User`s manual

B. Auto-Provisioning Process

This switching device is setting-free (through auto-upgrade and configuration) and its upgrade

procedures are as follows:

1. ISC DHCP server will recognize the device when it receives an IP address request sent

by the device, and it will tell the device how to get a new firmware or configuration.

2. The device will compare the firmware and configuration MD5 code form of DHCP option

every time it communicates with DHCP server.

3. If MD5 code is different, the device will then upgrade the firmware or configuration.

However, it will not be activated immediately.

4. If the Urgency Bit is set, the device will be reset to activate the new firmware or

configuration immediately.

5. The device will retry for 3 times if the file is incorrect, and then it gives up until getting

another DHCP ACK packet again.