Troubleshooting Guide
HiSpeed Fast Ethernet Switch
Your name, address, telephone, and fax number
A description of any commands entered and the resulting output
#&$$%
Type of equipment, serial number, and software version number
Hardware Diagnostics
Table of Contents
HiSpeed Switch
Chapter Introduction
Chapter
Methods of Managing the Switch
Chapter Cabling
Fundamentals of Networking
Bridging Concepts
Troubleshooting at the MAC Layer
Chapter
Chapter
Chapter Troubleshooting at the Network Layer
Chapter
Basic ATM Concepts
Chapter
FDDI Concepts
Index
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List of Figures
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List of Tables
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Basic Troubleshooting Tips
Chapter Introduction Purpose of the Guide
How to Contact Tech Support
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HiSpeed Switch Troubleshooting Guide
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Chapter HiSpeed Switch What is the HiSpeed Switch?
Basic Product Features Supported
Available Configurations
Base model configurations
HS140/150-010 Model
HS140/150-100 Model
Expansion Modules
HiSpeed switch expansion modules
UpLink Modules
Table 2-3. Uplink modules for the HS15-010 and HS150-100
Chapter Hardware Diagnostics
Observing LEDs
Reset Button
LEDs
Reset Button
LED status
RJ-45 LEDs
LEDs on FX ports
There is no link present on the port
Boot Prom
HiSpeed Memory, Boot Prom, Flash Components
Factory Switch Settings
Memory
HiSpeed Switch Troubleshooting Guide
Ethernet port settings autonegotiation is ON Spanning Tree is enabled
These settings provide for switching in a single broadcast domain
Draft Level-Hitachi Confidential
Chapter Cabling
Basic Connections
10BASE-TX Ports
Table 4-1. RJ-45 Connector pin assignments
10/100BASE-TX Ports
100BASE-FX Ports
Console Port
Cabling
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HiSpeed Switch Troubleshooting Guide
Draft Level-Hitachi Confidential
US7070447-001, Rev
Chapter Fundamentals of Networking
Doc Part Number, Version Number
Examples of Physical Layer devices are repeaters and hubs
Layer 1 Physical Layer
Layer 2 Data Link Layer
Layer 3 Network Layer
Examples of Layer 2 devices are bridges and switches
Examples of Layer 3 devices are routers
Layer 4 Transport Layer
HiSpeed Switch Troubleshooting GUide
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Doc Part Number, Version Number
Using the Console Port
Chapter Methods of Managing the Switch
CLI Command Line Interface
SNMP using HiView’s Graphical User Interface GUI
Using a Telnet Session
Troubleshooting a Console Connection
Troubleshooting a Telnet Session
Troubleshooting the Login Procedure
Logging In
HiView Switch Management
Windows 95/Windows NT
Windows 95/NT
UNIX
HiView Tips
UNIX
SNMPC Issues
Troubleshooting HiView
Troubleshooting Network Management software on the HiSpeed switch
valid
MeterWare Issues
EXAMPLE
“ Reload Now”again
MIB Compiler
Draft Level-Hitachi Confidential
Note Viewing Hitachi’s private MIBs requires further testing
Figure 6-2. Fig2. MIB Browser
Doc Part Number, Version Number
SNMPTalk Issues
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Doc Part Number, Version Number
Chapter Bridging Concepts Basic Bridging Concepts
How Spanning Tree Works
Figure 7-1. Using Spanning Tree
Using Spanning Tree to eliminate ata looping
Troubleshooting Bridging Issues
To disable Spanning Tree on the switch, type
vbridge/config/filter
CLI Commands
vbridge/config/bridge vlan#
vbridge/show/fwt
HiSpeed Switch Troubleshooting Guide
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Chapter VLAN Concepts
VLANs provide some of the following benefits Reduced costs
Troubleshooting VLANs
Problem Cannot ping a users on a different VLAN
VLAN Tips
Useful CLI Commands
VLAN Entries
Chapter Troubleshooting at the MAC Layer Ethernet
Physical Media Specifications
Common Ethernet Errors
Ethernet Tips
Troubleshooting Ethernet
Problem Network is experiencing a large number of packet losses
CLI Commands
HiSpeed Switch Troubleshooting GUide
Draft Level-Hitachi Confidential
Doc Part Number, Version Number
Chapter Troubleshooting at the Network Layer IP Internet Protocol
Other IP-related Services
RIP Routing Information Protocol
Default Route
Route Cache Forwarding vs. IP Forwarding
Static Routes vs. Dynamic Routes
Host Unreachable
Common ICMP Destination Unreachable Messages
Network Unreachable
Port Unreachable
Troubleshooting IP
Problem Performance is slow when routing across different networks
CLI Commands
Problem Cannot establish a telnet session to the switch
Chapter Basic ATM Concepts
Figure 11-1. VPI/VCI
Permanent Virtual Circuits vs Switched Virtual Circuits
LAN Emulation LANE
LAN Emulation Server LES
LAN Emulation Configuration Server
LAN Emulation Client LEC
Broadcast and Unknown Server BUS
Classical IP over ATM CIP
Point-to-Point Bridging PTOP
Figure 11-3. ATM CIP
HiSpeed switch
Trunking
HiSpeed switch
HiSpeed switch
Hitachi HiSpeed ATM Specifications
ATM Troubleshooting Tips
ATM/CONFIG/MODIFY port
Troubleshooting LANE
ATM/CONFIG/CREATE/lec lec id
PORTSERV/CONFIG/create 34 vps
Troubleshooting CIP
Verify the following using /ATM/SHOW/connection
VLAN/SHOW/VLAN
ATM/SHOW cip cip id /VLAN/SHOW/router
ATM/SHOW cip cip id /VLAN/SHOW/vlan
ATM/SHOW cip
Troubleshooting PTOP
ATM/SHOW/ptop ptop id /ATM/CONFIG/ENABLE/ptop ptop id
Page
Troubleshooting Trunking
ATM/SHOW/trunk trunk id /ATM/CONFIG/ENABLE/trunk trunk id
Verify all ATM Trunk ports are in a ‘Forwarding’ state using
Verify the following using /ATM/SHOW/connection
Displays all active ATM circuits
CLI Commands
ATM/SHOW trunk, trunk trunk# /ATM/SHOW/ARP CIP, LEC /ATM/CONFIG
Displays all or a specified PTOP status
Chapter FDDI Concepts
Figure 12-1. HS150 on an FDDI network
HiSpeed FDDI Uplink
Figure 12-2. FDDI Uplink Module installed in an HS150
Cable Connections
FDDI Bridge Modes
The HiSpeed switch can operate in any of the following bridging modes
Observing LEDs
Forwarding Mode
FDDI Troubleshooting Tips
Filtering Mode
Promiscuous Mode
Troubleshooting FDDI
Verify that physical port 34 is active using vvp
Problem I’m having a communication problem with Platelike over FDDI
Problem Cannot ping another VLAN over FDDI
Problem I cannot ping to some stations via FDDI
Problem Traffic through the FDDI port seems to slow and/or hang
CLI Commands
HiSpeed Switch Troubleshooting Guide
Draft Level-Hitachi Confidential
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#/Numbers
Symbols
Index
C /*@
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#./8#2/1
751,A
C1=5.2
N ==!?
?U?B*,8
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