iv
Configuration prerequisites ································································································ 175
Configuring VPN instances ································································································ 175
Configuring routing between a PE and a CE ·········································································· 177
Configuring routing between PEs ························································································ 181
Configuring BGP VPNv4 route control ·················································································· 182
Configuring inter-AS VPN ········································································································ 183
Configuring inter-AS option A ····························································································· 183
Configuring inter-AS option B ····························································································· 184
Configuring inter-AS option C ····························································································· 185
Configuring nested VPN ·········································································································· 188
Configuring HoVPN ················································································································ 189
Configuring an OSPF sham link ································································································ 190
Configuring a loopback interface ························································································· 190
Redistributing the loopback interface route ············································································ 191
Creating a sham link ········································································································ 191
Specifying the VPN label processing mode on the egress PE ·························································· 191
Configuring BGP AS number substitution ···················································································· 192
Configuring MPLS L3VPN FRR ································································································· 192
Enabling SNMP notifications for MPLS L3VPN ············································································· 194
Enabling logging for BGP route flapping ······················································································ 194
Displaying and maintaining MPLS L3VPN ··················································································· 195
MPLS L3VPN configuration examples ························································································ 196
Configuring basic MPLS L3VPN ························································································· 196
Configuring a hub-spoke network ························································································ 202
Configuring MPLS L3VPN inter-AS option A ·········································································· 209
Configuring MPLS L3VPN inter-AS option B ·········································································· 213
Configuring MPLS L3VPN inter-AS option C ········································································· 218
Configuring MPLS L3VPN carrier's carrier ············································································ 225
Configuring nested VPN ··································································································· 233
Configuring HoVPN ········································································································· 242
Configuring an OSPF sham link ·························································································· 249
Configuring BGP AS number substitution ············································································· 253
Configuring MPLS L3VPN FRR through VPNv4 route backup for a VPNv4 route ·························· 257
Configuring MPLS L3VPN FRR through VPNv4 route backup for an IPv4 route ···························· 259
Configuring MPLS L3VPN FRR through IPv4 route backup for a VPNv4 route······························ 261
Configuring IPv6 MPLS L3VPN ······················································· 264
Overview ······························································································································ 264
IPv6 MPLS L3VPN packet forwarding ·················································································· 264
IPv6 MPLS L3VPN routing information advertisement ····························································· 265
IPv6 MPLS L3VPN network schemes and functions ································································ 265
Protocols and standards ··································································································· 265
IPv6 MPLS L3VPN configuration task list ···················································································· 266
Configuring basic IPv6 MPLS L3VPN ························································································· 266
Configuring VPN instances ································································································ 266
Configuring routing between a PE and a CE ·········································································· 268
Configuring routing between PEs ························································································ 274
Configuring BGP VPNv6 route control ·················································································· 274
Configuring inter-AS IPv6 VPN ································································································· 275
Configuring inter-AS IPv6 VPN option A ··············································································· 276
Configuring inter-AS IPv6 VPN option C ··············································································· 276
Configuring an OSPFv3 sham link ····························································································· 277
Configuring a loopback interface ························································································· 277
Redistributing the loopback interface address ········································································ 277
Creating a sham link ········································································································ 278
Enabling logging for BGP route flapping ······················································································ 278
Displaying and maintaining IPv6 MPLS L3VPN ············································································ 278
IPv6 MPLS L3VPN configuration examples ················································································· 280
Configuring IPv6 MPLS L3VPNs ························································································· 280
Configuring IPv6 MPLS L3VPN inter-AS option A ··································································· 286
Configuring IPv6 MPLS L3VPN inter-AS option C ··································································· 291
Configuring IPv6 MPLS L3VPN carrier's carrier······································································ 297
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