Enterasys X-Pedition XSR, Справочное руководство CLI

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Frame Relay Map Class Commands
XSR CLI Reference Guide 9-99
frame-relay fragment
This command specifies the FRF.12 end ‐ to ‐ end fragment size for a Frame Relay map ‐ class.
Fragment size is defined in bytes. It specifies the number of payload bytes from the original frame
that will go into each fragment. The transmitted fragment will include eight additional bytes from
headers (6) and CRC(2).
Syntax
frame-relay fragment bytes
Syntax of the “no” Form
The no command disables FRF.12 end ‐ to ‐ end fragmentation:
no frame-relay fragment
Mode
Map Class configuration: XSR(config-map-class)#
Default
Fragmentation is disabled
Example
The following example creates the map class slowlink with fragmentation set at 53 bytes:
XSR(config)#map-class frame-relay slowlink
XSR(config-map-class<slowlink>)#frame-relay fragment 53
XSR(config-map-class<slowlink>)#service-policy frf12
map-class frame-relay
The command selects a supported Frame Relay map class and gives it a mnemonic name that can
be referenced in Frame Relay configuration.
Map-class frame-relay starts configuration of a map ‐ class profile with a user ‐ specific name.
When a map ‐ class command is entered, the CLI enters Map ‐ Class configuration mode, changing
the CLI prompt to config-map-class where you can enter map ‐ class specific values.
Syntax
map-class [ frame-relay | dialer ] map-class-name
Note: For proper operation of fragmentation, QOS is required to classify a service-policy which will
define a high priority queue. The queue must send frames no larger than the fragment size or
fragmentation will also be applied to high priority queue data and latency will grow, defeating the
primary purpose of FRF.12 fragmentation.
bytes
Size of frame to pass unfragmented.
frame-relay
Sets a Frame Relay map class.