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TCP/IP | Description | ||
Setting | |||
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DHCP | At | ||
| server. By default, the number of retries is unlimited. | ||
| • If the cooling unit receives a valid response, by default it requires the APC cookie from | ||
| the DHCP server in order to accept the lease and start the network services. | ||
| • If the cooling unit finds a DHCP server, but the request to that server fails or times out, | ||
| the cooling unit stops requesting network settings until it is restarted. | ||
| • If a DHCP server responds with an invalid offer (for example, the offer does not | ||
| contain the APC Cookie), the cooling unit accepts the lease from that server on the last | ||
| request of the sequence and then immediately releases that lease. This prevents the | ||
| DHCP server from reserving the IP address associated with its invalid offer. | ||
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| For more information on what a valid response requires, see “DHCP response | |
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| options” on page 39. | |
| To specify values other than the defaults, click Next>> to access the DHCP | ||
| Configuration page:1 | ||
| • Require vendor specific cookie to accept DHCP Address: To disable the | ||
| requirement that the DHCP server provide the APC cookie, clearclear this | ||
| • 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. | ||
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DHCP and | The default setting. The cooling unit tries to obtain its TCP/IP settings from a BOOTP | ||
BOOTP | server first, and then, if it cannot discover a BOOTP server, from a DHCP server. If it | ||
| obtains its TCP/IP settings from either server, it switches this setting from the default to | ||
| BOOTP or DHCP, depending on the type of server that supplied the TCP/IP settings to | ||
| the cooling unit. | ||
| Click Next>> to access and configure the same settings that are available on the | ||
| BOOTP Configuration and DHCP Configuration pages1 and to specify that the | ||
| DHCP and BOOTP setting be retained after either type of server provides the TCP/IP | ||
| values. | ||
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1The default values for these three settings on the configuration pages generally do not need to be changed:
•Vendor Class: APC
•Client ID: The MAC address of the cooling unit, which uniquely identifies it on the local area network (LAN)
•User Class: The name of the application firmware module
38 | InRow RC/RD/RP (600 mm) User’s Guide |