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Stack Overview Managing OmniSwitch 6600 Series Stacks
page 3-4 OmniSwitch 6600 Series Hardware Users Guide April 2004
Stacking Resiliency and Redundancy
The figure on page 3-3 shows a sample way to connect switches in a four-switch stack to ensure dual-
redundant connections. Except for the bottommost switch in the stack, Port 52 is connected to Port 51 on
the switch below it with a 30 centimeter stacking cable. On the bottommost switch Port 52 is connected to
Port 51 on the topmost switch in the stack with a 1 meter redundant stacking cable. If a stacking connec-
tion goes down data can still flow between all the switches in the stack. In addition, if a switch goes down
traffic can still flow between the switches that are still operating.
Note. See “Redundant Stack Connection” on page 3-13 for more information.
Slot Numbers within a Stack
By default, the slot number for OmniSwitch 6600 series switches is 8. In a stand-alone configuration you
would enter 8 when a Command Line Interface (CLI) command requires a slot number. For example, to
create VLAN 10 on port 1 on an OmniSwitch 6600 series with the default slot number you would enter
vlan 10 port default 8/1
In a stack, each switch must have a unique slot number, which is configured by the user. (See “Managing
Switches in a Stack” on page 3-16 for more information.) This slot number can be any whole number
between 1 and 8.
For example, if you have assigned slot number 2 to a switch you would enter
vlan 10 port default 2/1
The slot number for each switch is stored in the root /flash directory in the boot.slot.cfg file. This file must
exist on every switch in a stack or the stack will not be able to operate correctly. If you accidently delete
this file the switch will revert to the default slot number of 8 and will operate in standby mode. To restore
the slot number and rejoin the switch to the stack you must physically change the slot by following the
steps described in Chapter 2, “OmniSwitch 6600 Series Chassis and Hardware Components,” and reboot
the switch.
Note. In a stack consisting of three or more switches a switch that had a primary or secondary CMM role
will rejoin the stack in an idle mode.
- OmniSwitch 6624/6648 1
- Hardware Users Guide 1
- Contents 3
- About This Guide 7
- Who Should Read this Manual? 8
- What is in this Manual? 8
- What is Not in this Manual? 8
- Documentation Roadmap 9
- Related Documentation 11
- User Manual CD 12
- Technical Support 12
- OmniSwitch 6624 13
- OmniSwitch 6648 13
- OmniSwitch 6600-U24 13
- Stand-Alone 14
- Stacked Configurations 14
- Smart Continuous Switching 15
- Software Rollback 16
- Hot Swapping 16
- Hardware Monitoring 16
- Port and Fabric Capacities 17
- Application Examples 18
- Medium Campus with 1500 Users 19
- 2 OmniSwitch 6600 Series 21
- Chassis and Hardware 21
- Components 21
- EXPANSIO 22
- Status LEDs 31
- Rear Panel 32
- Airflow Considerations 33
- Installation Options 34
- OmniSwitch 662 35
- Power Cords 37
- Grounding the Chassis 37
- Power Supply Redundancy 38
- LAN PWR PORT 39
- CAUTION: 41
- ATTENTION: 41
- Blank Cover Panel Requirement 43
- A Slot Number is Specified 44
- No Slot Number is Specified 44
- OS6600-GNI-U2 45
- OS6600-GNI-C2 47
- Stacking Module 48
- EXPANSION/STACKING 50
- MiniGBIC Specifications 54
- Installing MiniGBICs 55
- Removing MiniGBICs 56
- 100 Mbps SFPs (OS6600-U24) 57
- Installing SFPs (OS6600-U24) 60
- Removing SFPs (OS6600-U24) 61
- Temperature Management 62
- Temperature Errors 64
- Warning Threshold 64
- Danger Threshold 64
- Viewing Fan Status 65
- Chassis Airflow 67
- Blank Cover Panels 68
- Console Port 71
- Hardware Information 73
- Basic Chassis Information 78
- MAC Range Guidelines 79
- 6600 Series Stacks 81
- Stack Overview 83
- Slot Numbers within a Stack 84
- CMM Roles in a Stack 85
- CMM Role Redundancy 85
- CLI Commands Supported 86
- Memory Monitoring Commands 87
- Assigning Slot Numbers 88
- 4 Power off the switch 89
- Slot Numbering Example 90
- EXPANSION/ST 92
- Redundant Stack Connection 93
- Booting the Stack 94
- Idle Status 95
- Managing Switches in a Stack 96
- Restoring Switch Redundancy 97
- -> reload all 99
- Monitoring Stack Topology 100
- A Regulatory Compliance 103
- Standards Compliance 104
- FCC Class A, Part 15 105
- Canada Class A Statement 105
- CISPR22 Class A warning 105
- Blank Panels Warning 107
- Electrical Storm Warning 107
- Chassis Lifting Warning 107
- Installation Warning 108
- Lithium Battery Warning 109
- Operating Voltage Warning 109
- Power Disconnection Warning 110
- Wrist Strap Warning 112
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