Currently having a full BGP path and routing table on a cisco 7500 in dual
homed config will eat nearly 32MB making 64MB an absolute must have. In any
case current portmaster hardware is not capabable of dealing with such
enormious routing tables let alone simply using 2 fully loaded T1 lines.
IRX might one day become usefull at peering points (would also be a dream to
see IS-IS or EIGRP by then) but backbone routing no way, never.
Taking in account the time it took between promising VLSM/OSPF and actualy
seeing it (still waiting for pm2er30) my guess is that Livingston will have
BGP4 running by the time it is ancient history, I'd rather see some effort
in ipv6 and the mysterious stuck-W1 bug (deny everything you want but it
remains a comos bug)
--Steven.