Switch Cisco 24 Puertos 2900

Summary of Features

The Catalyst 2900 provides the following features:

• Encoded address recognition logic (EARL)
  
  
• Virtual local area networks (VLANs)
  
  
• VLAN trunks and Interswitch Links (ISL)
  
  
• Dynamic ISL
  
  
• Load Sharing
  
  
• Vlan Trunk Protocol (VTP)
  
  
• Embedded traffic management tools:
  
  
  • Remote monitoring (RMON)
    
    
  • Switched port analyzer (SPAN) network monitoring
    
    
  • Enhanced SPAN (E-SPAN) VLAN monitoring
    
    
• 10/100 autosensing and auto negotiation

Physical Description

Figure 1-4 illustrates the front panel. You can mount the Catalyst 2900 in:

• Standard 19-inch, 2- or 4-post equipment rack
  
  
• Enclosed cabinet
  
  
• Two- or four-post Telco rack, with either the front panel or back panel facing out
  
  

Mounting the Catalyst 2900 with the back facing out provides easy access to all system components, cables, network connections, and LEDs.

A rack-mount kit is included for mounting the chassis in an EIA-310-C standard 19-inch equipment rack. For rack-mounting installation instructions, refer to the section "Rack-Mounting the Switch" in the chapter "Rack-Mounting Instructions."

Warning Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings."

The LEDs on the supervisor engine module indicate normal system operation, switch load, and the power supply status. The status LED indicates that the system is in normal operating state. The fan LED indicates the fan operating status. The power LED indicates that the power supply operating status. For descriptions of thresholds and status levels, refer to the section "Environmental Monitoring and Reporting Functions" later in this chapter. A detailed description of each LED is provided in the chapter "Confirming the Installation."

System Hardware Components

The following list contains the hardware components of the Catalyst 2900:

• Chassis Components: system backplane, power supply, and fan assembly
  
  
• Supervisor engine module
  
  
• 12-port 10/100TX Fast Ethernet switching module
  
  
• 12-port 100BaseFX Fast Ethernet switching module
  
  

Supervisor Engine Module

The supervisor engine module, shown in the top slot in Figure 1-5, is the switch's main system processor. It contains the Layer 2 switching engine, the network management processor for the system software, and most of the system memory components. It maintains and executes the management functions that control the system.

The supervisor engine module has the following features.

• 1.2-gigabits per second (Gbps) switching bus capable of over one million packets per second (pps)
  
  
• Bridge address table for up to 16,000 active MAC addresses and associated VLANs
  
  
• 25-MHz Motorola MC68EC040 Network Management Processor
  
  
• MAC-layer switching engine that provides data path and control for all network interfaces and support for two integrated 100-Mbps (100BaseTX category 5 UTP) Ethernet interfaces that can support redundancy in spanning-tree algorithm or load sharing when used with VLANs
  
  
• Two 100-Mbps supervisor engine module ports that use RJ-45 and media-independent interface (MII) connectors
  
  
• Hardware support for up to 1,000 VLANs
  
  
• Memory components used by the system, including the 8 MB of DRAM components for software execution and 4 MB of Flash memory for code storage and downloading the system software
  
  
• Air-temperature sensors for environmental monitoring