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This chapter describes how to install your Catalyst 2900 XL switch and interpret the power-on self-test (POST) that ensures proper operation. Read the topics and perform these procedures in the order that they are presented:
These warnings are translated into several languages in "Translated Safety Warnings."
![]() | Warning Only trained and qualified personnel should be allowed to install or replace this equipment. |
![]() | Warning Read the installation instructions before you connect the system to its power source. |
![]() | Warning Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage. |
![]() | Warning To prevent the switch from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of 113ºF (45ºC). To prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around the ventilation openings. |
![]() | Warning
The device is designed to work with TN power systems. |
![]() | Warning When installing the unit, the ground connection must always be made first and disconnected last. |
![]() | Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A international) is used on the phase conductors (all current-carrying conductors). |
![]() | Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. |
![]() | Warning Care must be given to connecting units to the supply circuit so that wiring is not overloaded. |
![]() | Warning A voltage mismatch can cause equipment damage and may pose a fire hazard. If the voltage indicated on the label is different from the power outlet voltage, do not connect the chassis to that receptacle. |
![]() | Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. |
![]() | Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. |
![]() | Warning Ultimate disposal of this product should be handled according to all national laws and regulations. |
![]() | Warning
Attach only the Cisco RPS (model PWR600-AC-RPS) to the RPS receptacle. |
![]() | Warning
Class 1 laser product. |
![]() | Warning Avoid exposure to the laser beam. |
U.S. regulatory information for this product is in the front matter of this manual.

When determining where to place the switch, be sure to observe the guidelines listed below (see "Technical Specifications," for detailed specifications):
A 2900 XL switch can be installed in a 19-inch or 24-inch standard rack, on a wall, or on a table or shelf. This section contains procedures for installing a switch in each of these locations.
Before you begin the installation, decide how to mount the switch by reviewing the illustrations in this section. If you decide to mount the switch in a rack or on a wall, use the mounting brackets supplied with the switch.
To install the switch in a 19-inch or 24-inch standard rack, follow the instructions described in these procedures:
If you plan to install the switch in a rack, you must first remove screws in the switch chassis so that mounting brackets can be attached to the chassis. Figure 2-1 shows how to remove the chassis screws in a fixed-port and a modular port switch.

The bracket orientation and screws that you use depend on whether you are attaching the brackets for a 19-inch or 24-inch rack. Use two of the supplied screws to attach each bracket, according to rack size:
Figure 2-2, Figure 2-3, Figure 2-4, and Figure 2-5, show how to attach a bracket to one side of the switch. Follow the same steps to attach the second bracket to the opposite side of the switch.

After the brackets are attached to the switch, use the four supplied Phillips machine screws to securely attach the brackets to the rack, as shown in Figure 2-6.
After the switch is mounted in the rack, attach the power cord to the switch. If you are using the Cisco Redundant Power Supply (RPS), see the Cisco documentation that came with your RPS for installation instructions.
After the power is connected, the System LED is amber for 2 seconds, and then it flashes green while the switch completes a power-on self-test (POST), described in the "POST Results" section.
We recommend attaching the cable guides to prevent the cables from obscuring the front panel of the switch and the other devices installed in the rack. If the switch is in a 19-inch or 24-inch rack, you can attach the cable guide to the left or right bracket by using the supplied black screw, as shown in Figure 2-7. The cable guides for the modular switches require two screws.

To attach the switch to a wall, follow the procedures in this section:
The bracket orientation and the screws you use depend on whether you are attaching the brackets for parallel or vertical wall-mounting. Use two of the supplied screws to attach each bracket, according to the following guidelines:
Figure 2-8 and Figure 2-9 show how to attach the brackets to one side of the switch. Follow the same steps to attach the second bracket to the opposite side of the switch.

For best support of the switch and cables, make sure the switch is attached securely to a wall stud or to a firmly attached plywood mounting backboard, as shown in Figure 2-10 and Figure 2-11.

