27
V. Liberatore
Pervasive Computing
QoS: LAN and WAN
Data
link
nNetwork layers
Data link QoS
independent of IP, transport, middleware
Middleware
and transport motivate IP
nMultiple possible solutions
E.g.,
Ethernet switches with 802.1p, 802.1q
Administrative
nCan do anything (e.g., RVSP) within any single administrative domain
nNeed much cooperation with multiple administrative domains