D-Link DI-1750 Reference Manual page 79

(00)WORD
Please Input the code of command to be excute(0-0): 0
Please input a string:123456 （input the x121 address）
Will you excute it? (Y/N):y
For an example of configuring the X.25 interface address, see the section "Typical X.25 Configuration
Example" later in this chapter.
5.5.8 Set default flow control values
Setting correct default flow control parameters of window size and packet size is essential for correct
operation of the link because X.25 is a strongly flow controlled protocol. However, it is easy to overlook
this task because many networks use standard default values. Mismatched default flow control values
will cause X.25 local procedure errors, evidenced by Clear and Reset events.
To configure flow control parameters, complete the tasks in the following sections.
♦ set default window size
♦ set default packet size
To configure X.25 flow control values, perform the following commands in interface configuration mode:
Command
x25 psize size
x25 wsize packets
Key Word:
U(undo)
......
(18)psize
......
(25)wsize
(26)pad-access
Please Input the code of command to be excute(0-26): 18 （you can also choose 25 to set the wsize）
Key Word:
Q(quit)
(00)<128-1024>
Please Input the code of command to be excute(0-0): 0
Please input a digital number:Please input a string:512 （input packet size）
Will you excute it? (Y/N):y
Note:
Because the X.25 protocol requires the DTE and DCE to have identical default maximum packet sizes and default window
sizes, changes made to the window and packet sizes when the interface is up are held until the X.25 protocol restarts the
packet service.
5.5.9 Configure additional X.25 interface parameters
Some X.25 applications have less common or special needs. Several X.25 parameters are available to
modify the X.25 protocol behavior for these applications.
To configure less common X.25 interface parameters for these special needs, perform the tasks in the
following sections, as needed:
♦ Set the X.25 level three timers
♦ Set the X.25 address
1. Set the X.25 level 3 timers
To set the retransmission timers, perform any of the following tasks in interface configuration mode:
Local X.121 address
Function
Set the packet size(Byte)
Set the window size
D(default) Q(quit)
Set X.25 max packet size
Set X.25 level 3 window size
Accept only PAD connections from statically mapped X25 hosts
Maximum input packet size (power of 2)
Model Name
Range
128,256,512,1024
2-（modulo-1）
- 77 -
Default
128
2