November 2001
Intermediate to advanced
320 pages
7h 58m
English
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11.7. Chapter Summary
Class of Service and QoS
Class of service is required to give preferential treatment to data as it transits the network.
Class of service refers to prioritization of different traffic types.
QoS includes class-of-service features as well as bandwidth allocation and timely delivery guarantees.
Class of service includes 802.1p link-layer prioritization, IP header TOS bits, and DiffServ.
QoS includes bandwidth allocation via RSVP and MPLS.
Standard class-of-service and QoS mechanisms can be leveraged for IP storage networking.
802.1p Traffic Prioritization
The IEEE 802.1p standard is a link-layer method for assigning priority to a frame.
A 3-bit prioritization field provides 8 levels of service (levels 0-7) with level 7 representing ...
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