Hitachi US7070447-001 manual LAN Emulation Client LEC

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Draft Level—Hitachi Confidential

Basic ATM Concepts

The components of an Emulated LAN (ELAN) consists of the following:

❒LAN Emulation Client (LEC)

❒LAN Emulation Configuration Server (LECS)

❒LAN Emulation Server (LES)

❒Broadcast and Unknown Server (BUS)

LAN Emulation Client (LEC)

The LAN Emulation Client (LEC) resides on the HiSpeed switch and acts as a proxy for devices connected to the Ethernet ports. In addition, the LEC responds to any LAN Emulation Address Resolution Protocol (LE_ARP) requests from host machines on the network.

LAN Emulation Configuration Server

The LAN Emulation Configuration Server (LECS) provides the LEC with the ATM address of the LAN Emulation Server (LES) to join an ELAN. It also provides the LEC with configuration information. The LEC can connect to the LECS in one of three ways:

❒Use ILMI

❒Use the LECS well-known address:

47007900000000000000000000:00A03E000001:00

❒Use a Config Direct VCC of 0.17 (one for each ELAN)

LAN Emulation Server (LES)

The LES registers and resolves MAC addresses to ATM addresses within the ELAN. The LES forwards the LEC response and helps the LEC locate the BUS, by responding to the LE_ARP request from the LEC.

Broadcast and Unknown Server (BUS)

The BUS forwards all broadcasts, multicast and unknown unicast traffic to all attached LAN Emulation Clients (LECs).

US7070447-001, Rev 01

11-3

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Contents Troubleshooting Guide #&$$% Table of Contents Chapter Cabling Chapter Methods of Managing the SwitchChapter Fundamentals of Networking Chapter Bridging Concepts Chapter Troubleshooting at the MAC LayerChapter Vlan Concepts Chapter Basic ATM Concepts Chapter Troubleshooting at the Network LayerIndex Chapter Fddi ConceptsViii HS150-100-16 base model with an HS150-100-8E expansion List of FiguresViii List of Tables US7070447-001 Chapter Introduction Purpose of the Guide Basic Troubleshooting TipsHow to Contact Tech Support HIassist@hitachi.com HiSpeed Switch Troubleshooting Guide Basic Product Features Supported Chapter HiSpeed Switch What is the HiSpeed Switch?Available Configurations Total Model Mbps Uplink Upgrades To Ports TX Ports FX Ports Base model configurationsHS140/150-100 Model HS140/150-010 ModelExpansion Modules HiSpeed switch expansion modulesModule Number Mbps Mbps Base Model TX Ports FX PortsUplink modules for the HS15-010 and HS150-100 UpLink ModulesModel Ports Type Base Model Observing LEDs Chapter Hardware DiagnosticsLEDs Reset ButtonModule LEDs LED statusHardware Diagnostics LEDs on FX ports RJ-45 LEDsColor Status Description Color State DescriptionFactory Switch Settings HiSpeed Memory, Boot Prom, Flash ComponentsHiSpeed Switch Troubleshooting Guide Basic Connections Chapter CablingPin MDI-X Signal RJ-45 Connector pin assignments10BASE-TX Ports 100BASE-FX Ports 10/100BASE-TX PortsConsole Port Pins Signal NameConsole Port Pin Assignments Cabling HiSpeed Switch Troubleshooting Guide Chapter Fundamentals of Networking Network Media Examples of Physical Layer devices are repeaters and hubsExamples of Layer 2 devices are bridges and switches HiSpeed Switch Troubleshooting GUide CLI Command Line Interface Chapter Methods of Managing the SwitchUsing the Console Port Troubleshooting a Console Connection Using a Telnet SessionLogging Troubleshooting a Telnet SessionWindows 95/Windows NT HiView Switch ManagementHiView Tips UnixSnmpc Issues Troubleshooting HiViewExample MIB Compiler Reload NowagainFig2. MIB Browser SNMPTalk Issues How Spanning Tree Works Chapter Bridging Concepts Basic Bridging ConceptsUsing Spanning Tree Troubleshooting Bridging Issues To reduce the STA timer, type Vlan CLI CommandsHiSpeed Switch Troubleshooting Guide Chapter Vlan Concepts VLANs Default VLANs Multiple VLANsProblem Cannot ping a users on a different Vlan Troubleshooting VLANsDescription CLI command Vlan entry created Useful CLI CommandsVlan Tips Vlan EntriesChapter Troubleshooting at the MAC Layer Ethernet Common Ethernet Errors Physical Media SpecificationsFCS errors Alignment errorsEthernet Tips Oversized framesTo clear the buffer queues Troubleshooting EthernetDisplays all port speeds, duplexity HiSpeed Switch Troubleshooting GUide Class Range Subnet Mask IP address classesRIP Routing Information Protocol Other IP-related ServicesRoute Cache Forwarding vs. IP Forwarding Default RouteStatic Routes vs. Dynamic Routes Network Unreachable Common Icmp Destination Unreachable MessagesTroubleshooting IP Problem Cannot establish a telnet session to the switch CLI CommandsVPI/VCI Chapter Basic ATM ConceptsLAN Emulation Lane Permanent Virtual Circuits vs Switched Virtual CircuitsLAN Emulation Client LEC Point-to-Point Bridging Ptop Classical IP over ATM CIPATM Ptop TrunkingATM Troubleshooting Tips Hitachi HiSpeed ATM SpecificationsTroubleshooting Lane Verify the following using /ATM/SHOW/connection Troubleshooting CIP11-9 Troubleshooting Ptop Verify signaling and Ilmi status should be ‘up’ Troubleshooting Trunking Verify all ATM Trunk ports are in a ‘Forwarding’ state using Displays all active ATM circuits Dual Ring Chapter Fddi ConceptsHiSpeed Fddi Uplink Fddi Uplink Module installed in an HS150SAS cable connections Cable ConnectionsLED States Fddi Bridge ModesLED Status Board Status Description Yellow Green Filtering Mode Fddi Troubleshooting TipsForwarding Mode Promiscuous ModeVerify that physical port 34 is active using vvp Troubleshooting FddiProblem Cannot ping another Vlan over Fddi 12-8 Displays the Fddi MAC Neighbor address table 12-10 Index 71$E54 C1=5.2 ?U?B*,8