Cisco Systems SLM248G4PS Packet a unit of data sent over a network, Mail protocol on the Internet

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Appendix C

Glossary

MAC (Media Access Control) Address  The unique address that a manufacturer assigns to each networking device.

Mask  A filter that includes or excludes certain values, for example parts of an IP address.

Mbps (MegaBits Per Second)  One million bits per second; a unit of measurement for data transmission.

MD5 (Message Digest 5)  An algorithm that produces a 128-bit hash. MD5 is a variation of MD4, and increases MD4 security. MD5 verifies the integrity of the communication and authenticates the origin of the communication.

MDI (Media Dependent Interface)  A cable used for end stations.

MDIX (Media Dependent Interface with Crossover)  A cable used for hubs and switches.

MIB (Management Information Base)  MIBs contain information describing specific aspects of network components.

Multicast  Transmits copies of a single packet to multiple ports.

Network  A series of computers or devices connected for the purpose of data sharing, storage, and/or transmission between users.

NMS (Network Management System)  An interface that provides a method of managing a system.

OID (Object Identifier)  Used by SNMP to identify managed objects. In the SNMP Manager/Agent network management paradigm, each managed object must have an OID to identify it.

Packet  A unit of data sent over a network.

Ping (Packet INternet Groper)  An Internet utility used to determine whether a particular IP address is online.

Policing  Determines if traffic levels are within a specified profile. Policing manages the maximum traffic rate used to send or receive packets on an interface.

Port  The connection point on a computer or networking device used for plugging in cables or adapters.

Port Mirroring  Monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from one port to a monitoring port.

Power over Ethernet (PoE)  A technology enabling an Ethernet network cable to deliver both data and power.

QoS (Quality of Service)  Provides policies that contain sets of filters (rules). QoS allows network managers to decide how and what network traffic is forwarded according to priorities, application types, and source and destination addresses.

RADIUS (Remote Authentication Dial-In User Service)   A protocol that uses an authentication server to control network access.

RJ-45 (Registered Jack-45)  An Ethernet connector that holds up to eight wires.

RMON (Remote Monitoring)  Provides network information to be collected from a single workstation.

Router  A networking device that connects multiple networks together.

RSTP (Rapid Spanning Tree Protocol)  Detects and uses network topologies that allow a faster convergence of the spanning tree, without creating forwarding loops.

Server  Any computer whose function in a network is to provide user access to files, printing, communications, and other services.

SMTP (Simple Mail Transfer Protocol)  The standard e-

mail protocol on the Internet.

SNMP (Simple Network Management Protocol)  A

widely used network monitoring and control protocol.

Static IP Address  A fixed address assigned to a computer or device that is connected to a network.

STP (Spanning Tree Protocol)  Prevents loops in network traffic. The Spanning Tree Protocol (STP) provides tree topography for any arrangement of bridges. STP provides one path between end stations on a network, eliminating loops.

Subnet (Sub-network) Subnets are portions of a network that share a common address component. In TCP/IP networks, devices that share a prefix are part of the same subnet. For example, all devices with a prefix of 157.100.100.100 are part of the same subnet.

Subnet Mask  An address code that determines the size of the network.

Switch  Filters and forwards packets between LAN segments. Switches support any packet protocol type.

TACACS+ (Terminal Access Controller Access Control System Plus)  Proprietary Cisco enhancement to Terminal AccessControllerAccessControlSystem(TACACS).Provides additional support for authentication, authorization, and accounting.

TCP(TransmissionControlProtocol)  Anetworkprotocol for transmitting data that requires acknowledgement from the recipient of data sent.

TCP/IP (Transmission Control Protocol/Internet Protocol)  A set of instructions PCs use to communicate over a network.

Telnet  A user command and TCP/IP protocol used for accessing remote PCs.

