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Home : Cisco Multicast Routing and Switching : RSVP Reservation Model

RSVP Reservation Model

Jan 22,2011 by alperen

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RSVP Reservation Model  
  An RSVP reservation request is referred to as a flow descriptor. The flow descriptor consists of two elements. The first element is the flowspec, which specifies the QoS and is used in conjunction with the packet scheduler. The second element is the filter spec, which is used to determine which packets in the flow will receive the QoS that has been reserved at the node. The filter spec is used to inform the packet classifier of the parameters that will be checked to determine if a packet is a candidate for the QoS reservation. The RSVP specification currently has a basic filter specification consisting of the sender’s IP address and the UDP/TCP source port number. Figure 10-3 shows the relationship between the flow descriptor and the RSVP functional model.

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