How is QOS-COS supportedacross the enterprise net?

DiffServ and IEEE 802.1p “tags” enable

• Multi-queuing at LAN switching points
• aggregation of QOS traffic at WAN ingress points
• inter-boundary signaling of packet classification

Several techniques used by switching and routing to

• enforce policy (e.g., acceptable use)
• shape traffic and reserve bandwidth
• help control delay and jitter

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