Alcatel-Lucent 7750 SR - CE to PE Routing Protocols; PE to PE Tunneling Mechanisms; Per VRF Route Limiting

Virtual Private Routed Network Services
7750 SR OS Services Guide Page 1077
CE to PE Routing Protocols
The 7750 SR VPRN supports the following PE to CE routing protocols:
•BGP
• Static
•RIP
• OSPF
PE to PE Tunneling Mechanisms
The 7750 SR supports multiple mechanisms to provide transport tunnels for the forwarding of
traffic between PE routers within the 2547bis network.
The 7750 SR VPRN implementation supports the use of:
• RSVP-TE protocol to create tunnel LSP's between PE routers
• LDP protocol to create tunnel LSP's between PE routers
• GRE tunnels between PE routers.
These transport tunnel mechanisms provide the flexibility of using dynamically created LSPs
where the service tunnels are automatically bound (the “autobind” feature) and the ability to
provide certain VPN services with their own transport tunnels by explicitly binding SDPs if
desired. When the autobind is used, all services traverse the same LSPs and do not allow alternate
tunneling mechanisms (like GRE) or the ability to craft sets of LSP's with bandwidth reservations
for specific customers as is available with explicit SDPs for the service.
Per VRF Route Limiting
The 7750 SR allows setting the maximum number of routes that can be accepted in the VRF for a
VPRN service. There are options to specify a percentage threshold at which to generate an event
that the VRF table is near full and an option to disable additional route learning when full or only
generate an event.