3Com 3C17300-US Implementation Manual

Contents

117bridges, in that they connect LANs of a different type; however theyconnect more LANs than a bridge and are generally more sophisticated.Switch Database A database that is stored by a switch to determine if a packet shouldbe forwarded, and which port should forward the packet if it is to beforwarded. Also known as Forwarding Database.TCP/IP Transmission Control Protocol/Internet Protocol. This is the name fortwo of the most well-known protocols developed for theinterconnection of networks. Originally a UNIX standard, TCP/IP is nowsupported on almost all platforms, and is the protocol of the Internet.TCP relates to the content of the data travelling through a network —ensuring that the information sent arrives in one piece when it reachesits destination. IP relates to the address of the endstation to which datais being sent, as well as the address of the destination network.Telnet A TCP/IP application protocol that provides a virtual terminal service,letting a user log into another computer system and access a device asif the user were connected directly to the device.TFTP Trivial File Transfer Protocol. Allows you to transfer files (such assoftware upgrades) from a remote device using the local managementcapabilities of the Switch.traffic classification Traffic can be classified using one or more of types of traffic classifiers. Aclassifier detects the packet attributes and classifies the trafficaccordingly.traffic prioritization A system which allows data that has been assigned a high priority tobe forwarded through a switch without being obstructed by other data.unicast A packet sent to a single endstation on a network.VLAN Virtual LAN. A group of location- and topology-independent devicesthat communicate as if they are on the same physical LAN.VLAN tagging A system that allows traffic for multiple VLANs to be carried on a singlelink.WAN Wide Area Network. A communications network that covers a widearea. A WAN can cover a large geographic area, and may containseveral LANs within it.dua1730-0bAA03.book Page 117 Monday, July 11, 2005 11:14 AM