APC Network Management Card AP9617 User's Guide download pdf (Page 121)

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USER’S GUIDE

network management card

115

DHCP response options

Each valid DHCP response contains options which provide the TCP/IP

settings that a Management Card needs to operate on a network, as well as

other information that affect the Management Card’s operation.

A 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 tells 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.

The format of a Vendor Specific Information option that contains the APC

cookie would look as follows (shown in hexadecimal format):

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

You can use the DHCP Cookie Is setting described in

Management Card settings to disable the APC cookie

requirement.

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APC Network Management Card AP9617 User's Guide Page 121