Rockwell Automation 1783-EMS08T Stratix 6000 Ethernet Managed Switch User Manual - Manual (Page 10)

10 Rockwell Automation Publication 1783-UM001D-EN-P - January 2013
Preface
Terminology Refer to this table for terms used in this publication.
Table 1 - Managed Switch Terminology
Term Description
1783-EMS All references to 1783-EMS in this manual refer to catalog numbers 1783-EMS04T and 1783-EMS08T.
Auto-MDIX Automatic Medium-dependent Interface Crossover.
Allows the switch to detect the required cable type (straight-through or crossover) for copper Ethernet connections and configures the interfaces
accordingly.
BOOTP Commonly used with Allen-Bradley Ethernet products, the BOOTP protocol is used by a client machine to locate its IP address and network mask.
DHCP Dynamic Host Configuration Protocol.
A network protocol that is used to configure devices, so that they can communicate on an IP network. A client machine uses this protocol to acquire
configuration information, such as an IP address and default gateway, from a server running the protocol. The client then uses this information to
configure itself.
DNS Domain Name Server.
Translates domain names into IP addresses, for example, www.example.com can translate to 192.168.100.100.
Domain A group of computers and devices on a network that are controlled as a unit with common rules and procedures.
IGMP Internet Group Management Protocol.
A protocol that manages how adapters and other components join and leave multicast groups. IGMP snooping is a feature of IGMP that allows Ethernet
switches to look (snoop) inside packets to determine which destinations really need to receive the data.
QoS Quality of service.
A method of managing network resources through the classification of Ethernet traffic into high and low priority queues.
SMS Short Message Service.
A communication service that allows text messaging between mobile phones.
SNMP Simple Network Management Protocol.
A protocol that exchanges messages with devices on a network for the purpose of monitoring the devices.SNMP enables a switch to be remotely
managed through other network management software.
Spanning Tree Refers to Rapid Spanning Tree Protocol (RSTP) or Spanning Tree Protocol (STP).
Used with network topologies that provide more than one physical path between two devices, spanning tree protocol manages path redundancies
while preventing undesirable loops in the network. If a fault should occur on an active port, the switch will begin transmitting out one of the blocked
ports.
TCP Transmission Control Protocol.
TCP enables two hosts to establish a connection and exchange streams of data.
TCP guarantees delivery of data and also guarantees that packets are delivered in the same order in which they were sent.
UDP User Datagram Protocol.
This protocol offers a minimal transport service. UDP is used by applications that do not require the level of service of TCP or use communication
services (for example, multicast or broadcast delivery) not available from TCP.
An application program running over UDP must deal directly with end-to-end communication anomalies that a connection-oriented protocol would
have handled - for example, retransmission for reliable delivery, packetization and reassembly, flow control, and congestion avoidance, when these are
required.
This is commonly seen with I/O type devices that send out information at an RPI rate.
VLAN Virtual local-area network.
A logical segment of network users and resources grouped by function, team, or application. This segmentation is without regard to the physical
location of the users and resources.