--> Inter AS MPLS VPN Option C is a scalable option compared to Inter-AS MPLS VPN option A & B
--> ASBR routers need to be connected with each other.
--> No Vrf Configuration is required in ASBR.
--> EBGP IPv4 should be configured between ASBR routers.
--> Packets are sent as labeled between ASBR routers, there is an end to end LSP path between customer sites.
--> EBGP VPNV4 should be configured between Route Reflector or both Service Providers.
--> ASBR routers only store loopback addresses of PE routers in their BGP table.
--> BGP is used to exchange LABELS between Autonomous Systems.
--> Inter AS option C requires more trust between Service Providers and Least secure as service providers need to share their internal networks.
MD.Kareem
CCIE #54759
--> ASBR routers need to be connected with each other.
--> No Vrf Configuration is required in ASBR.
--> EBGP IPv4 should be configured between ASBR routers.
--> Packets are sent as labeled between ASBR routers, there is an end to end LSP path between customer sites.
--> EBGP VPNV4 should be configured between Route Reflector or both Service Providers.
--> ASBR routers only store loopback addresses of PE routers in their BGP table.
--> BGP is used to exchange LABELS between Autonomous Systems.
--> Inter AS option C requires more trust between Service Providers and Least secure as service providers need to share their internal networks.
MD.Kareem
CCIE #54759
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