Configuring Frame Relay Ip Rtp Priority - Cisco 10000 Series Configuration Manual
Quality of service configuration guide
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Configuring Frame Relay IP RTP Priority
Example A-5
Example A-5
Router(config-map-class)# frame-relay interface-queue fair random-detect
Router(config-map-class)# frame-relay interface-queue fair random-detect
exponential-weight-constant 16
Example A-6
Example A-6
Router(config-map-class)# frame-relay interface-queue fair random-detect precedence 2
32000 32000 65000
Router(config-map-cl)#
Configuring Frame Relay IP RTP Priority
The Frame Relay IP RTP Priority feature allows Voice over Internet Protocol (VoIP) packet classification
at the DLCI level. This classification is based on whether or not the packet IP Real-Time Protocol (RTP)
has an even-numbered UDP port within (or outside of) the specified range. Only even ports are matched
because they carry the real-time data streams. Odd ports are not matched because they only carry control
information. If the IP RTP even-numbered port is within the configured range, the packet is identified as
a real-time packet. Real-time packets are given higher priority than regular data packets and are queued
to a priority output queue.
You must configure the Frame Relay weighted fair queue interface to use this feature (see
Note
a DLCI Queue Weight" section on page
frame-relay ip rtp priority configured.
Parameters for Frame Relay IP RTP priority are configured using the map-class frame-relay command
(see the
associated with a Frame Relay interface, all DLCIs created for that interface are assigned a priority
queue for the RTP packets. A different map class can be associated with a different DLCI, which means
each DLCI is assigned a different RTP port range.
The following are examples of priority queues:
•
•
The following are examples of non-priority queues:
•
•
•
Cisco 10000 Series Router Quality of Service Configuration Guide
A-4
sets the exponential weight constant to 16.
Setting the Exponential Weight Constant
sets the precedence parameters.
Setting the Precedence Parameters
"Creating a Map Class" section on page
DLCI 2 RTP queue
DLCI 1 RTP queue
NCQ
DLCI 3 data queue
DLCI 2 data queue
Appendix A
Configuring Frame Relay QoS Using Frame Relay Legacy Commands
A-2). A priority queue is created for each DLCI that has
A-1). When a map class with IP RTP defined is
"Specifying
OL-7433-09
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