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HP 100Base-T Hubs Installation and Reference Guide
3-6 Setting Up Network Connections
Isolating Specific Hub Connections
You can connect or isolate the hubs in a stack. In a stacked
system, some hubs may be connected to the stack collision
domain while others are isolated. In this example, hubs 1, 2, 3
and 4 are in the stack while hub 5 is isolated from the stack. To
isolate hubs from the stack use the Hub Configuration screen in
the VT-100 console interface (see the
Hub Configuration screen
in the VT-100 console interface in Chapter 4). Note that the
collision domain of the isolated hub (hub 5) is separated from
the collision domain of the hubs in the stack (hubs 1, 2, 3 and
4). This technique is very useful in instances when one hub is
receiving unusually high traffic and may be slowing the traffic
on all of the hubs in the stack. Hub 5 is providing improved
performance because traffic associated with it is removed from
the stack. With careful planning, you can restrict access for
specific user groups to required connections only.
Figure 3.2 Linking Part of the Stack to the Stack Collision Domain
with Straight-through, Category 5 Twisted-pair Cable
Note: A hub isolated from the stack collision domain can still be
managed via the management channel, even though the hub is not
receiving or transmitting network traffic through the Stacking Cable.
- Package Contents 3
- Quick Installation 5
- iv Quick Installation 6
- Quick Installation v 7
- vi Quick Installation 8
- Quick Installation vii 9
- About this Guide 11
- Contents 12
- List of Figures 17
- List of Tables 18
- Chapter 1: Product Overview 21
- 1-2 Product Overview 22
- W Cat 5 UTP or STP) 22
- Hub-12TX 23
- Hub-12TXM 23
- Hub-24TX 24
- Switch Port Modules 24
- Network Management Software 24
- Product Overview 1-5 25
- Basic Hub Functions 27
- Outstanding Performance 27
- Extensive Management 27
- Capabilities 27
- Easy Installation 28
- Complete Standards 28
- Conformance 28
- Networking Flexibility 29
- (via Switch Port Modules) 29
- Switching Technology 30
- Switching Methods 31
- 1-12 Product Overview 32
- Installing the System 2-1 33
- Hardware Installation 34
- Mounting Hubs in a Rack 35
- Connecting the Hub System 36
- Installing the System 2-5 37
- 2-6 Installing the System 38
- Category 5 shielded or 38
- Installing the System 2-7 39
- 2-8 Installing the System 40
- Installing the System 2-9 41
- 2-10 Installing the System 42
- Installing the System 2-11 43
- 0RGXOHVLQ 43
- Powering on the Hub 44
- Hot Swap 45
- Verifying Port Status 46
- Installing the System 2-15 47
- Isolation Architecture 48
- Hub ID Setting 49
- Using Management Agents 50
- Backup Links Function 51
- Security Features 51
- Hub Configuration screen 53
- Isolating Multiple Hubs 54
- Twisted-pair Cable 55
- Connecting Remote Stacks 58
- Configuring the System 4-1 60
- Direct Connection 61
- Network Connection 61
- Remote Connection 62
- 4-4 Configuring the System 63
- Configuring the Remote Site 63
- Configuring Your System 64
- 4-6 Configuring the System 65
- Configuring the System 4-7 66
- 4-8 Configuring the System 67
- Configuring the System 4-9 68
- Configuring the System 4-11 70
- 4-12 Configuring the System 71
- Configuring the System 4-13 72
- System Configuration 72
- 4-14 Configuring the System 73
- Configuring the System 4-15 74
- 4-16 Configuring the System 75
- Configuring the SNMP Agent 75
- Configuring the System 4-17 76
- Receivers as shown below: 77
- Configuring the System 4-19 78
- 4-20 Configuring the System 79
- Configuring Hub Parameters 79
- 4-22 Configuring the System 81
- Configuring the System 4-23 82
- Configuring Port Parameters 82
- 4-24 Configuring the System 83
- Configuring the System 4-25 84
- 4-26 Configuring the System 85
- Port Intrusion Control 85
- Configuring the System 4-27 86
- Defining Backup Ports 86
- 4-28 Configuring the System 87
- Table 4.16 Backup Links Menu 87
- Configuring the System 4-29 88
- System Statistics 88
- Figure 4.21 Statistics Menu 88
- Table 4.17 Statistics Menu 88
- Refresh Statistics 89
- Configuring the System 4-33 92
- Port Statistics 92
- )LHOG 'HVFULSWLRQ 95
- Configuring the System 4-37 96
- 4-38 Configuring the System 97
- Xmodem Download 97
- Configuring the System 4-39 98
- Console Security 98
- 4-40 Configuring the System 99
- Configuring the System 4-41 100
- Connectivity Test 100
- 4-42 Configuring the System 101
- Table 4.26 IP Ping Test Menu 101
- Configuring the System 4-43 102
- 4-44 Configuring the System 103
- Figure 4.35 Link Test Menu 103
- Table 4.28 Link Test Menu 103
- Rebooting the Hub 104
- Configuring the System 4-45 104
- Chapter 5: Hardware Reference 105
- Indicator Panel 106
- Exp Slot 107
- Managed 108
- Management Mode Indicators 108
- Hub ID 109
- Console 109
- Isolated 109
- Utilization % 110
- Collision % 110
- Port Status Indicators 111
- Troubleshooting 112
- Hardware Reference 5-9 113
- Diagnostic Test Indicators 114
- Network Connections 115
- Console Port 116
- Rear Panel Components 117
- Stacking Ports 118
- Appendix A: Troubleshooting 119
- System Diagnostics 120
- MDI port), make sure a 121
- Physical Configuration 122
- System Integrity 122
- Appendix B: Pin Assignments 123
- B-2 Pin Assignments 124
- Figure B.2 124
- Pin Assignments B-5 127
- Modem Configuration C-1 128
- C-2 Modem Configuration 129
- Product Specifications 132
- D-2 Product Specifications 133
- Statements 134
- Power Precautions 135
- Safety Information 136
- Hinweise zur Sicherheit 138
- Regulatory Statements 143
- European Community 144
- Canada 144
- Australia 144
- Declaration of Conformity 145
- World Wide Web 146
- Location Phone Number 147
- Glossary 148
- 12MDI-X/24MDI-X.) 151
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