1. MPLS Over L3VPN Ron Bonica

2. Reference Model and Requirement 1 C0 CE1 CE2 C3 PE1 P1 Customer VPN Site A Customer VPN Site B Service Provider L3VPN Customer LSP

3. The Problem 1 C0 CE1 CE2 C3 PE1 P1 Customer VPN Site A Customer VPN Site B Service Provider L3VPN Customer LSP

4. Carrier’s Carrier Nearly Solves The Problem 1 C0 CE1 CE2 C3 PE1 P1 Customer VPN Site A Customer VPN Site B Service Provider L3VPN VPN LSP SP-LSP

5. You Want This 1 C0 CE1 CE2 C3 PE1 P1 Customer VPN Site A Customer VPN Site B Service Provider L3VPN VPN LSP SP-LSP Customer LSP

6. Challenges RSVP signal C0-CE1-CE2-C3 Make CE1 believe that the next-hop to C3 is CE2 –Not PE1 –Three proposed solutions (BGP Next Hop Attribute, iBGP, policy manipulation) Partial ERO calculation –C0 to CE2 –CE2 toC3 TE Considerations

7. TE Considerations: A New BGPAttribute CE2 tells SP network TE attributes associated with path between itself and C3 PE2 tells CE1 TE attributes associated with path between itself and C3 –Path through SP network –Path from CE2 to C3 CE1 injects TE information into IGP

8. Questions?