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HoVPN ·································································································································································· 243

OSPF VPN extension ··········································································································································· 245

BGP AS number substitution and SoO ·············································································································· 247

MPLS L3VPN configuration task list ···························································································································· 248

Configuring basic MPLS L3VPN ································································································································· 248

Configuring VPN instances ································································································································ 249

Configuring routing between PE and CE ·········································································································· 253

Configuring routing between PEs ······················································································································ 259

Configuring routing features for BGP VPNv4 subaddress family ·································································· 259

Configuring inter-AS VPN ··········································································································································· 262

Configuring inter-AS option A ···························································································································· 262

Configuring inter-AS option B ···························································································································· 263

Configuring inter-AS option C···························································································································· 264

Configuring nested VPN ·············································································································································· 265

Configuration restrictions and guidelines ········································································································· 266

Configuration procedure ···································································································································· 266

Configuring HoVPN ····················································································································································· 267

Configuring an OSPF sham link ································································································································· 267

Configuring a loopback interface ····················································································································· 268

Redistributing the loopback interface route and OSPF routes into BGP ························································ 268

Creating a sham link ··········································································································································· 268

Configuring BGP AS number substitution and SoO ································································································· 269

Resetting BGP connections ·········································································································································· 270

Displaying and maintaining MPLS L3VPN ················································································································ 270

MPLS L3VPN configuration examples ························································································································ 273

Configuring MPLS L3VPNs using EBGP between PE and CE ········································································· 273

Configuring MPLS L3VPNs using IBGP between PE and CE ·········································································· 280

Configuring a hub-spoke network ····················································································································· 287

Configuring inter-AS option A ···························································································································· 295

Configuring inter-AS option B ···························································································································· 300

Configuring inter-AS option C···························································································································· 305

Configuring carrier's carrier ······························································································································ 311

Configuring nested VPN ····································································································································· 318

Configuring HoVPN ············································································································································ 328

Configuring OSPF sham links ···························································································································· 334

Configuring BGP AS number substitution ········································································································· 339

Configuring BGP AS number substitution and SoO ························································································ 343

Configuring IPv6 MPLS L3VPN ······························································································································ 346

Overview ······································································································································································· 346

IPv6 MPLS L3VPN packet forwarding ··············································································································· 347

IPv6 MPLS L3VPN routing information advertisement ····················································································· 347

IPv6 MPLS L3VPN network schemes and functions ·························································································· 348

IPv6 MPLS L3VPN configuration task list ··················································································································· 348

Configuring basic IPv6 MPLS L3VPN ························································································································· 348

Configuring VPN instances ································································································································ 349

Configuring route related attributes for a VPN instance ················································································· 350

Configuring routing between PE and CE ·········································································································· 352

Configuring routing between PEs ······················································································································ 355

Configuring routing features for the BGP-VPNv6 subaddress family ····························································· 356

Configuring inter-AS IPv6 VPN ··································································································································· 357

Configuring inter-AS IPv6 VPN option A ·········································································································· 358

Configuring inter-AS IPv6 VPN option C ·········································································································· 358

Resetting IPv6 BGP connections·································································································································· 359

Displaying information about IPv6 MPLS L3VPN ······································································································ 359