Inter-AS VPN ·········································································································································· 185
Carrier's carrier ······································································································································ 189
Nested VPN ··········································································································································· 191
HoVPN ··················································································································································· 192
OSPF VPN extension ····························································································································· 194
MPLS L3VPN FRR ································································································································· 197
Protocols and standards ························································································································ 199
Configuring basic MPLS L3VPN ···················································································································· 200
Configuration prerequisites ···················································································································· 200
Configuring VPN instances ···················································································································· 200
Configuring inter-AS VPN ······························································································································ 209
Configuring inter-AS option A ················································································································· 209
Configuring inter-AS option B ················································································································· 209
Configuring inter-AS option C ················································································································ 210
Configuring nested VPN ································································································································ 213
Configuring HoVPN ········································································································································ 214
Configuring an OSPF sham link ····················································································································· 215
Creating a sham link ······························································································································ 216
Configuring MPLS L3VPN FRR ····················································································································· 217
Configuring basic MPLS L3VPN ············································································································ 221
Configuring nested VPN ························································································································· 265
Configuring HoVPN ································································································································ 274
Overview ························································································································································ 299
Protocols and standards ························································································································ 300
Configuration prerequisites ···················································································································· 301
Configuring VPN instances ···················································································································· 301
Configuring inter-AS IPv6 VPN ······················································································································ 311
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