R2511-HP MSR Router Series Layer 2 - WAN Command Reference(V5)

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(lowest incoming-only channel) must also be set to 0, which indicates that the incoming-only channel
section is disabled.
in-channel loc hoc: Specifies the lowest and highest outgoing-only channels of X.25 virtual circuit. The
value ranges for loc and hoc are both 0 to 4095. If hoc (highest outgoing-only channel) is set to 0, loc
(lowest outgoing-only channel) must also be set to 0, which indicates that the outgoing-only channel
section is disabled.
Usage guidelines
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). Configure the range correctly according to your ISP's
requirement.
Examples
# 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
Use x25 window-size to set the sizes of input and output windows on the X.25 interface.
Use undo x25 window-size to restore their default values.
Syntax
x25 window-size input-window-size output-window-size
undo x25 window-size
Default
The sizes of input and output windows on the X.25 interface are both 2.
Views
Interface view
Default command level
2: System level
Parameters
input-window-size: Size of input window. When X.25 window modulo is 8, the value range is 1 to 7.
When X.25 window modulo is 128, the value range is 1 to 127.
output-window-size: Size of output window. When X.25 window modulo is 8, the value range is 1 to 7.
When X.25 window modulo is 128, the value range is 1 to 127.
Usage guidelines
The input-window-size determines 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-size determines 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.