Ethernet Services

Original instructions

Introduction

The BMENOS0300 network option switch provides the following Ethernet services:

HTTP web page server
SNMP network management agent
QoS message priority tagging
DHCP client for IP address assignment
FTP server, for firmware upgrade

As implemented in the BMENOS0300 network switch module, all services are pre-configured, and do not require custom configuration.

HTTP Web Page Server

The BMENOS0300 network switch module includes a Hypertext Transfer Protocol (HTTP) server. Use the server to access the module’s web pages for the purpose of monitoring and diagnosing the module. All web pages are read-only. The server provides easy access to the module from standard internet browsers.

The HTTP web pages are accessed using the IP address of the module.

SNMP Network Management Agent

The BMENOS0300 network switch module includes an SNMP v1 agent. An SNMP agent is a software component running on the module that allows access to the module's diagnostic and management information via the SNMP service. SNMP browsers, network management software, and other tools typically use SNMP to access this data. The SNMP agent is read-only.

The SNMP agent is accessed using the IP address of the module.

QoS Message Priority Tagging

The BMENOS0300 network switch module supports the OSI layer 3 Quality of Service (QoS) standard defined in RFC-2475, by accepting and re-transmitting Ethernet packets that contain a differentiated services code point (DSCP). The QoS tags are added to Ethernet packets by other devices that support QoS configuration.

DHCP Client

The BMENOS0300 network option switch includes a DHCP client. The purpose of the DHCP client is to receive, from a DHCP server, an IP address for Ethernet network communications. When powered up, the module sends a request, based on the module’s device name, to the DHCP server resident in the . The DHCP server delivers an IP address to the module, if the DHCP server has been configured to do so. If not, the module assigns itself an IP address based on its MAC Address.

FTP Server

The BMENOS0300 network option switch includes an FTP server. The FTP server is continuously enabled.

The FTP server is accessed using the IP address of the module.

(hypertext transfer protocol) A networking protocol for distributed and collaborative information systems. HTTP is the basis of data communication for the web.

(simple network management protocol) Protocol used in network management systems to monitor network-attached devices. The protocol is part of the internet protocol suite (IP) as defined by the internet engineering task force (IETF), which consists of network management guidelines, including an application layer protocol, a database schema, and a set of data objects.

(quality of service) The practice of assigning different priorities to traffic types for the purpose of regulating data flow on the network. In an industrial network, QoS is used to provide a predictable level of network performance.

(dynamic host configuration protocol) An extension of the BOOTP communications protocol that provides for the automatic assignment of IP addressing settings, including IP address, subnet mask, gateway IP address, and DNS server names. DHCP does not require the maintenance of a table identifying each network device. The client identifies itself to the DHCP server using either its MAC address, or a uniquely assigned device identifier. The DHCP service utilizes UDP ports 67 and 68.

(file transfer protocol) A protocol that copies a file from one host to another over a TCP/IP-based network, such as the internet. FTP uses a client-server architecture as well as separate control and data connections between the client and server.

(central processing unit) The CPU, also known as the processor or controller, is the brain of an industrial manufacturing process. It automates a process as opposed to relay control systems. CPUs are computers suited to survive the harsh conditions of an industrial environment.