Internetworking, Interoperability, Jitter | Cabletron Systems 100

Glossary

internetworking

The linking of one or more networks to facilitate communication across networks.

interoperability

The ability of equipment from multiple vendors to exchange information using standardized protocols.

IP (Internet protocol)

IP is the basic datagram protocol used at the network layer of the TCP/IP stack.

ISO (International Standards Organization)

An organization that creates, controls and publishes standards.

jitter

Clocking deviation on a network.

Kbps (kilobits per second)

1,000 bits per second.

LAN (local area network)

A network that interconnects a variety of devices (computers, printers, servers, and so on), within a limited geographical area. A LAN typically connects devices within a building or campus.

link-loss budget

Each connection (link) in an optical system results in a certain amount of signal strength loss. Link-loss budget refers to the process of calculating link loss for the entire system. If the total link loss exceeds a certain limit, the system will not function.

LLC (logical link control)

A part of the data link layer of the OSI model that deﬁnes the transmission of a frame of data between two stations (with no intermediate switching nodes).

local trafﬁc

Trafﬁc within a given network segment.

B-6

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Cabletron Systems 100 Internetworking, Interoperability, IP Internet protocol, ISO International Standards Organization

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 Traplog EraseExit or Logout 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 Changing a Subnet Mask Displaying IP AddressesDeleting an IP Address 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 Community Names System NameSystem Location Set Community Name Aging Parameter ELS100-16TX Statistics Chapter Monitoring and Managing Your ELS100-16TXELS100-16TX Management Tools 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 Power-up LED Sequence Chapter ELS100-16TX Diagnostics and TroubleshootingPOWER-UP Diagnostics Speciﬁc Power-up Tests Software Checksum Comparison Status and Activity Indicators Power-up Diagnostics ResultsResponses to Failures AT POWER-UP ELS100-16TX Front Panel LEDs ACT ELS100-16TX does not Power UP 3 ELS100-16TX Does Not Respond to NMS Connectivity Problems2 ELS100-16TX Has Rebooted 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