To determine the IP address configured on your print server, use the HP Jetdirect configuration page. See HP Jetdirect configuration pages on page 139.

Default IP on wireless and wired print servers

Wired and wireless print servers can have different default IP configuration results:

When turned on, a print server in a factory default state that is connected to a network through a cable (wired), retrieves its IP settings by systematically using BOOTP, DHCP, and RARP. If configuration fails, a default IP address is assigned.

A wired/wireless print server in a factory default state that is not connected by a cable initially has only a wireless ad hoc connection available. Retrieval of IP settings from a network is limited to a few seconds, during which a single BOOTP request is transmitted, and broadcast packets are sensed. Because a response from a BOOTP server on an ad hoc network is unlikely, and the number of broadcast packets sensed are minimal, a default IP configuration using link-local addressing is likely.

The IP configuration can change when the wireless print server is connected to a DHCP network because, sending DHCP requests is enabled by default even after a link-local address is assigned.

Configuration tools that require a specific default IP address on the print server for initial communication might not work without modification. For the default IP address settings actually configured on the print server, see the HP Jetdirect configuration page.

Default IPv4 address configuration options

Default IPv4 parameter

A default IP configuration parameter on the print server controls how the default IPv4 address is assigned. Whenever the print server is unable to obtain an IP address during a forced TCP/IP reconfiguration (for example, when manually configured to use BOOTP or DHCP), this parameter determines the default IPv4 address to use.

When the print server is in a factory default state, this parameter is undefined.

If the print server is initially configured with a default IPv4 address by using either a link-local IPv4 address or the legacy default 192.0.0.192 IP address, the default IP parameter is set to either Auto IP or Legacy Default IP to match.

You can change the Default IP parameter by using a supported configuration tool, such as Telnet, a Web browser, a printer control panel, or SNMP management applications.

DHCP requests enable/disable

When a default IPv4 address is assigned, you can configure the print server to send periodic DHCP requests, which are used to retrieve IP configuration settings from a DHCP server on the network. By default, this parameter is enabled, allowing transmission of DHCP requests. To disable this parameter, use a supported configuration tool such as Telnet, a Web browser, or SNMP management applications.

When an HP Jetdirect Wireless Print Server in a factory default state (without a network connection) is initially turned on, it likely self-assigns a link-local IP address. If a network connection to a DHCP server-based network is made, the IP address might be reconfigured because DHCP requests on the print server are enabled by default.

20 Chapter 3 TCP/IP configuration

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HP 640n Print Server manual Default IP on wireless and wired print servers, Default IPv4 address configuration options