Decision Process
IRX-211 has a T1 and two ethernet ports, useful if you
want to build a firewall someday
IRX-111 has a T1 and one ethernet ports, expandable to two T1s
OR-HS has a T1 and one ethernet port, cheaper than either
IRX, but limited to 1MB of RAM so its unlikely to do
BGP, and isn't expandable.
If you don't want the firewall or expandability, I'd go for the OR-HS.
If you might want to multi-home someday, the IRX-111 would make more sense.
-- Carl Rigney cdr@livingston.com