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Contents Port or 48-Port 10/100 + Online Resources About This GuideAbout This Guide Icon DescriptionsTable of Contents Snmp Global Parameters Snmp Views Snmp Group Profile SnmpGigabit Ethernet Fiber Optic Cabling Appendix B About Switch StackingAppendix G Contact Information Appendix C Glossary Appendix D SpecificationsIntroduction ChapterFront Panel Switch LEDs and ports are located on the front panelChapter Product Overview Product OverviewSwitch’s LEDs and ports are located on the front panel Power The Power port is where you connect the AC powerBack Panel Product Overview Placement Options Chapter InstallationInstallation Pre-Installation ConsiderationsDesktop Placement Hardware InstallationRack-Mount Placement Configuring Stack Mode Uplinking the SwitchTo set up a stack with six switches, follow these steps Connect port G1 on Unit 2 to port G2 on Unit Power off the new unit 5 the former master unitConnect port G1 on Unit 3 to port G2 on Unit Using telnet Chapter Configuration Using Console InterfaceLogin screen appears. Proceed to the Login section below System Configuration Menu How to Use the Console InterfaceLogin Switch Main MenuSystem Information Management SettingsSecurity Settings User & Password SettingsIP Configuration Http File Management Restore System Default SettingsReboot System Stack ConfigurationPort Status Menu Port ConfigurationLogout System ModePoE Settings HelpDevice Information Chapter Configuration Using Web-based UtilitySetup Setup SummaryClicking on a port displays the Port Configuration screen Setup ZoomSetup Network Settings Orange The administrator has closed down this portDaylight Saving Setup TimeSet Time Local TimeSntp Servers Setup Stack ManagementPort Management Port Settings Port ManagementPort Management Port Settings Port Configuration Port Management Link Aggregation LAG ConfigurationPort Management Lacp Port Management PoE Power SettingsVlan Table Vlan Management Port SettingVlan Management Vlan Management Create VlanVlan Management Vlan to Port Vlan Management Port to VlanJoin Vlan to Port Statistics Rmon Statistics StatisticsStatistics Rmon History Log Table Rmon HistoryRmon History Table Add Alarm Statistics Rmon AlarmsAlarm Table Statistics Port Utilization Statistics Rmon EventsStatistics Interface Statistics Parameters Security 802.1x SettingsSecurity Ethernet-likeSecurity Port Security Setting TimerSecurity Storm Control Security Management Access ListSecurity Radius QoSBroadcast Only Counts only Broadcast traffic CoS Default QoS CoS SettingsQoS Queue Settings CoS SettingsQoS Basic Mode QoS Dscp SettingsQoS Bandwidth Spanning Tree Global STP Global SettingSpanning Tree Spanning Tree STP StatusBridge Settings Spanning Tree STP Port SettingsSpeed Displays the speed at which the port is operating Multicast Bridge Multicast Vlan Igmp SettingsMulticast Multicast Igmp SnoopingSnmp Global Parameters Multicast Bridge Multicast Forward AllSnmp Group Profile Snmp ViewsSnmp Communities Snmp Group MembershipUser Name Provides a user-defined local user list Advanced Table Snmp Notification FilterSnmp Notification Recipient Base TableLocal User Edit AdminAdmin User Authentication User AuthenticationAdmin Dynamic Address Admin Static AddressSecure The entry is defined for locked ports Clear Table If selected, this clears the MAC Address table Admin Port MirroringAdmin Cable Test QueryAdmin Save Configuration Admin Reboot Admin Firmware UpgradeAdmin Factory Default Admin Server Logs Admin LoggingAdmin Memory Logs Logout Admin Flash LogsFiber Optic Cabling Appendix aAppendix a About Gigabit Ethernet Fiber Optic Cabling Gigabit EthernetStack Building Quick Start Appendix B About Switch StackingAbout Switch Stacking Appendix BUnit ID Allocation Advanced StackingStack Resiliency Unit IDsMaster Discovery Stack Units Startup ProcessMaster Election Replacing a Failed Stack Member in a Running Stack Unit and Port ConfigurationUser Controls Stacking ExamplesStack Master Failure and Replacement Splitting a Stack Subgroup Contains Both Master Unit and Backup Master UnitBoth Stacks Kept Running During Insertion Merging Two StacksInserting Too Many Units Stacking Cable FailureAppendix C Glossary Appendix CGlossary Glossary Mail protocol on the Internet Packet a unit of data sent over a networkAppendix C Specifications Appendix D SpecificationsAppendix D Management Vlan Class of Service Port-based 802.1p Vlan priority-basedPower in compliance with Ieee DimensionsExclusions and Limitations Warranty InformationObtaining Warranty Service Appendix ETechnical Support Warranty InformationRegulatory Information Appendix FRegulatory Information Appendix F Norsk Norwegian Miljøinformasjon for kunder i EU Appendix F Contact Information Appendix G
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