After the switch is mounted on the wall, attach the power cord to the switch. If you are using the Cisco RPS, see the Cisco RPS documentation.
After the Cisco RPS is connected, the System LED is amber for 2 seconds, and then it flashes green while the switch completes a power-on self-test (POST), described in the "POST Results" section.
Follow these steps to install the switch on a table or shelf:
Step 2 Place the switch on the table or shelf near an AC power source.
Step 3 Connect the power cord to the switch rear panel and to the power outlet. If you are using the RPS, see the Cisco documentation that came with your RPS for installation instructions.
After the power is connected, the System LED is amber for 2 seconds, and then it flashes green while the switch completes a power-on self-test (POST), described in the "POST Results" section.
When the POST completes successfully, all port status LEDs are off, indicating that the switch is operational. If a test fails, the port status LED associated with the test turns amber, and the system LED turns amber (see "Troubleshooting," for more information).
POST failures are almost always fatal. Call Cisco Systems immediately if your switch does not pass POST.
The procedures in this section explain how to connect devices to the 10/100 ports on the 2900 XL switch. For information on installing and connecting to modules in the expansion slots on the Catalyst 2924M XL and 2912MF XL switches, see the Catalyst 2900 Series XL Modules Installation Guide and the Catalyst 2900 Series XL ATM Modules Installation and Configuration Guide.
The 10/100 ports configure themselves to operate at the speed of attached devices. If the attached ports do not support autonegotiation, you can explicitly set the speed and duplex parameters.
Connecting devices that do not autonegotiate or devices with manually set speed and duplex parameters can reduce performance or result in link failures between the devices. To maximize performance, choose one of these methods for configuring the 10/100 ports:
Follow these steps to connect to 10BaseT or 100BaseTX devices:
Step 1 When connecting to servers and workstations, insert a straight-through
Category 5 cable in a front panel RJ-45 connector, as shown in Figure 2-12.
Step 2 Insert the other end of the cable in an RJ-45 connector of the other device. The port status LED comes on when both the switch and the connected device are turned on.
The port status LED is amber while Spanning-Tree Protocol (STP) discovers the topology and searches for loops (this takes about 30 seconds). Then the port status LED turns green.
If the port status LED does not come on, the device at the other end might not be turned on, or there might be a cable problem or a problem with the adapter installed in the attached device. See "Troubleshooting," for solutions to cabling problems.
Step 3 Reconfigure and reboot the connected device if necessary.
Step 4 Repeat steps 1 through 3 to connect additional devices.
Follow these steps to connect to a fixed 100BaseFX ports:
Step 1 Remove the rubber plugs from the fiber-optic port and store them for future use.
Step 2 Insert the connector into the fiber-optic receptacle, as shown in Figure 2-13.
![]() | Caution Do not remove the rubber plugs from the fiber-optic port or the rubber caps from the fiber-optic cable until you are ready to connect the cable. The plugs and caps protect the fiber-optic port and cable from contamination and ambient light. |

Follow these steps to connect the terminal or PC to the switch:
Step 1 Be sure that your PC or terminal-emulation software is configured to communicate with the switch via hardware flow control.
Step 2 Configure the baud rate and character format of the terminal or PC to match these console port default characteristics:
After you have gained access to the switch, you can change the baud rate of the port. See the Cisco IOS Desktop Switching Software Configuration Guide for instructions.
Step 3 Using the supplied rollover cable, insert the RJ-45 connector in the console port, as shown in Figure 2-14. See the "Console Port" section for a description of the pinout.
Step 4 Attach one of these supplied adapters to a PC or terminal:
Step 5 Insert the other end of the supplied rollover cable in the attached adapter.
Step 6 Boot the terminal-emulation program if you are using a PC or workstation.

