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This chapter provides an overview of the features and components of the Catalyst 4000 family switches. It consists of the following sections:
The following sections describe the features of the Catalyst 4000 family switches:
The Catalyst 4003 switch (see Figure 1-1) is a three-slot switch designed for high-performance, high-density wiring closet applications.
The Catalyst 4003 switch has a Gigabit Ethernet port and a 12-Gbps nonblocking, full-duplex switching fabric that provides connections between the supervisor engine and the switching modules. The Gigabit Ethernet port can be configured with any combination of shortwave (SX), longwave/long-haul (LX/LH), and extended range (ZX) Gigabit Interface Converters (GBICs). For a description of GBICs, see the "Installing, Removing, and Maintaining GBICs" section.
The Catalyst 4003 chassis has three slots for online swappable modules. Slot 1 is reserved for the supervisor engine, which provides switching, local and remote management, and switch-status monitoring. Slots 2 and 3 are available for switching modules.
Table 1-1 describes the Catalyst 4003 switch features.
| 1CLI = command-line interface 2RMON = Remote Monitoring 3CDP = Cisco Discovery Protocol 4VTP = VLAN Trunk Protocol 5CGMP = Cisco Group Management Protocol |
The Catalyst 4006 switch (see Figure 1-2) is a six-slot switch designed for high-performance, high-density wiring closet applications.
The Catalyst 4006 switch has two Gigabit Ethernet ports and a 32-Gbps, nonblocking, full-duplex, switching fabric that provides connections between the supervisor engine and the switching modules. The Gigabit Ethernet ports can be configured with any combination of shortwave (SX), longwave/long-haul (LX/LH), and extended range (ZX) GBICs. For a description of GBICs, see the "Installing, Removing, and Maintaining GBICs" section.
The Catalyst 4006 chassis has six slots for online swappable modules. Slot 1 is reserved for the supervisor engine, which provides switching, local and remote management, and switch-status monitoring. Slots 2 through 6 are available for switching modules.
Table 1-2 describes the Catalyst 4006 switch features.
| Feature | Description | ||
|---|---|---|---|
Ethernet speeds |
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Standard equipment |
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Standard management and support |
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Software management |
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Embedded management |
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Supported switching modules (continued) |
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| 1CLI = command-line interface 2RMON = Remote Monitoring 3CDP = Cisco Discovery Protocol 4VTP = VLAN Trunk Protocol 5CGMP = Cisco Group Management Protocol |
The following components are standard on the Catalyst 4003 switch:
The following components are available as options for the Catalyst 4003 switch:
The following components are standard on the Catalyst 4006 switch:
The following components are available as options for the Catalyst 4006 switch:
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Note For complete environmental specifications, including airflow requirements, see "Specifications." |
The system fan assembly provides cooling air for the internal chassis components. The fan assembly is a tray of fans that you can insert and remove from the chassis while the system is on line. The Catalyst 4003 switch fan assembly has two fans, and the Catalyst 4006 switch has four fans. The fans exhaust air from one side and draw in fresh air on the other side. Catalyst 4003 switch airflow is shown in Figure 1-3. Catalyst 4006 switch airflow is shown in Figure 1-4.
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Caution Unused switching module slots must have module filler plates installed to ensure proper airflow. |
If one fan on the tray fails, the other fans continue to run. A sensor on the supervisor engine monitors internal air temperature. If the air temperature exceeds a desired threshold, the environmental monitor displays warning messages. For specific threshold and status level descriptions, see the "Power Supplies" section.
To replace a fan assembly, see "Removing and Replacing FRUs."
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Note For complete power specifications, see "Specifications." |
The Catalyst 4003 and 4006 switches use either an AC-input power supply (see Figure 1-5) or a DC-input power supply (see Figure 1-6). The AC-input power supply has a 6-foot (1.83-meter) power cord that connects each power supply to the site power source. The DC-input power supply is equipped with a compression-style input terminal block that is directly connected to the site power wiring.
The power supply does not have a power switch. Power is provided when the power cord and wiring are installed and plugged into an electrical outlet and the unit is fully seated in the system chassis.
Catalyst 4003 and 4006 switches support redundant power supplies. Each power supply has an individual power cord and status LEDs. The Catalyst 4003 switch has one power supply and an optional redundant power supply. The Catalyst 4006 switch has two power supplies and one optional redundant power supply. Two standard power supplies are required to operate a Catalyst 4006 switch. Systems with three power supplies will share the load with each unit providing approximately one third of the total load.
When power is removed from one power supply on a Catalyst 4003 switch with three power supplies, the redundant power feature causes the second power supply to produce full power.
When power is removed from one power supply on a Catalyst 4006 switch with three power supplies, the other two power supplies produce full power. Load sharing returns when all three power supplies are powered on.
To replace a power supply, see the "Removing and Replacing the Power Supply" section.
The AC power supply has two front panel LEDs:
Each power supply has a built-in fan. Air enters the front of the power supply (power-input end) and exits through the back. An air dam keeps the airflow separate from the rest of the chassis, which is cooled by the system fan assembly.
When you install and plug in a second power supply on a Catalyst 4003 switch, it provides approximately half of the required power to the system. If one power supply fails, the second power supply immediately assumes full power to maintain uninterrupted system operation.
When you install and turn on a third power supply on a Catalyst 4006 switch, it provides approximately one third of the power required by the system. If one power supply fails, the other two immediately generate full power to maintain uninterrupted system operation.
When you install a redundant power supply, load sharing and fault tolerance are enabled automatically; no software configuration is required.
The environmental monitoring and reporting functions allow you to maintain normal system operation by resolving adverse environmental conditions before loss of operation.
The power supply monitors its own internal temperature and voltages. In the event of excessive internal temperature, the power supply will shut down to prevent damage. When the power supply returns to a safe operating temperature, it will restart. If the power supply output voltage is abnormal, the OUTPUT FAIL LED will light. Substantial input overvoltage conditions can shut down the power supply.
The supervisor engine monitors the status of each power supply and provides a status report through the switch software. For more details on how the supervisor engine monitors the power supplies, see the "Supervisor Engines" section.
The Catalyst 4006 switch power entry module (PEM) allows you to provide power from an external -48 VDC power supply. The PEM has a maximum load of 30A with minimum losses. If a -48 VDC power supply is installed, the PEM detects its presence. For information on installing the PEM, see the "Installing the Power Entry Module" section.
The Catalyst 4006 external power shelf contains up to three single-phase, AC-DC, 1050 watt, -52V output power supplies, which can provide telephony power to voice power-enabled switching modules.
Posted: Fri Apr 13 19:15:52 PDT 2001
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