# Attention (Protocol Settings)

#### When setting the IP address

NOTE
###### If you changed the IP address after installing the printer driver Specify the port to be used again in the printer driver. "Configuring a Computer that Performs Printing" ###### When using DHCP, BOOTP, or RARP One of the following can be used: DHCP, BOOTP, or RARP. When any of the settings is turned [On], the remaining two settings are automatically turned [Off]. Because it takes one to two minutes to check whether DHCP, BOOTP, and RARP are available, we recommend that you set the unused protocol(s) to [Off]. Each server or daemon (the DHCP server, BOOTP daemon, or RARP daemon) must be running on the network. Even if you are using DHCP, BOOTP, or RARP, specify the settings for [IP Address], [Subnet Mask], and [Gateway Address] manually. If you cannot obtain information from the servers of DHCP, BOOTP, and RARP, the values specified manually are used. After the printer restarts, the values obtained from DHCP, BOOTP, and RARP are displayed. (If the values have been specified previously, they overwrite the obtained ones.) ###### When using DHCP If you cycle the power of the printer, you may not be able to print. This is because a different IP address from the one that has been used is assigned. When using DHCP, consult your network administrator and perform either of the following settings. Specifying the DNS Dynamic Update function Specifying the settings so that the same IP address is always assigned when the printer starts up

#### When configuring the DNS Settings

IMPORTANT
###### DNS Dynamic Update DNS Dynamic Update is a function that adds the IP address of the device and the names specified as the host name and domain name to the DNS server automatically. This function can be used in the environment in which a Dynamic DNS server is being used. ###### When using the DNS Dynamic Update function You need to set the IP address, host name, and domain name of the DNS server.

#### When configuring the WINS Settings

IMPORTANT
###### WINS WINS (Windows Internet Name Service) is a service that maps NetBIOS names (names of computers or printers) to IP addresses. A WINS server is required to use WINS. ###### If [Scope ID] is specified The printer cannot communicate with the computers that have a different scope ID.

#### When configuring the Multicast Discovery Settings

NOTE
###### Multicast discovery This is a function that searches for certain devices using Service Location Protocol (SLP). By using the multicast discovery function, you can search for only the devices whose values in [Scope Name] are verified, using the service location protocol (SLP) from utility software, such as NetSpot Device Installer.

#### When configuring the SNTP Settings

NOTE
###### When the check box for [Use SNTP] is selected [Check NTP Server Connection] is displayed on the [TCP/IP Settings] page on the [Network]. When [Check NTP Server Connection] is clicked, the printer communicates with the specified NTP server, and the result of the communication is displayed in [NTP Server Connection Check Result]. [OK] is displayed if the printer communicated with the NTP server successfully, and [Error] is displayed if the printer could not communicate with the NTP server due to any reason such as a setting mistake or communication error.

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