Cisco ASR1002 Configuration Guide - Page 394

Gigabit EtherChannel for Virtual Private Wire Service Configuring MPLS Layer 2 VPNs Any-to-GEC Mode The Any-to-GEC mode allows switching of data between two physical interfaces in which the two segments, CE1-PE1 and CE2-PE2, are both of different types, while one is GEC, the other can be PPP, Ethernet, Frame Relay, or ATM, as shown in Figure 4. The Any-to-GEC mode has the following features: • Any-to-EtherChannel over MPLS (Bridged) Interworking, page 24 • Any-to-EtherChannel over MPLS (Routed) Interworking, page 26 Figure 4 Topology of the Any-to-GEC Mode for the GEC for VPWS Feature Xconnect Customer Site MPLS Customer Site CE1 (FR or ATM) PE1 (FR or ATM) ASR1K GEC-CE2 GEC-PE2 ASR1K 332074 Note Bridged interworking is used when Layer 2 (L2) packets are considered without regard for Layer 3 contents. In bridged interworking, Ethernet frames that are extracted from the attachment circuit are sent over the MPLS pseudowire. Note Routed interworking is used to carry Layer 3 packets. In routed interworking, IP packets that are extracted from the attachment circuits are sent over the MPLS pseudowire. Restrictions for Gigabit EtherChannel for Virtual Private Wire Service The following are the restrictions for Gigabit EtherChannel for VPWS are the followings: • GEC for VPWS does not support Q-in-Q encapsulation and remote port shutdown. • A maximum four member links are supported under the port channel and a maximum of 64 port channel bundles are supported per router. Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide 18