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fr compression frf9
Syntax fr compression frf9
undo fr compression
View Subinterface (point-to-point) view
Parameter None
Description Use the
fr compression frf9 command to enable FRF9 compression function.
Use the undo fr compression command to disable FRF9 compression function.
By default, frame relay compression function is disabled.
The system supports FRF.9 stac compression function, which groups messages into
control messages and data messages. An control message is used for state
negotiation between the two sides that have compression protocol enabled of a
DLCI connection. FRF.9 data messages are exchanged only after the negotiation
succeeds. The negotiation fails if the number of FRF.9 control messages sent
exceeds. In this case, compression configuration cannot take effect.
Frame relay main interface is point-to-multipoint, but the subinterface includes
two types: point-to-point and point-to-multipoint. Frame relay FRF.9 compression
configuration differs depends on different types of interfaces. For a point-to-point
frame relay subinterface, just use the fr compression frf9 command to configure
on the subinterface view and FRF.9 compression function is enabled. For a
point-to-multipoint frame relay interface or subinterface, whether to perform
FRF.9 compression is determined by the configuration to create static address
mapping. Refer to “fr map ip” on page 396.
This command is only valid for data messages and IARP messages but not LMI
messages.
Only when the frame relay packets type of the interface is IETF, can frame relay
compression take effect. When this command is configured, the system will
automatically change the packet type of the interface into IETF if the frame relay
packets type of an interface is not IETF.
Example # Enable frame relay compression on the point-to-point frame relay subinterface
Serial 2/1.1.
<Sysname> system-view
[Sysname] interface serial 2/1.1 p2p
[Sysname-Serial2/1.1] fr compression frf9
fr compression iphc
Syntax fr compression iphc