Siemens 40, 80, 60, 20 manual Subnet Mask, Switch

Glossary

SNMP

Simple Network Management Protocol. Used for monitoring, controlling, and administra- tion of network and network devices.

SNTP

Simple Network Time Protocol. Used to synchronize the time of a terminal device with a timeserver.

Subnet Mask

To discern the network part from the host part of an ->IP address, a device performs an AND operation on the IP address and the network mask. The network classes A, B, and C each have a subnet mask that demasks the relevant bits: 255.0.0.0 for Class A, 255.255.0.0 for Class B and 255.255.255.0 for Class C. In a Class C network, for instance, 254 IP addresses are available.

Switch

Network device that connects multiple network segments and terminal devices. The for- warding of data packets is based on ->MAC Addresses: data targeted to a specific device is directed to the switch port that device is attached to.

T

TCP

Transfer Control Protocol. The protocol belongs to the transport layer and establishes a connection between two entities on the application layer. It guarantees reliable and in-order delivery of data from sender to receiver, as opposed to ->UDP.

TLS

Transport Layer Security. Ensures privacy between communicating applications. Typically, the server is authenticated, but mutual authentication is also possible.

U

UDP

User Datagram Protocol. A minimal message-oriented transport layer protocol used espe- cially in streaming media applications such as ->VoIP. Reliability and order of packet deliv- ery are not guaranteed, as opposed to ->TCP, but ->UDP is faster and more efficient.

URI

Uniform Resource Identifier. A compact string of characters used to identify or name a re- source.

URL

Uniform Resource Locator. A special type of ->URI which provides means of acting upon or obtaining a representation of the resource by describing its primary access mechanism or network location.

X-6	A31003-O1010-M100-9-76A9, 05/05/2008
	HiPath 8000 - OpenStage Family, Administration Manual