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