B. Auto-Provisioning Process
This switching device is setting-free (through auto-upgrade and configuration) and its upgrade
procedures are as follows:
1. The ISC DHCP server will recognize the device whenever it sends an IP address request to it,
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 when 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 right after.
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.
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