Cisco Systems SRW248G4P User Manual
Glossary
48-Port 10/100 + 4-Port Ggabt Swtch wth WebVew and Power over Ethernet
Appendx B
Appendx B:
Glossary
Glossary
This glossary contains some basic networking terms you
may come across when using this product .
may come across when using this product .
WEB:
For additional terms, please visit the
glossary at www.lnksys.com/glossary
Access Mode - Specifies the method by which user access
is granted to the system .
is granted to the system .
Access Pont - A device that allows wireless-equipped
computers and other devices to communicate with a
wired network . Also used to expand the range of a wireless
network .
computers and other devices to communicate with a
wired network . Also used to expand the range of a wireless
network .
Access Profles - Allows network managers to define
profiles and rules for accessing the device . Access to
management functions can be limited to user groups,
which are defined by the following criteria:
profiles and rules for accessing the device . Access to
management functions can be limited to user groups,
which are defined by the following criteria:
Ingress interfaces
Source IP address and/or Source IP subnets .
ACE - Filters in Access Control Lists (ACL) that determine
which network traffic is forwarded . An ACE is based on the
following criteria:
which network traffic is forwarded . An ACE is based on the
following criteria:
Protocol
Protocol ID
Source Port
Destination Port
Wildcard Mask
Source IP Address
Destination IP Address
ACL (Access Control Lst) - Access Control Lists are
used to grant, deny, or limit access devices, features, or
applications .
used to grant, deny, or limit access devices, features, or
applications .
Auto-negotaton - Allows 10/100 Mbps or 10/100/1000
Mbps Ethernet ports to automatically establish the optimal
duplex mode, flow control, and speed .
Mbps Ethernet ports to automatically establish the optimal
duplex mode, flow control, and speed .
Back Pressure - A mechanism used with Half Duplex
mode that enables a port not to receive a message .
mode that enables a port not to receive a message .
Bandwdth - The transmission capacity of a given device
or network .
or network .
Bandwdth Assgnments - Indicates the amount of
bandwidth assigned to a specific application, user, and/or
interface .
bandwidth assigned to a specific application, user, and/or
interface .
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Baud - Indicates the number of signaling elements
transmitted each second .
transmitted each second .
Best Effort - Indicates that traffic is assigned to the lowest
priority queue, and packet delivery is not guaranteed .
priority queue, and packet delivery is not guaranteed .
Bt - A binary digit .
Boot - To start a device and cause it to start executing
instructions .
instructions .
Browser - An application program that provides a way to
look at and interact with all the information on the World
Wide Web .
look at and interact with all the information on the World
Wide Web .
Brdge - A device that connect two networks . Bridges are
hardware specific, however they are protocol independent .
Bridges operate at Layer 1 and Layer 2 levels .
hardware specific, however they are protocol independent .
Bridges operate at Layer 1 and Layer 2 levels .
Broadcast Doman - Devices sets that receive broadcast
frames originating from any device within a designated
set . Routers bind Broadcast domains, because routers do
not forward broadcast frames .
frames originating from any device within a designated
set . Routers bind Broadcast domains, because routers do
not forward broadcast frames .
Broadcast Storm - An excessive amount of broadcast
messages simultaneously transmitted across a network
by a single port . Forwarded message responses are
heaped onto the network, overloading network resources
or causing the network to time out .
messages simultaneously transmitted across a network
by a single port . Forwarded message responses are
heaped onto the network, overloading network resources
or causing the network to time out .
Burst - A packet transmission at faster than normal rates .
Bursts are limited in time and only occur under specific
conditions .
Bursts are limited in time and only occur under specific
conditions .
Burst Sze - Indicates the burst size transmitted at a faster
than normal rate .
than normal rate .
Byte - A unit of data that is usually eight bits long
Cable Modem - A device that connects a computer to the
cable television network, which in turn connects to the
Internet .
cable television network, which in turn connects to the
Internet .
CBS (Commtted Burst Sze) - Indicates the maximum
number of data bits transmitted within a specific time
interval .
number of data bits transmitted within a specific time
interval .
CIR (Commtted Informaton Rate) - The data rate is
averaged over a minimum time increment .
averaged over a minimum time increment .
Class Maps - An aspect of Quality of Service system that is
comprised of an IP ACL and/or a MAC ACL . Class maps are
configured to match packet criteria, and are matched to
packets in a first-fit fashion .
comprised of an IP ACL and/or a MAC ACL . Class maps are
configured to match packet criteria, and are matched to
packets in a first-fit fashion .
Combo Ports - A single logical port with two physical
connections, including an RJ-45 connection and a SFP
connection .
connections, including an RJ-45 connection and a SFP
connection .
Communtes - Specifies a group of users which retain the
same system access rights .
same system access rights .