L3VPN:
- Blue Zone’s routers participate in customers layer 3 routing
- Blue Zone’s routers manage VPN-specific routing tables, distribute routes to remote sites
- Customer routers advertise their routes to the Blue Zone
- The available routing protocols used between The Blue Zone network and the customer are: Static, RIP,
ISIS, OSPF, BGP
L2VPN :
- Customer maps its layer 3 routing to the circuit mesh
- Blue Zone delivers layer 2 circuits to the customer, one for each remote site
- Customer routes are transparent to Blue Zone
VPLS :
- The Blue Zone’s network appears to function as a single LAN segment ( Acts similarly as a learning bridge) to the
customer in a VPLS environment
- The customer simply configures its core facing interfaces as if they were connected to a single learning bridge
- No requirement for one logical connection per remote customer site
- Customer routes are transparent to Blue Zone
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