The OSN3500 device uses the COM port to change the subnet mask and IP address of the network element. The Optix OSN3500 sets the IP address of the network element should ensure that the subnet mask of the network port set is valid, otherwise, the subnet mask adopts the network segment mask of the IP address.

Problem Description

A new OSN 3500 device is built in one of the company's bureaus, and the IP address needs to be changed to 199.2.1.XX, and the subnet mask is 255.255.0.0.

The default IP address of OSN 3500 device is 129.9.0.XX, and the subnet mask is 255.255.0.0, so you only need to modify the IP address. Login to OSN 3500 with Navigator and send: cm-set-ip: 199.2.1.XX; after sending, the IP address of the OSN 3500 device changes to 199.2.1.XX, which is successful. But at the same time, the subnet mask also changes to 255.255.255.0; then use: cm-set-submask: 255.255.0.0; modify the subnet mask, and it fails.

At this time, the IP address of the device is: 199.2.1.XX; the subnet mask is: 255.255.255.0.

Alarm Message

No

Processing

First of all, use telnet to log in to the main control board, OSN3500 main control board in slot 17, 18, then its IP is 192.168.0.17 or 18, see which one is the main use. Laptop ip set to 192.168.0.XX

1) Set the subnet mask and IP address under telnet, for example, set the subnet mask to 255.255.0.0:

sp dwSaveSPSubMask,0xffff0000;

Syntax: sp dwSaveSPSubMask, subnet mask (hexadecimal);

Sets the IP address to 199.2.1.146:

sp dwSaveSPIP,0xc7020192.

Syntax: sp dwSaveSPIP, IP address (hexadecimal)

(2) in the telnet query subnet mask and IP address, function return value is the subnet mask and IP address

dwGetSPSubMask ;

dwGetSPIP ;

3) After setting successfully, query and confirm in reboot reset to take effect;

Root cause

Setting the IP address of the network element should ensure that the set subnet mask of the network interface is valid, otherwise the subnet mask adopts the network segment mask of the IP address.

The defect of 5.0 platform operating system, if you need to change the IP address and subnet mask of the network element at the same time, you need to set the subnet mask of the network element first, and then set the IP address of the network element. However, the user needs the subnet mask of 255.255.0.0, which is the same as the default subnet mask of the device, and the setting is invalid.

Suggestion and Summary

None