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CONFIGURATION EDITOR
Fragmentation
Fragmentation Method
Fragmentation Overrides
Port
Priorities
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FRF.12 UNI fragmentation provides fragmentation between DTE-DCE peers. UNI fragmentation enables more efficient use of high-speed network interfaces by reassembling the fragments at the DCE interface. FRF.12's end-to-end fragmentation and Voice Over Frame Relay (VoFR) end-to-end fragmentation procedures are used FRAD-to-FRAD and are transparent to the network.
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The choice of what fragmentation to use depends upon whether voice traffic is present, the line speed, the capabilities of the switch vendor, and the head-end FRAD.
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If voice traffic is present, voice fragmentation must be used. The VoFR fragmentation provides the ability to prioritize data. UNI fragmentation provides the ability to take advantage of high-speed network lines. The following summarizes some of the factors to consider when choosing the appropriate format:
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Voice Traffic
~use~
FRF.11 VoFR
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Different PVCs used for different traffic types
~use~
FRF.12 UNI or FRF.12 end-to-end
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Same PVC used for different traffic types
~use~
FRF.11 VoFR
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Switch Vendor supports UNI fragmentation
~use~
FRF.12 UNI
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Remote FRAD supports FRF.12 end-to-end fragmentation only
~use~
FRF.12 end-to-end
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Remote FRAD supports FRF.11 VoFR fragmentation
~use~
FRF.11 VoFR
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Port
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Select the port for which you want to configure fragmentation.
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Range: any configured WAN port
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Fragmentation Method
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Select the method of fragmentation you wish to use. For more information, see above.
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Range: VoFR, UNI, End-to-End, or None
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Priorities
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These fields enable you to define the fragment size and Sub Channel ID for each type of priority traffic.
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Fragment Size: 32 ~ 8192
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Sub Channel ID: 0 ~ 255, or None
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The SCID must be set to a number between 0 and 255 if either of the VoFR fragmentation options are selected. Otherwise, the SCID must be set to None.
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If 0 ~ 63 is selected, a one-byte voice header is placed on each fragment.
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If 64~255 is selected, a two-byte voice header is placed on each fragment.
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Each SCID must be unique to the port level.
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Fragmentation Overrides
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These fields enable you to define overrides for individual routes. To add an override, click on the Add button.
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