Configure Network Settings
Configure TCP/IP and communication settings for IPv4 and IPv6
Path: Configuration > Network > TCP/IP > IPv4
View the current IPv4 address, subnet mask, default gateway, MAC address, and boot mode of the Rack ATS.
For information on DHCP and DHCP options, see RFC2131 and RFC2132.
DHCP response options: Each valid DHCP response contains options that provide the TCP/IP settings that
the Rack ATS needs to operate on a network, and other information that affects the operation of the Rack ATS.
Vendor Specific Information (option 43): The Rack ATS uses this option in a DHCP response to determine
whether the DHCP response is valid. This option contains an APC-specific option in a TAG/LEN/DATA format,
called the APC Cookie. This is disabled by default.
• APC Cookie. Tag 1, Len 4, Data “1APC”
Option 43 communicates to the Rack ATS that a DHCP server is configured to service devices.
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
Setting Description
IPv4 Enable or disable IPv4 with this check box.
Manual Configure IPv4 manually by entering the IP address, subnet mask, and default gateway.
BOOTP A BOOTP server provides the TCP/IP settings. At 32-second intervals, the Rack ATS requests
network assignment from any BOOTP server:
• If the Rack ATS receives a valid response, it starts the network services.
• If the Rack ATS finds a BOOTP server, but a request to that server fails or times out, the Rack ATS
stops requesting network settings until it is restarted.
• By default, if previously configured network settings exist, and the Rack ATS receives no valid
response to five requests (the original and four retries), it uses the previously configured settings so
that it remains accessible.
Click Next>> to access the BOOTP Configuration page to change the number of retries or the action
to take if all retries fail:
• Maximum retries: Enter the number of retries that will occur when no valid response is received, or
zero (0) for an unlimited number of retries.
• If retries fail: Select Use prior settings (the default) or Stop BOOTP request.
DHCP The default setting. At 32-second intervals, the Rack ATS requests network assignment from any
DHCP server.
• If the Rack ATS receives a valid response, it does not (as previously) require the APC cookie from
the DHCP server in order to accept the lease and start the network services.
• If the Rack ATS finds a DHCP server, but the request to that server fails or times out, it stops
requesting network settings until it is restarted.1
Require vendor specific cookie to accept DHCP Address: By selecting this check box, you can
require the DHCP server to provide a cookie which supplies information to the Rack ATS.
NOTE: The default values for these three settings on configuration pages generally do not need to be changed: • Vendor Class: APC
• Client ID: The MAC address of the ATS, which uniquely identifies it on the local area network (LAN)
• User Class: The name of the application firmware module
