3Com MSR 30, MSR 50 manual X25 receive-threshold, Related command x25 window-size

454CHAPTER 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-thresholdcommand to set the maximum number of packets that can be received before X.25 sends the acknowledged packet.

Use the undo x25 receive-thresholdcommand 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