Switch, Symbol, Synchronous transmission | Cabletron Systems 100

Glossary

switch

An intelligent, protocol independent device used to connect similar or dissimilar LANs.

symbol

The smallest signaling element used by the MAC sublayer. Each symbol corresponds to a speciﬁc sequence of code bits to be transmitted by the physical layer.

synchronous transmission

A transmission technique in which an uninterrupted block of data is transmitted, using no redundant information such as stop and start bits to identify the beginning and end of a unit of data.

TCP/IP (transmission control protocol/Internet protocol) Internetworking protocols sometimes referred to as the Internet suite of protocols.

topology

The arrangement of devices and cable paths that make up a network.

translating bridge

A bridge that can pass data between LANs that use different protocols.

translation

Modiﬁcation of data packets from one type of network so they can be used on a different type of network (e.g., Ethernet to FDDI translation).

trap

Alarm; notiﬁcation of an event that has occurred on a network. Some alarms require intervention or action by the network administrator; some are merely informational.

UDP (user datagram protocol)

A TCP/IP protocol for the connectionless transport layer.

B-10

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Cabletron Systems 100 manual Switch, Symbol, Synchronous transmission, Translating bridge, Translation, Trap

Contents

User Guide Page FCC Notice DOC Notice Cabletron Software Program License Declaration of Conformity Contents ELS100-16TX Diagnostics Troubleshooting Monitoring and Managing Your ELS100-16TX Appendix a Technical Specifications Appendix B Glossary Contents Viii Chapter Introduction About this Manual Getting Help Your email address Document Conventions Related Documentation Overview ELS100-16TX Front Panel SmartSTACK 100 ELS100-16TX Architecture Introduction Port Trunking Autonegotiation Store and Forward Switching Discarding Local Trafﬁc Typical Switching Application Spanning Tree Algorithm SmartSTACK 100 ELS100-16TX Bridge Address Table SmartSTACK 100 ELS100-16TX Port Mirroring SmartSTACK 100 ELS100-16TX Sample Applications SmartSTACK 100 ELS100-16TX Trunking Virtual Workgroups SmartSTACK 100 ELS100-16TX Trunking with 100 Mbps Ports Repeater Traffic Workgroup a Workgroup B Local Console Manager Command Syntax Conventions Basic LCM Commands Help ELS100-16TX Local Console Manager Erase Exit or LogoutTraplog Introduction Chapter Unpacking and Installing Your ELS100-16TX ELS100-16TX Front Panel Port LEDs 100BASE-T Epim Ports Reset Switch Status LEDs ACT Installing AN Epim Describes the ELS100-16TX buttons Installing an Epim Installing the ELS100-16TX Rack-Mounting an ELS100-16TX Attaching Rackmount Brackets Checking the POWER-UP Diagnostics Sequence Connecting the Local Console Manager Connecting to the Network Connecting UTP Cables ELS100-16TX Twisted Pair Connection Connecting a Segment to the EPIM-100FX Cable Pinouts RJ45 Crossover Cable Fiber Optic Network Connection EPIM-100FX Port Unpacking and Installing Your ELS100-16TX Chapter Configuring Your ELS100-16TX Spectrum Spel Spma Assigning IP Addresses Type ipaddr PORT-NUMBER IP Address Displaying IP Addresses Deleting an IP AddressChanging a Subnet Mask Enabling Bridging To change the subnet mask, at the LCM prompt Disabling Bridging Displaying Bridging Functions Enabling Trunking Trunk Groups 100BASE-T Crossover Cables Trunk Groups Disabling Trunking Displaying Trunking Status Display could look like the following Enabled, Rip listening Enabling Port Mirroring Disabling Mirroring Displaying Mirroring Status To check the status for ports conﬁgured for mirroring Defining and Deleting Workgroups Deﬁning Virtual Workgroups LCM responds with the following display Assigning a Community Name Configuring BROADCAST/MULTICAST Storm Protection Modifying MIB Variables System Contact System Name System LocationCommunity Names Set Community Name Aging Parameter Chapter Monitoring and Managing Your ELS100-16TX ELS100-16TX Management ToolsELS100-16TX Statistics Gathering Statistics System Statistics Ethernet Port Statistics Using LCM to Check ELS100-16TX Status Displaying Status Enabled, Rip listening Displaying MAC Addresses To display all MAC addresses, at the LCM prompt Displaying Manufacturing Information LCM would display Using LCM to Manage the ELS100-16TX Managing the ELS100-16TX Disabling a Port Enabling a Port NoRIP Option Changing a Community Name Setting the Baud Rate Setting a Reboot Time Chapter ELS100-16TX Diagnostics and Troubleshooting POWER-UP DiagnosticsPower-up LED Sequence Speciﬁc Power-up Tests Software Checksum Comparison Power-up Diagnostics Results Responses to Failures AT POWER-UPStatus and Activity Indicators ELS100-16TX Front Panel LEDs ACT ELS100-16TX does not Power UP Connectivity Problems 2 ELS100-16TX Has Rebooted3 ELS100-16TX Does Not Respond to NMS ELS100-16TX Diagnostics and Troubleshooting Connector Ports PhysicalElectrical Environmental Diagnostic LEDs Standard Support Address Table Size Management SupportRegulatory Compliance Serial Cable PIN Assignments Connectors 100BASE-T PIN Assignments STRAIGHT-THROUGH Wiring Crossover Wiring EPIM-100FX Specifications 5 4 3 Rule Cable Type Worst Case Budget Typical Budget Technical Speciﬁcations Alarm AddressAddress table Agent Backbone BandwidthBpdu bridge protocol data unit Bps bits per second Congestion Data link layerDatagram Data rate or speed Full wire speed EncapsulationEncode Entity Intelligent bridge/switch Icmp Internet control message protocolIeee Initialization Internetworking InteroperabilityIP Internet protocol ISO International Standards Organization MAC media access control MaskMbps megabits per second MIB management information base Power budget Propagation delayOSI Open Systems Interconnection Packet Rarp reverse address resolution protocol ServiceProtocol Protocol suite Switch SymbolSynchronous transmission Translating bridge Upstream WAN wide area network Glossary