Frame Relay Fragmentation Interleaving - Alcatel Omni Switch/Router User Manual

Frame Relay Fragmentation Interleaving

Frame Relay Fragmentation Interleaving
The fragmentation interleaving feature allows for the transmission of higher priority traffic to
be expedited by setting a maximum frame size. If lower priority traffic exceeds the set frame
size value, it is fragmented into smaller pieces less than or equal to the set maximum frame
size.
When the fragmentation feature is enabled, frame traffic is examined for priority. High priority
traffic is not fragmented. Fragemented frames are reassembles on the far side (destination) of
the link.
The following diagram illustrates this concept:
Higher Priority Frame
Queue
Lower Priority Fragment
Fragmentation must be enabled on both ends of the data link for successful fragmentation
and reassembly to occur.
The maximum frame size should not be set so low that average frame traffic is broken into
more than 64 fragments.
For information on enabling Frame Relay fragmentation, see Modifying a Virtual Circuit on
page 29-29.
Page 29-20
Before Transmission
Lower Priority Frame
After Transmission
Higher Priority Frame
Frame Relay Fragmentation Process
Queue
Lower Priority Fragment