Ricoh SP 5100N ユーザーズマニュアル

TCP/IP environment

4.1

A TCP/IP network provides you with various protocols for using 
printing devices and managing various types of networked 
devices.

In this chapter, you will learn which management protocols are 
available in TCP/IP network environments, and how to print via 
your network print server using TCP/IP protocol.

Before beginning to print documents via your network printer, 
you need to check or configure some parameters using 
management protocols.

Dynamic Host Configuration Protocol (DHCP) is a 
communication protocol enabling network administrators to 
centrally manage and to automate the assignment of IP 

addresses in a network. In an IP network, each device needs a 
unique IP address. DHCP lets a network administrator 
supervise and distribute IP addresses from a central point and 

automatically sends a new IP address when a device is plugged 
into a different place in the network. 

Bootstrap Protocol (BOOTP) is UDP/IP-based protocol which 

allows a booting host to configure itself dynamically and 
without user supervision. BOOTP provides means to notify a 
host of its assigned IP address, the IP address of a boot server 

host, and other configuration information, such as the local 
subnet mask, the local time offset, and the addresses of default 
routers. Addresses of various Internet servers can also be 

transferred to a host using BOOTP. 

DHCP is active by factory default on your network print server. 
After boot up, the network print server will get an IP address 

automatically from the DHCP server, if one exists. To set an IP 
address manually, see page 2.2.

To enable or disable DHCP/BOOTP, use one of the following 
methods:

• Printer’s control panel: Refer to Network Menu settings in 

your printer user’s guide.

• Web Image Monitor SP 5100N: Select Network 

Settings Æ TCP/IP and select DHCP or BOOTP from the 

IP Address Assignment Method list.

Hypertext Transfer Protocol (HTTP) is an application layer 
protocol for distributed, collaborative, hypermedia information 

systems. It is a generic, stateless protocol which can be used 
for many tasks beyond its use for hypertext, such as with name 
servers and distributed object management systems. You are 

using HTTP when you connect your network printer via a web 
browser.

The Network Printer Card has a built-in web server, Web Image 

Monitor SP 5100N. You can configure and manage your network 
print server through Web Image Monitor SP 5100N using HTTP 
over TCP/IP.

Simple Network Management Protocol (SNMP), which is part of 
the TCP/IP protocol suite, is an application layer protocol that 
facilitates the exchange of management information between 

network devices. It enables network administrators to remotely 
monitor and configure network devices, find and solve network 
problems, and plan for network growth.

Network devices are monitored and controlled using four basic 
SNMP commands: 

• read: is used by a Network Management server to monitor 

network devices. The server examines different variables 
that are maintained by the devices.

• write: is used by a Network Management server to control 

managed devices. The server changes the values of 
variables stored within the devices.

• trap: is used by network devices to asynchronously report 

events to a Network Management server. When certain types 
of events occur, a device sends a trap to the specified server.

• Traversal operations: are used by a Network Management 

server to determine which variables a network device 
supports and to sequentially gather information in variable 
tables, such as a routing table.

To access your network print server using SNMP, Community 
Name/Access Permission pair must be properly specified. There 

are two access permission: read and write.

Assign the IP addresses of trap hosts and community names (IP 
addresses) of network devices in Web Image Monitor SP 5100N 

select Network Settings Æ SNMP. 

Web Image Monitor SP 5100N accesses, configures, and 

manages network devices using SNMP. You can use other MIB 
(Management Information Base) browser software, which 
allows you to access management information gathered from 

network devices.