Installation manual

Installation Manual
7
DHCP. You can use an RFC2131/RFC2132-compliant DHCP server to
configure the TCP/IP settings for the Network Management Card.
This section summarizes the Network Management Card’s
communication with a DHCP server. For more detail about how a
DHCP server can configure the network settings for a Network
Management Card, see “DHCP Configuration” in the Network
Management Card User’s Guide on the Utility CD.
1. The Network Management Card sends out a DHCP request that uses
the following to identify itself:
– A Vendor Class Identifier (APC by default)
– A Client Identifier (by default, the MAC address of the Network
Management Card)
– A User Class Identifier (by default, the identification of the
application firmware installed on the Network Management Card)
2. A properly configured DHCP server responds with a DHCP offer that
includes all the settings that the Network Management Card needs for
network communication. The DHCP offer also includes the Vendor
Specific Information option (DHCP option 43). By default, the
Network Management Card ignores DHCP offers that do not
encapsulate the APC cookie in DHCP option 43 using the following
hexadecimal format:
Option 43 = 01 04 31 41 50 43
where
–the first byte (01) is the code
– the second byte (04) is the length
– the remaining bytes (31 41 50 43) are the APC cookie.
See your DHCP server documentation to add code to the Vendor
Specific Information option.
Note: To disable the requirement that a DHCP offer include the
APC cookie, clear the check box Require vendor specific cookie to
accept DHCP Address in the Web interface: Administration >
Network>TCP/IP>DHCP.
Alternately, at the command line interface, use this command to
disable the DHCP cookie requirement : boot -c disable