McDATA 3000 Router, RS-232, Simple Network, Management Protocol, Small Form-Factor, Pluggable

Glossary

PVC	Abbreviation for permanent virtual circuit, a virtual circuit that is
	permanently available. The only difference between a PVC and a
	switched virtual circuit (SVC) is that an SVC must be reestablished
	each time data is to be sent. Once the data has been sent, the SVC
	disappears. PVCs are more efficient for connections between hosts
	that communicate frequently.
router	The central switching device of the Internet, corporate Intranets, and
	WANs. A router is a highly intelligent device that connects like and
	unlike local area networks. It connects to Metropolitan Area
	Networks such as X.25, Frame Relay, and ATM. Routers are
	protocol sensitive, typically supporting multiple protocols.
RS-232	A set of standards developed by the EIA (Electrical Industries
	Association) that defines the mechanical and electrical
	characteristics for connecting DTE and DCE communications
	devices. It defines what the interface does, circuit functions and their
	corresponding connector pin assignments. The most commonly used
	RS-232 interface is ideal for the data transmission range of up to 20
	Kbps for up to 50 feet.
SAN	See Storage Area Networking.
SFP	See Small Form-Factor Pluggable
Simple Network	A common method by which network management applications can
Management Protocol	query a management agent using a support MIB. SNMP operates at
	the OSI Application layer.
Small Form-Factor	Optical modular transceivers that are hot-swappable. They offer
Pluggable	high speed and physical compactness, and are designed for use with
	small form factor connectors.
SNMP	See Simple Network Management Protocol.
SONET	Synchronous Optical Network, a standard for connecting fiber-optic
	transmission systems. SONET was proposed by Bellcore in the
	middle 1980s and is now an ANSI standard. SONET defines
	interface standards at the physical layer of the OSI seven-layer
	model. The standard defines a hierarchy of interface rates that allow
	data streams at different rates to be multiplexed. SONET establishes
	Optical Carrier (OC) levels from 51.8 Mbps (about the same as a T-3
	line) to 2.48 Gbps. Prior rate standards used by different countries
	specified rates that were not compatible for multiplexing. With the
	implementation of SONET, communication carriers throughout the
	world can interconnect their existing digital carrier and fiber optic
	systems. The international equivalent of SONET, standardized by
	the ITU, is called SDH.
Static Route	A route that is manually entered into a routing table. Static routes
	take precedence over routes chosen by dynamic routing protocols.
	See Static Routing.

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