Problem #1
(a)
round trip delay = 16ms (@8 microsec/mile)
For peak TCP rate:
CR=16 * 10 –3 * 10 * 10 6 / (48 * 8) = 416
Note: AAL5 payload = 48 bytes/cell
(b)
buffer must be 416 * 53 = 22Kbytes
(c )
Problems:
Buffer size on node B (100VCs would need 2.2Mbytes)
Control overhead
Problem #2
(a)
Bellman Ford can be used to propagate minimum residual bandwidth info in the same way and along with min path.
(b)
Each source simply sets its rate to a factor a (e.g. ½) of the advertized residual bandwidth
Problem #3
Pros of multifiber:
Cons of multifiber: