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454 CHAPTER 26: LAPB AND X.25 CONFIGURATION COMMANDS
The default is 200.
When the data traffic is too heavy, you can use this command to extend the
receiving queue and sending queue of the X.25 VC to avoid data loss that may
affect transmission performance. Note that modifying this parameter would not
affect the existing data queue of VC. After changing the parameter, you need to
restart the port with the shutdown/undo shutdown command and this will
clear the current SVCs and reset the PVCs, thus change the data queue of all the
VCs.
Example # Set the VC data queue length of the X.25 interface Serial 2/0 to 75 packets.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] x25 queue-length 75
x25 receive-threshold
Syntax x25 receive-threshold count
undo x25 receive-threshold
View Interface view
Parameter count: Number of packets that can be received before acknowledgement, in the
range 0 to input window size. If it is set to 0 or the input window size, this
function will be disabled. If it is set to 1, X.25 of the device will send an
acknowledgement for each correctly received packet.
Description Use the x25 receive-threshold command to set the maximum number of
packets that can be received before X.25 sends the acknowledged packet.
Use the
undo x25 receive-threshold command to restore the default.
The default is 0, that is, the function is disabled.
With this function enabled, the device can send acknowledgement to the peer
upon the receipt of some correct packets, even if the input window is not yet full.
If data traffic is normal, you may pay more attention to the response speed, and
then you can appropriately adjust this parameter to meet the requirement.
Related command: x25 window-size.
Example # Specify that each VC on the X.25 interface Serial 2/0 acknowledges each
correctly received data packet.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] x25 receive-threshold 1