Avaya 1600 manual Poisoned, Reverse, Router, Subnet Mask

Presentation layer – responsible for data structures used by networked applications.

Application layer - networked software applications such as e-mail, Telnet, and ftp.

Packet Logical grouping of information that includes a header containing control information and (usually) user data. Packets refer to network layer units of data, with messages divided into several packets. Some networks use fixed packet sizes; others use variable packet sizes. Packets typically have standard header information that identifies the packet. In contrast, frames contain only data; information about the frames transmits on the control plane.

The terms datagram, frame, message, and segment describe logical information groupings at various layers of the OSI reference model and in various technology circles.

PPPPoint-to-Point Protocol. a successor to SLIP that provides router-to-router and host-to-network connections over synchronous and asynchronous circuits.

Poisoned	RIP feature to sets routes learned on the same port
Reverse
	as the transmitted RIP message an infinite distance.
	Prevents the propagation of routes from crashed
	routers through the network.
PVC	Permanent Virtual Circuit. PVCs save	bandwidth
	associated with circuit establishment and tear down
	in situations where certain virtual circuits must exist
	all the time.
RIP	Routing Information Protocol. Internet protocol used
	to exchange routing information within a system.
	RIP uses hop count as a routing metric.
Router	Network layer device that uses one or more metrics
	to determine the optimal path to forward network
	traffic. Routers forward packets from one network to
	another based on network layer information. a
	router may connect networks using various protocols
	by encapsulating data within another network's
	packet format or by removing layers of packet
	formatting.
SNMP	Simple Network Management Protocol.	Network
	management protocol used in TCP/IP networks.
	SNMP provides a way to monitor and control
	network devices, and to manage configurations,
	Statistics collection, performance, and security.
Subnet Mask	32-bit address mask that indicates the bits of an IP
	address used for the subnet address.

Avaya, Inc. - 197 - PARTNER ACS 1600 DSL module User Guide