教案成果交換mpls

1、MPLS VPNCustomer network, which is usually a customer-controlled domain consisting of devices or routers spanning multiple sites belonging to the customerCE routers, which are routers in the customer network that interface with the service provider network. Provider network, which is the provider-co

2、ntrolled domain consisting of provider edge and provider core routers that connect sites belonging to the customer on a shared infrastructure. PE routers, which are routers in the provider network that interface or connect to the customer edge routers in the customer networkP routers, which are rout

3、ers in the core of the provider network that interface with either other provider core routers or provider edge routersMPLS VPN Network ArchitectureCE,PE,P-ROUTERMPLS VPN Routing ModelCustomer isolation is achieved on the PE router by the use of virtual routing tables or instances, also called virtu

4、al routing and forwarding tables/instances (VRFs).RIPv2 (multiple contexts), EIGRP (multiple contexts), OSPFv2 (multiple processes), and BGPv4 (multiple contexts) as routing protocols that can be used per VRF to exchange customer routing information between CE and PE.VRFVRFRD : 64-bit unique identif

5、ier that is prepended to the 32-bit customer prefix or route learned from a CE routerRoute targets (RTs) :identify the VPN membership of the routes learned from that particular siteRoute Distinguisher, Route Targets, MP-BGP, and Address FamiliesRT and RD Operation in an MPLS VPNMPLS VPN Control Plan

6、e OperationControl Plane OperationMPLS VPN Data Plane OperationVRF ConfigurationBGP PE-PE Routing ConfigurationControl and Data Plane OperationStatic PE-CE RoutingRIPv2 PE-CE RoutingMPLS VPN Network with RIPv2 PE-CE RoutingMPLS VPN Network with OSPF PE-CE RoutingBGP Extended Communities for OSPF MPL

7、S VPN Network Using Backdoor LinkA sham-link :logical link that belongs to the area (intra-area) carried by the BGP-based superbackbone. The two PE routers will be the endpoints of the sham-link. Form an OSPF adjacency across it and flood intra-area LSAs via this link. regarded as an unnumbered point-to-point OSPF link in the area belonging to the VPN sites. The sham-link is treated