixingThe intermixing feature is used to enable deployment of MPLS VPN services oncards that do not support MPLS. Switch 8800 Family routing switches supportvarious modes of MPLS VPN function and provide abundant and differentiatedMPLS VPN service to meet the differentiated needs of different users in theperformance, reliability, port utilization of MPLS VPN functions.n ■ Unless otherwise specified, MPLS VPN services are processed by theMPLS-supporting interface cards. In this manual, an interface card thatsupports MPLS function is called MPLS card for short, and an interface cardthat does not support MPLS function is called non-MPLS card for short.■ The purpose of card intermixing is to enable the non-MPLS cards to supportMPLS function through the MPLS cards. Refer to the "VPN" section in thismanual for the information on the processing of MPLS VPN through VPLSApplication Modules.■ Card intermixing does not support using XP4B and other interface cards onwhich ACL redirection is configured under the port group as non-MPLS card forintermixing.Card IntermixingMechanismThe implementation mechanism for card intermixing is as follows:■ The MPLS card and the non-MPLS card co-exist in the same switch;■ Use the port of the non-MPLS card for the access to the service private networkside of the MPLS VPN ;■ Redirect the port of the non-MPLS card through QACL, to redirect the receivedpackets to the specified MPLS card for processing;■ The port of MPLS card is set as Loopback port automatically and the port typeis Trunk;■ The access port of the non-MPLS card and the Loopback port of the MPLS cardbelong to the same VLAN.The port on the MPLS card can also be used for the access to the service privatenetwork side of the MPLS VPN. In this case, you do not need to configure cardintermixing, and you must use the port of the MPLS card for the connection withthe MPLS public network side.
