Cambridge SoundWorks P460 manual Udp, Uni, Vbr, Vci, Vidp

Glossary

Trap

Message sent by an SNMP agent to an NMS, console, or terminal to indicate the occurrence of a significant event, such as a specifically defined condition or a threshold that was reached. Similar to an alarm.

Tree View

A resizeable window containing a hierarchical representation of the modules and ports of the device.

UDP

User Datagram Protocol. Connectionless transport layer protocol in the TCP/IP protocol stack. UDP is a simple protocol that exchanges datagrams without acknowledgments or guaranteed delivery, requiring that error processing and retransmission be handled by other protocols.

UNI

User-Network Interface. The interface - defined as a set of protocols and traffic characteristics, such as cell structure - between the user and the ATM network.

Unicast

A single packet sent to a single network destination.

VBR

Variable Bit Rate. VBR is a QoS class for ATM networks. It is subdivided into a real time (RT) class and non-real time (NRT) class. VBR-RT is used for connections in which there is a fixed timing relationship between samples. VBR-NRT is used for connections in which there is no fixed timing relationship between samples, but that still need a guaranteed QoS.

VC

Refer to Virtual Channel on page 213, Virtual Circuit on page 213, and Virtual Connection on page 213.

VCI

Virtual Channel Identifier. A 16 bit value in the ATM cell header that provides a unique identifier for the Virtual Channel (VC) within a Virtual Path that carries a particular cell.

VIDP

VLAN Information Distribution Protocol. VIDP is a proprietary Avaya protocol running between Avaya P110 Device and Avaya M770 Device agents. A station’s VLAN information is distributed to all agents in order to use this information throughout the network.

212 Avaya P460 Reference Guide