201SVC supports these tunnel types: LDP LSP and CR-LSP. By default, LDP LSP tunnels are used.After you configure SVC on a Layer 3 interface (Layer 3 Ethernet interface or VLAN interface), packetsarriving at this interface are forwarded over the VC. If the Layer 3 interface is a VLAN interface, allpackets carrying the tag of the VLAN are forwarded over the VC, no matter which Layer 2 Ethernet portsthat the packets arrive at. The device chooses a VC for a received packet according to only the VLAN tagcarried in the packet. It cannot differentiate the users and services on different Layer 2 Ethernet ports.Configure SVC on a VLAN interface when all users connected to the VLAN interface have their packetsforwarded over the same VC.To configure a static VC on a Layer 3 interface of a PE:Step Command Remarks1. Enter system view. system-view N/A2. Enter the view of theinterface connecting theCE.interface interface-type interface-number N/A3. Create a static VCconnection.mpls static-l2vc destinationdestination-router-id transmit-vpn-labeltransmit-label-value receive-vpn-labelreceive-label-value [ ethernet | vlan } |tunnel-policy tunnel-policy-name ] *The label range for SVC is 16 to1023, which is the label rangefor static LSPs.The transmit-vpn-label andreceive-vpn-label configured onthe local PE must be the same asthe receive-vpn-label andtransmit-vpn-label configuredon the peer PE.Configuring Martini MPLS L2VPNTo configure Martini MPLS L2VPN, complete the following tasks:1. Configure the remote peer.In Martini MPLS L2VPN implementation, VC labels must be exchanged between PEs. Because twoPEs may not be connected to each other directly, you must establish a remote session between thetwo PEs, so that VC FECs and VC labels can be transferred through the session.2. Create a Martini VC, in one of the following ways:{ Configure a Martini VC on a Layer 3 interface.In this way, packets arriving at this interface are forwarded over the created VC. If the Layer 3interface is a VLAN interface, all packets carrying the tag of the VLAN are forwarded over theVC, no matter which Layer 2 Ethernet ports that the packets arrive at. The device chooses a VCfor a received packet according to only the VLAN tag carried in the packet. It cannotdifferentiate the users and services on different Layer 2 Ethernet ports. Create a VC on a VLANinterface when all users connected to the VLAN interface have their packets forwarded overthe same VC.{ Configure a Martini VC for a service instance.After you configure a Martini VC for a service instance applied on a Layer 2 Ethernet interfaceor Layer 2 aggregate interface, the interface uses the service instance to match incomingpackets. Packets matching the service instance are forwarded over the VC. A service instancecan match all packets received on the interface, packets carrying the specified VLAN tags, alltagged packets, or packets with no VLAN tags. Configure Martini VCs in this way when the
