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4-2
Troubleshooting
Basic Troubleshooting Tips
Troubleshooting
■ Improper Network Topologies. It is important to make sure you have
a valid network topology. Common topology faults include excessive
cable length and excessive repeater delays between end nodes. If you have
network problems after recent changes to the network, change back to
the previous topology. If you no longer experience the problems, the new
topology is probably at fault.
In addition, you should make sure that your network topology contains
no data path loops. Between any two end nodes, there should be only
one active cabling path at any time. Data path loops will cause broadcast
storms that will severely impact your network performance.
With your Series 5300xl Switches, if you wish to build redundant paths
between important nodes in your network to provide some fault toler-
ance, you should enable Spanning Tree Protocol support on the switch.
This ensures that only one of the redundant paths is active at any time,
thus avoiding data path loops. Spanning Tree can be enabled through the
switch console, the web browser interface, or ProCurve Manager.
The Series 5300xl Switches also support Trunking, which allows multiple
network cables to be used for a single network connection without
causing a data path loop. See the Management and Configuration Guide
that is on the documentation CD-ROM that came with your switch for
more information on Spanning Tree and on Trunking.
■ Connecting to devices that have a fixed full-duplex configuration.
The RJ-45 ports on the Series 5300xl Switches are all configured as “Auto”.
That is, when connecting to attached devices, the switch will operate in
one of two ways to determine the link speed and the communication mode
(half duplex or full duplex):
• if the connected device is also configured to Auto, the switch will
automatically negotiate both link speed and communication mode
• if the connected device has a fixed configuration, for example 100
Mbps, at half or full duplex, the switch will automatically sense the
link speed, but will default to a communication of half duplex
Because the Series 5300xl Switches behave in this way (in compliance
with the IEEE 802.3 standard), if a device connected to the switch has
a fixed configuration at full duplex, the device will not connect correctly
to the switch. The result will be high error rates and very inefficient
communications between the switch and the device.
Ensure that all devices connected to the Series 5300xl Switches are
configured to auto negotiate, or are configured to connect at half duplex
(all hubs are configured this way, for example).
- HP ProCurve Series 3
- 5300xl Switches 3
- Contents 5
- 4 Troubleshooting 6
- A Specifications 7
- ■ Features 9
- ■ Switch operation overview 9
- Use xl modules only 10
- Introducing the HP ProCurve 12
- Series 5300xl Switches 12
- Console Port 16
- Reset Button 16
- Clear Button 16
- Back of the Switch 17
- Power Connector 17
- Switch Features 18
- Included Parts 21
- Japan Power 22
- Cord Warning 22
- Installation Procedures 23
- Installation Precautions 24
- Cautions 25
- Cabling Infrastructure 26
- Installation Location 27
- 2.Install Switch xl Modules 28
- 1. Insert module into the 29
- Caution: 30
- LED Behavior: 33
- 5. Mount the Switch 34
- Horizontal Surface Mounting 37
- Wall Mounting 38
- Terminal Configuration 40
- Direct Console Access 41
- Telnet Console Access 41
- Hot Swapping Switch Modules 42
- Adding or Replacing Modules 42
- Changing the Module Type 42
- Example Network Topologies 43
- Basic Connectivity 43
- Use as an Edge Switch 44
- Using the Switch Setup Screen 48
- Where to Go From Here 50
- Management 51
- Starting a Telnet Session 51
- PoE Status 52
- Controller xl Module (J8162A) 53
- 740wl/760wl Configuration 53
- Module Configuration 53
- 5300xl Switch Configuration 55
- Troubleshooting 57
- Basic Troubleshooting Tips 58
- Diagnosing with the LEDs 60
- Diagnostic Tips: 61
- Proactive Networking 65
- Hardware Diagnostic Tests 66
- Testing Twisted-Pair Cabling 67
- Configuration 68
- Downloading New Code 69
- HP Customer Support Services 69
- Before Calling Support 69
- Specifications 71
- Acoustic 72
- Network Connectors 72
- Switch Ports 73
- Fiber-Optic Cables 75
- Cable Diagram 77
- Pin Assignments 77
- 1000 Mbps Network Connections 79
- Safety Information 81
- Safety and EMC Regulatory 82
- Statements 82
- Hinweise zur Sicherheit 83
- Safety Information (Japan) 86
- Safety Information (China) 87
- EMC Regulatory Statements 88
- Australia/New Zealand 88
- European Community 90
- Numerics 91
- 2 – Index 92
- Index – 3 93
- 4 – Index 94
- Index – 5 95
- 6 – Index 96
- *5991-2129* 100
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