APC Battery Management System manual Dhcp response options, APC Cookie. Tag 1, Len 4, Data 1APC

Battery Management System

USER’S GUIDE

®

DHCP response options

Each valid DHCP response contains options that provide the TCP/IP settings a Management Card needs to operate on a network and other information that affects the Battery Management System’s operation.

The Management Card uses the Vendor Specific Information option (option 43) in a DHCP response to determine whether the DHCP response is valid.

Vendor Specific Information (option 43). The Vendor Specific Information option contains up to two APC-specific options encapsulated in a TAG/LEN/DATA format: the APC cookie and the Boot Mode Transition.

APC Cookie. Tag 1, Len 4, Data “1APC”

Option 43 communicates to the Management Card that a DHCP server has been configured to service APC devices. By default, the APC cookie must be present in this DHCP response option before a Management Card can accept the lease.

To disable the requirement of an APC cookie, see

Management Card settings for information on the DHCP

Cookie Is setting.

Following, in hexadecimal format, is an example of a Vendor Specific Information option that contains the APC cookie:

Option 43 = 0x01 0x04 0x31 0x41 0x50 0x43

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