HPE FlexNetwork MSR Series Comware 5 Layer 2 - Wan Access Configuration Guide

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Over a low-speed frame relay links, long data frames might increase the transmission delay. The
FRF.12 fragmentation function fragments long data frames into small fragments, and guarantees
that the data frames are transmitted with a lower delay over a lower-speed link.
When data frames and voice frames are transmitted at the same time, long data frame transmission
occupies bandwidth for a long time, and might delay the voice frames or even cause the voice
frames to be dropped, affecting the voice quality. The FRF.12 fragmentation function decreases the
delay of voice frames, and improves the voice quality. With the FRF.12 fragmentation function
enabled, long data frames are fragmented into small fragments, and interleaved with voice frames,
so that voice frames are transmitted promptly and evenly and the transmission delay is reduced.
The FRF.12 fragmentation function is mutually exclusive with FRTS configured by using the fr
traffic-shaping command. For more information about FRTS, see HPE FlexNetwork MSR Router
Series Comware 5 ACL and QoS Configuration Guide.
To configure frame relay fragmentation:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface
interface-type
interface-number
N/A
3. Enable FRF.12
fragmentation on the
interface.
fr fragment
[ fragment-size ]
end-to-end
By default, FRF.12 fragmentation
is disabled.
NOTE:
The FRF.12 fragmentation function is not available on MFR interfaces.
Configuring DCE side frame relay
Configuring basic DCE side frame relay
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface
interface-type
interface-number
N/A
3. Enable frame relay on the
interface.
link-protocol fr
[
ietf
|
nonstandard
]
The default link layer protocol on
a WAN interface is PPP. If frame
relay is enabled with no operating
mode specified, the IETF
standard applies.
4. Configure the frame relay
interface type as DCE or
NNI.
fr interface-type
{
dce
|
nni
} The default setting is DTE.
5. Configure the frame relay
LMI protocol type.
fr lmi type
{
ansi
|
nonstandard
|
q933a
}
Optional.
The default setting is
q933a
.
6. Configure network side
N392.
fr lmi n392dce
n392-value
Optional.
The default setting is 3.
7. Configure network side
N393.
fr lmi n393dce
n393-value
Optional.
The default setting is 4.

HPE FlexNetwork MSR Series Specifications

General

Brand	HPE
Model	FlexNetwork MSR Series
Category	Network Router
Language	English