You can assign the switch an IP address by two methods:
This section describes each method.
The switch setup program assigns IP information and creates a default configuration that you can use to operate the switch. To run the setup program, access the switch from the terminal or PC that you connected to the console port. (The "Connecting a Terminal or PC to the Console Port" section explains this procedure.) Later, you can customize the configuration by using Cisco Visual Switch Manager (CVSM) or the command-line interface (CLI).
The first time you access the switch, the setup program prompts you for an IP address, a subnet mask, and the IP address of the default gateway. Contact your system administrator for these numbers:
Switch IP address | ___________.___________.___________._________ |
Subnet mask (netmask) | ___________.___________.___________._________ |
Default gateway (router) | ___________.___________.___________._________ |
Follow these steps to assign the IP information to the switch:
Step 1 Enter Y at the first prompt:
Continue with configuration dialog? [yes/no]: y
If this prompt does not appear, enter enable, and press Return. Enter setup, and press Return to start the setup program.
Step 2 Enter the switch IP address, and press Return:
Enter IP address: ip_address
Step 3 Enter the subnet mask (IP netmask) address, and press Return:
Enter IP netmask: ip_netmask
Step 4 Enter Y to enter a default gateway (router) address:
Would you like to enter a default gateway address? [yes]: y
Step 5 Enter the IP address of the default gateway (router), and press Return:
Enter router IP address: IP_address
Step 6 Enter a host name, and press Return:
Enter host name: host_name
Step 7 Enter a secret password (which ensures switch security), and press Return:
Enter enable secret password: <secret_password>
The initial configuration displays:
The following configuration command script was created:
interface VLAN1
ip address IP_address IP_netmask
ip default-gateway IP_address
enable secret 5 $1$jJql$VA6U.6uTjsa56Xx2yy/t30
snmp community private rw
snmp community public ro
!
end
!
Use this configuration? [yes/no]:
Step 8 Verify that the addresses are correct.
Enter Y, and press Return if the displayed information is correct. If this information is not correct, enter N, press Return, and begin again at Step 2.
When you see the message "Press RETURN to get started," the setup program is complete. You can use your browser and CVSM (or the CLI) to continue the switch management session.
The Cisco IOS Desktop Switching Software Configuration Guide describes how to set a password to protect the switch against unauthorized Telnet access and how to access the switch if you forget the password.
When a switch starts and no IP address is assigned, it transmits a BOOTP broadcast requesting a mapping for its physical MAC address; this request is sent to all ports with a physical connection to the switch. A valid response must contain an IP address and can contain the subnet mask and default gateway address. If the switch receives a valid BOOTP response immediately, the remainder of the system protocol suite is activated.
A valid BOOTP response sets the IP information in the running configuration, but this information is not updated in the saved configuration in Flash memory. To update the IP information in the saved-configuration file, log in to the CLI, and enter the write memory command. This command records the IP information in the saved-configuration file, and no BOOTP request is required when the switch is reset.
After you assign IP information, the switch can operate with the default configuration shown in Table 2-1.
| Feature | Default Setting | |
|---|---|---|
| Management | ||
| Switch IP address, subnet mask, and default gateway | |
CDP1 | Enabled. | |
| ARP2 | Enabled. |
| Static address assignment | None assigned. |
| Network View | Always available. |
| VLAN3 membership | All ports are static-access ports in VLAN 1. |
| Performance | ||
Autonegotiation of duplex mode | Enabled. | |
Autonegotiation of port speeds | Enabled. | |
| Flooding Control |
| |
Broadcast storm control | Disabled. | |
| Flooding unknown unicast and multicast packets | |
| Network port | Disabled. |
| CGMP4 | Enabled. |
| Network Redundancy |
| |
Spanning-Tree Protocol | Enabled. | |
Port grouping | None assigned. | |
| Diagnostics |
| |
SPAN port monitoring | Disabled. | |
Console, buffer, and file logging | Disabled. | |
| Security |
| |
Password | None. | |
Addressing security | Disabled. | |
Trap manager | 0.0.0.0. | |
Community strings | public. | |
Port security | Disabled. | |
| 1CDP = Cisco Discovery Protocol 2ARP = Address Resolution Protocol 3VLAN = Virtual Local Area Network 4CGMP = Cisco Group Management Protocol |
You can operate the switch with the default configuration shown in Table 2-1, or you can use one of the following management options to change the default configuration:
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Posted: Thu Apr 13 18:00:58 PDT 2000
Copyright 1989 - 2000©Cisco Systems Inc.