USER’S GUIDE switched rack pdu
®
TCP/IP options. The Switched Rack PDU uses the following options within a valid DHCP response to define its TCP/IP settings:
•IP Address (from the yiaddr field of the DHCP response): Provides the IP address that the DHCP server is leasing to the PDU.
•Subnet Mask (option 1): Provides the subnet mask value needed by the PDU to operate on the network.
•Default Gateway (option 3): Provides the default gateway address needed by the PDU to operate on the network.
•Address Lease Time (option 51): Identifies the length of time for the lease associated with the identified IP Address.
•Renewal Time, T1 (option 58): Identifies how long the PDU must wait after an IP address lease is assigned before it can request a renewal of that lease.
•Rebinding Time, T2 (option 59): Identifies how long the PDU must wait after an IP address lease is assigned before it can seek to rebind that lease.
Miscellaneous options. The Switched Rack PDU uses the following options within a valid DHCP response to define NTP, DNS, hostname, and domain name settings:
•NTP Server, Primary and Secondary (option 42): Identifies up to two NTP servers that can be used by the PDU.
•NTP Time Offset (option 2): Specifies the offset, in seconds, of the subnet for the PDU from Coordinated Universal Time (UTC).
•DNS Server, Primary and Secondary (option 6): Identifies one or two DNS servers that can be used by the PDU.
•Host Name (option 12): Identifies the hostname (maximum length of 32 characters) to be used by the PDU.
•Domain Name (option 15): Identifies the domain name (maximum length of 64 characters) to be used by the PDU.
75
