couple comments I didn't get a chance to make in class:

• admission control is going to be a distributed computing problem.   a hard one.
• the reservation system described in class today resembles a specific distributed computing problem: 2-phased commit.  it takes a round trip to request that nodes "prepare" resources, which they then "promise".  2PC has some gnarly failure modes that I'm sure this system shares.
• isn't this in some sense a regression towards circuit-based networks?