Hitachi US7070447-001 manual Physical Media Specifications, Common Ethernet Errors

Page 60

Draft Level—Hitachi Confidential

HiSpeed Switch Troubleshooting GUide

Physical Media Specifications

10BASE-5

10BASE-2

10BASE-TX

10BASE-FX

(Unshielded Twisted

(Thick Coaxial cable)

(Thin Coaxial cable)

(Fiber Optical Link)

Pair-UTP)

 

 

 

Max. stations per segment

Max. segment length

Connector type

Cable type

1024

1024

1024

1024

500 meters

185 meters

100 meters

200 meters

DB15 AUI

BNC

STAR

STAR

RG-11

RG-58

Cat 3 or 5

62.5/125 mm

 

 

 

or 9/125 sm

Common Ethernet Errors

collisions

Occurs when more than one device is transmitting

 

simultaneously. Collisions are considered to be ‘normal’

 

in an Ethernet environment. CSMD/CD is designed to

 

detect and correct for this.

late collisions

A collision detected after 64 bytes have been

 

transmitted. May indicate a malfunctioning NIC/cable, or

 

a network segment that has exceeded the maximum

 

length.

excessive collisions

The maximum number (16) of consecutive collisions

 

allowed between endstations contending for the wire.

 

Possibly caused by exceeding the maximum number of

 

users on a given segment, length of cable, or jabbering

 

NIC.

undersized frames/

Frames smaller than the minimum Ethernet frame size of

runts

64 bytes a.k.a. ‘runts’. Presumed to be a fragment

 

resulting from a collision.

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Doc Part Number, Version Number

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Contents Troubleshooting Guide #&$$% Table of Contents Chapter Methods of Managing the Switch Chapter CablingChapter Fundamentals of Networking Chapter Troubleshooting at the MAC Layer Chapter Bridging ConceptsChapter Vlan Concepts Chapter Troubleshooting at the Network Layer Chapter Basic ATM ConceptsChapter Fddi Concepts IndexViii List of Figures HS150-100-16 base model with an HS150-100-8E expansionViii List of Tables US7070447-001 Basic Troubleshooting Tips Chapter Introduction Purpose of the GuideHow to Contact Tech Support HIassist@hitachi.com HiSpeed Switch Troubleshooting Guide Chapter HiSpeed Switch What is the HiSpeed Switch? Basic Product Features SupportedAvailable Configurations Base model configurations Total Model Mbps Uplink Upgrades To Ports TX Ports FX PortsHS140/150-010 Model HS140/150-100 ModelHiSpeed switch expansion modules Expansion ModulesModule Number Mbps Mbps Base Model TX Ports FX PortsUpLink Modules Uplink modules for the HS15-010 and HS150-100Model Ports Type Base Model Chapter Hardware Diagnostics Observing LEDsReset Button LEDsModule LEDs LED statusHardware Diagnostics RJ-45 LEDs LEDs on FX portsColor Status Description Color State DescriptionHiSpeed Memory, Boot Prom, Flash Components Factory Switch SettingsHiSpeed Switch Troubleshooting Guide Chapter Cabling Basic ConnectionsRJ-45 Connector pin assignments Pin MDI-X Signal10BASE-TX Ports 10/100BASE-TX Ports 100BASE-FX PortsPins Signal Name Console PortConsole Port Pin Assignments Cabling HiSpeed Switch Troubleshooting Guide Chapter Fundamentals of Networking Examples of Physical Layer devices are repeaters and hubs Network MediaExamples of Layer 2 devices are bridges and switches HiSpeed Switch Troubleshooting GUide Chapter Methods of Managing the Switch CLI Command Line InterfaceUsing the Console Port Using a Telnet Session Troubleshooting a Console ConnectionTroubleshooting a Telnet Session LoggingHiView Switch Management Windows 95/Windows NTUnix HiView TipsTroubleshooting HiView Snmpc IssuesExample Reload Nowagain MIB CompilerFig2. MIB Browser SNMPTalk Issues Chapter Bridging Concepts Basic Bridging Concepts How Spanning Tree WorksUsing Spanning Tree Troubleshooting Bridging Issues To reduce the STA timer, type CLI Commands VlanHiSpeed Switch Troubleshooting Guide Chapter Vlan Concepts Default VLANs Multiple VLANs VLANsTroubleshooting VLANs Problem Cannot ping a users on a different VlanUseful CLI Commands Description CLI command Vlan entry createdVlan Tips Vlan EntriesChapter Troubleshooting at the MAC Layer Ethernet Physical Media Specifications Common Ethernet ErrorsAlignment errors FCS errorsEthernet Tips Oversized framesTroubleshooting Ethernet To clear the buffer queuesDisplays all port speeds, duplexity HiSpeed Switch Troubleshooting GUide IP address classes Class Range Subnet MaskOther IP-related Services RIP Routing Information ProtocolDefault Route Route Cache Forwarding vs. IP ForwardingStatic Routes vs. Dynamic Routes Common Icmp Destination Unreachable Messages Network UnreachableTroubleshooting IP CLI Commands Problem Cannot establish a telnet session to the switchChapter Basic ATM Concepts VPI/VCIPermanent Virtual Circuits vs Switched Virtual Circuits LAN Emulation LaneLAN Emulation Client LEC Classical IP over ATM CIP Point-to-Point Bridging PtopTrunking ATM PtopHitachi HiSpeed ATM Specifications ATM Troubleshooting TipsTroubleshooting Lane Troubleshooting CIP Verify the following using /ATM/SHOW/connection11-9 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 Chapter Fddi Concepts Dual RingFddi Uplink Module installed in an HS150 HiSpeed Fddi UplinkCable Connections SAS cable connectionsFddi Bridge Modes LED StatesLED Status Board Status Description Yellow Green Fddi Troubleshooting Tips Filtering ModeForwarding Mode Promiscuous ModeTroubleshooting Fddi Verify that physical port 34 is active using vvpProblem Cannot ping another Vlan over Fddi 12-8 Displays the Fddi MAC Neighbor address table 12-10 71$ IndexE54 C1=5.2 ?U?B*,8

US7070447-001 specifications

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