Cisco IOS Wide-Area Networking Configuration Guide - Free Books

Supported Shared Port Adapters for the Cisco 7600 Series RouterThe following shared port adapters (SPAs) support L2TPv3 on the Cisco 7600 series routers.Ethernet• SPA_TYPE_ETHER_2xGE (2-port Gigabit Ethernet)• SPA_TYPE_ETHER_2xGE_V2 (2-port Gigabit Ethernet)• SPA_TYPE_ETHER_5xGE_V2 (5-port Gigabit Ethernet)• SPA_TYPE_ETHER_1x10GE_V2 (single-port 10-Gigabit Ethernet)ATM• SPA_TYPE_KATM_2xOC3 (ATM, 2-port OC3)• SPA_TYPE_KATM_4xOC3 (ATM, 4-port OC3)• SPA_TYPE_KATM_1xOC12 (ATM, 1-port OC12)• SPA_TYPE_KATM_1xOC48 (ATM, 1-port OC48)• SPA_TYPE_CEOP_24xT1E1(CEoP 24-port T1/E1)• SPA_TYPE_CEOP_1xOC3 (CEoP 1-port OC3)• SPA_TYPE_CEOP_2xT3E3 (CEoP 2-port T3/E3)Cisco 7600 Series-Specific RestrictionsOn the Cisco 7600 series routers, L2TPv3 is a linecard feature that is implemented only on the SIP-400linecard. The minimum hardware requirement for enabling the L2TPv3 service on a 7600 router are anL2TPv3-aware linecard( such as the SIP-400) at the Layer 2 CE- facing side and an IP interface on anylinecard at the IP coring-facing side. A service card is not required for L2TPv3.General RestrictionsL2TPv3 imposes the following general restrictions:• The layer 2-facing linecard must be an L2TPv3-supporting linecard.• There must be at least one distinct L2TPv3 tunnel per Layer 2-facing linecard.• Only IPv4 tunneling is supported for Layer 2 frames (configurations such as EoL2TPv3oMPLS (onthe encapsulating provider edge (PE) device are not supported).EVC/EFP RestrictionsL2TPv3 is not supported in conjunction with EVC features. L2TPv3 can coexist with EVC on the sameport, meaning that while one subinterface is used to tunnel dot1q-tagged traffic over L2TP, anothersubinterface can be used to perform EVC features.SVI VLAN Interfaces RestrictionsL2TPv3 is not supported on SVI VLAN interfaces.MIB Support RestrictionsThere is no L2TPv3-specific MIB support.6