Inter-domain routing (contd)
BGP-4 too much optimized for 32-bits
Inter-domain routing protocol (IDRP) from the OSI world is the current choice for IPv6.
- IDRP has a superset of BGP functionalities
- It does not use TCP => can send new (and modified) routing packets if the old ones do not make it {instead of retransmitting stale information}
- It uses address-prefixes instead of AS numbers {builds on TLA/NLA and avoids AS assignment by IANA}