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V. Liberatore
Pervasive Computing
QoS in Multi-hop Networks
Queuing
nPackets are forwarded from one network to another
nPackets are queued at routers (store-and-forward)
nProtect from cross-traffic cause congestion
Per-Hop
Behaviors (PHB)
nBehavior of individual router
E.g.,
Forward before all other queued packets
nMaps into data link QoS
nDepends on Class-of-Service
Class of
service
nAssigned by source or shapers
nImply PHB