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3-8
Installing the Switch
3
5. Select the Master unit in the stack by pressing the Master button in on only one
switch unit. Only one switch in the stack can operate as the Master, all other
units operate in slave mode. If more than one switch in the stack is selected as
Master, or if no switches are selected, the system will select the unit with the
lowest MAC address as the Master.
Stacking Topologies
All units in the stack must be connected via stacking cable. You can connect units in
a simple cascade configuration, connecting Up ports to Down ports, from the top unit
to the bottom unit. Using this “line” topology, if any link or unit in the stack fails, the
stack splits and two separate segments are formed. The Stack Link LEDs on the
units that are disconnected flash to indicate that the stack link between them is not
functioning (see Table 1-2 “System Status LEDs” on page 1-4).
When a stack link failure occurs, the stack reboots and a Master unit is selected
within each of the two stack segments. The Master unit will be either the unit with the
Master button depressed or the unit with the lowest MAC address if the Master
button is not depressed on any unit. When the stack reboots and resumes
operations, note that the IP address will be the same for both of the stack segments.
To resolve the conflicting IP addresses, you should manually replace the failed link
or unit as soon as possible. If you are using a wrap-around stack topology, a single
point of failure in the stack will not cause the stack to fail. It would take two or more
points of failure to break the stack apart.
If the Master unit fails or is powered off, the Backup unit will take control of the stack
without any loss of configuration settings. The Slave unit with the lowest MAC
address is selected as the Backup unit.
Connecting to a Power Source
To connect a device to a power source:
1. Insert the power cable plug directly into the receptacle located at the back of
the device.
Figure 3-8 Power Receptacle
2. Plug the other end of the cable into a grounded, 3-pin socket.
Note: For International use, you may need to change the AC line cord. You must
use a line cord set that has been approved for the receptacle type in your
country.
100 -240V~
50-60Hz 2A
- Gigabit Ethernet Switch 1
- Installation Guide 1
- E122004-R01 4
- 150200045700A 4
- FCC - Class A 5
- Industry Canada - Class A 5
- Japan VCCI Class A 5
- ACN 066 352 010 6
- Safety Compliance 7
- Environmental Statement 10
- Related Publications 11
- Contents 13
- Chapter 1: Introduction 21
- Switch Architecture 22
- Network Management Options 22
- SFP Slots 23
- Stacking Ports 23
- 10/100/1000BASE-T Ports 23
- Port and System Status LEDs 24
- Description of Hardware 25
- Optional Redundant Power Unit 26
- Power Supply Receptacles 26
- Extender Module LEDs 27
- Connectivity 27
- Expandability 28
- Performance 28
- Management 28
- Chapter 2: Network Planning 29
- Collapsed Backbone 30
- Network Aggregation Plan 31
- 1000BASE-LX SMF 32
- (5 kilometers) 32
- Making VLAN Connections 33
- Using Layer 3 Routing 34
- Application Notes 35
- Network Planning 36
- Selecting a Site 37
- Ethernet Cabling 37
- Package Contents 38
- Rack Mounting 39
- Desktop or Shelf Mounting 40
- Installing the Switch 42
- Stacking Topologies 44
- Wiring Map for Serial Cable 45
- Cabling Guidelines 47
- Network Wiring Connections 48
- Fiber Optic SFP Devices 49
- Making Network Connections 50
- 1000BASE-T Cable Requirements 51
- 100-ohm UTP 53
- 100 m (328 ft) RJ-45 53
- Appendix A: Troubleshooting 55
- Power and Cooling Problems 56
- Installation 56
- In-Band Access 56
- Stack Troubleshooting 57
- Troubleshooting 58
- Appendix B: Cables 59
- Straight-Through Wiring 60
- Crossover Wiring 60
- 1000BASE-T Pin Assignments 61
- Fiber Standards 62
- Appendix C: Specifications 63
- Switch Features 64
- Management Features 65
- Standards 65
- Compliances 65
- Extender Modules 66
- Glossary 67
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