QuidwayMPLSVPNQuidwayMPLSIPSECVPNMPLSVPNMPLSMPLSVPNIPMPLSIPMPLSLabelBGP4MPLSVPNVPNIPVPNMPLSVPNMPLSVPNLDPLabelDistributionProtocolMPLSMPLSMBGPBGPVPNVPNQoSVPNVPNMPLSVPNCECustomEdgeSitePEProviderEdgeCEPProviderRouterCE:MPLS/BGPMPLSCoSRSVP,QoSVPNMPLS/BGPVPNQuidwayMPLSVPNVPNVRFs(VPNrouting/forwardinginstance)VRFPEVPN(site)VRFIPFIB(forwardinginformationtable)VRFFIBVPNFIB(routedistinguisher)VPN-IPv4VPN-IPv4IANAVPN-IPv4RD(routedistinguisher)PEVRFMBGPVPNVPN-IPv4NLRI(NetworkLayerReachabilityInformation)BGPASiBGPASEBGPPE-PEPE-RR(routereflector)iBGPPE-CEEBGPBGPBGP(BGP,MultiprotocolExtensionsforBGP-4)VPN-IPv4BGPBGPpeerVPNBGPIPMPLSVRFVRFFIBPECElabellabelBGPCommunitiesBGPPECEIPPElabelIPPElabeledIPlabelIPIPCElabeledIPlabelswitchingtrafficengineeredpathIP2label1labelPE2labelPEsiteQuidwayMPLS/BGPVPN=2.2.2.2IP=1.1.1.1IP=6TCP=21FTPQudiwayQuidway8:FTP1VPNVPN3Internet0020:00FTPLANEthernetTokenRingFDDI