Reference Guide

algorithm. This protocol is more ecient and scalable than vector-distance routing protocols. OSPF
features include least-cost routing, ECMP routing, and load balancing. Although OSPF requires CPU
power and memory space, it results in smaller, less frequent router table updates throughout the
network. This protocol is more ecient and scalable than vector-distance routing protocols.
OSPFv3
Open Shortest Path First version 3 is one of the routing protocols used with IPV6 and is similar to OSPF.
PEAP
Protected Extensible Authentication Protocol is an IETF draft standard to authenticate wireless LAN
clients without requiring them to have certificates. In PEAP authentication, first the user authenticates
the authentication server, then the authentication server authenticates the user. If the first phase is
successful, the user is then authenticated over the SSL tunnel created in phase one using EAP-Generic
Token Card (EAP-GTC) or Microsoft Challenged Handshake Protocol Version 2 (MSCHAP V2). (See also
EAP-TLS/EAP-TTLS.)
PoE
The Power over Ethernet standard (IEEE 802.3af) defines how power can be provided to network
devices over existing Ethernet connections, eliminating the need for additional external power supplies.
QoS
Quality of Service is a technique that is used to manage network resources and guarantee a bandwidth
relationship between individual applications or protocols. A communications network transports a
multitude of applications and data, including high-quality video and delay-sensitive data such as real-
time voice. Networks must provide secure, predictable, measurable, and sometimes guaranteed
services. Achieving the required QoS becomes the secret to a successful end-to-end business solution.
RADIUS
RADIUS is a client/server protocol and software that enables remote access servers to communicate
with a central server to authenticate dial-in users and authorize their access to the requested system or
service. RADIUS allows a company to maintain user profiles in a central database that all remote servers
can share. It provides better security, allowing a company to set up a policy that can be applied at a
single administered network point. With RADIUS, you can track usage for billing and for keeping
network statistics.
RIP
This IGP vector-distance routing protocol is part of the TCP/IP suite and maintains tables of all known
destinations and the number of hops required to reach each. Using Routing Information Protocol,
routers periodically exchange entire routing tables. RIP is suitable for use only as an IGP.
SNMP
Simple Network Management Protocol is a standard that uses a common software agent to remotely
monitor and set network configuration and runtime parameters. SNMP operates in a multivendor
environment, and the agent uses MIBs, which define what information is available from any manageable
network device. You can also set traps using SNMP, which send notifications of network events to the
system log.
SNTP
Glossary
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