D-Link DI-1750 Reference Manual page 504

Input address，display：
(00)<1-FFFFFFFF>
Please Input the code of command to be excute(0-0): 0
Select 0，input xid
14.3.10 Set the Largest SDLC Information-Frame Size
Generally, the router and the SDLC device with which it communicates should support the same
maximum SDLC I-frame size. The larger this value, the more efficient the line usage, thus increasing
performance.
After the SDLC device has been configured to send the largest possible I-frame, you must configure
the router to support the same maximum I-frame size. The default is 265 bytes. The maximum value
the software can support must be less than the value of the LLC2 largest frame value defined when
setting the largest LLC2 I-frame size.
To set the largest SDLC I-frame size, use the following command in interface configuration mode:
sdlc sdlc-largest-frame address size
Select 28 item from listing, display:
(00)K
......
(12)sdlc-largest-frame Set max size of received or sent I-frame by station
......
Please Input the code of command to be excute(0-16): 12
Input 12，select sdlc-largest-frame item，display：
(00)<1-FE>
Please Input the code of command to be excute(0-0): 0
Input 0，display：
Please input a digital number:Please input a string:
Input address，display：
(00) <0-1500>
Please Input the code of command to be excute(0-0): 0
Select 0，and input size
14.3.11 Monitor SDLC Stations
To monitor the configuration of SDLC stations to determine which SDLC parameters need adjustment,
use the following command in EXEC mode:
show interfaces
Input show command , display;
(00)alias alias for command
......
(19)interface interface status and configuration
......
Please Input the code of command to be excute(0-47): 19
Input 19，select interface item ，display：
(00)FastEthernet FastEthernet interface
(01)Ethernet Ethernet interface
(02)Serial Serial interface
(03)Async Asynchronous interface
(04)Null Null interface
XID of secondary station in HEX format
Command
The size of the sending window
SDLC Address in Hex
Largest I-frame size
Command
Model Name
Set the largest I-frame size that can be sent or received
by the designated SDLC station.
Display SDLC station configuration information.
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