3Com MSR 50, MSR 30 manual X25 window-size, Undo x25 window-size, 469

469

Description Use the x25 vc-rangecommand to set the upper and lower limits of X.25 VC range.

Use the undo x25 vc-rangecommand to restore their default values.

By default, the upper and lower limits of two-way channel are 1 and 1024, of incoming-only channel are both 0, and of outgoing-only channel are both 0.

By default, X.25 bans the incoming-only and outgoing-only channel sections and reserves only the double direction channel section (in the range 1 to 1024). Please configure the range correctly according to your ISP’s requirement.

Example # Configure the incoming-only, two-way and outgoing-only channel ranges as [1, 7], [8, 1024] and [0, 0] respectively.

<Sysname> system-view

[Sysname] interface serial 2/0

[Sysname-Serial2/0] x25 vc-range in-channel 1 7 bi-channel 8 1024

x25 window-size

Syntax x25 window-sizeinput-window-size output-window-size

undo x25 window-size

View Interface view

Parameter input-window-size: Size of input window. When X.25 window modulo is 8, its value ranges from 1 to 7. When X.25 window modulo is 128, its value ranges from 1 to 127.

output-window-size: Size of output window. When X.25 window modulo is 8, its value ranges from 1 to 7. When X.25 window modulo is 128, its value ranges from 1 to 127.

Description # Set calling request (indication) sending timer on the X.25 interface Serial2/0 to 100 seconds.

Use the undo x25 window-sizecommand to restore their default values.

The default sizes are both 2.

The input-window-sizedetermines the maximum number of correctly received packets before X.25 sends the acknowledgement information. As long as the bandwidth allows, the greater the window size, the higher the transmission efficiency.

The parameter out-window-sizedetermines the maximum number of data packets sent by X.25 before it receives the correct acknowledgment information. As long as the bandwidth allows, the greater the window size, the higher the transmission efficiency.