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Cisco Catalyst 3920 Installation Manual

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Installing the Catalyst 3920
This chapter explains the process you should follow to install the Catalyst 3920 Token Ring Switch.
Planning for Installation
Read this section carefully before installing the Catalyst 3920 Token Ring Switch. It contains the
information on preinstallation planning.
Note
Warning
If you have a large network, we recommend that you create a sketch of the network to which you
will add one or more Catalyst 3920 switches. Include major network elements such as hubs and
concentrators, servers, bridges, and routers.
To plan for the installation of a Catalyst 3920, obtain all connectivity and physical planning
information about the network segments to which you will attach. In addition, if you are planning to
use permanently installed telecommunications wiring, you should have information about the
cabling installation that will allow you to determine the termination points of every cable, the cable
type, connector type (if any), and the distance between termination points. Building floorplans and
telecommunications closet layouts are also useful.
Cabling Used Between Devices
Devices attached to the RJ-45 jacks on the front of the Catalyst 3920 should conform to the cabling
rules established in the EIA/TIA 568A and ISO/IEC 11801:1995. Straight-through cables should
always be used for the Token Ring ports. Because all ports operate at 120-ohm, no
impedance-matching balun or filtering is required for UTP or STP.
For more information about cabling distances and specifications, refer to the "Cable and Pin
Information" appendix for cable design specifications.
Before installing the Catalyst 3920, read the "Safety Warnings" appendix.
Read the installation instructions before you connect the system to its power source.
C H A P T E R
3
Installing the Catalyst 3920 3-1

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Summary of Contents for Cisco Catalyst 3920

  • Page 1 Cabling Used Between Devices Devices attached to the RJ-45 jacks on the front of the Catalyst 3920 should conform to the cabling rules established in the EIA/TIA 568A and ISO/IEC 11801:1995. Straight-through cables should always be used for the Token Ring ports.

  • Page 2: Installation Summary

    4, or 5 can be used. IBM Cabling System 150-ohm, STP cables (types 1 and 9) can also be used. Because the RJ-45 connectors on the Catalyst 3920 use pins 3, 4, 5, and 6, a cable with an IBM STP data connector on one end and an RJ-45 connector on the other must be constructed.

  • Page 3: Gathering Other Materials You Will Need

    Rack Mounting the Catalyst 3920 Only fixed brackets are supplied with these units. If you want to install a sliding pull-out mount, you will need to provide the extra mounting hardware. Follow these steps to mount the Catalyst 3920 in a rack:...
  • Page 4 Step 4 Position the Catalyst 3920 in the rack or cabinet and slide it up or down until the rack holes line up with the bracket holes. Attach the Catalyst 3920 to the rack with the appropriate mounting screws (see Figure 3-2).

  • Page 5: Cabling The Catalyst 3920

    Connecting Devices to the Token Ring Ports Using Building Wiring Use this procedure if you will use in-the-wall cables to connect devices to the Catalyst 3920. Using the Cabling Chart provided by your administrator as a guide, connect the cables Step 1 between the devices and the faceplates.

  • Page 6: Cabling A Catalyst Stack Configuration

    Continue with the instructions in the “Powering On the Catalyst 3920” section. Step 5 Cabling a Catalyst Stack Configuration As an option, you can configure your Catalyst 3920 as a part of a Catalyst stack. There are two Catalyst stack configurations. •...

  • Page 7: Connecting Catalyst Switches To The Catalyst Matrix

    100-127 v~ 200-240 v~ RPS Present RPS Good INT PS GOOD EIA 232 Figure 3-5 Connecting the Other End of the Cable to the Other Catalyst 3920 100-127 v~ 200-240 v~ RPS Present RPS Good INT PS GOOD EIA 232 Connecting Catalyst Switches to the Catalyst Matrix Up to eight Catalyst switches can be connected to a Catalyst Matrix.

  • Page 8: Powering On The Catalyst 3920

    Connect the power cord to the Catalyst 3920 and then to an electrical outlet. The Catalyst 3920 is powered on when you plug in the power cord. There is no power switch. If you are using an RPS system, connect the RPS port of the Catalyst 3920 to the RPS Step 2 system.

  • Page 9: Powering On A Stack Of Catalyst 3920S

    Verify that the PWR LED is on for each module in the Catalyst Matrix. For the Catalyst 3920, verify that the PWR LED on the left side of the front panel is on. If it is not on, ensure that the outlet is working correctly. If the outlet is working but the PWR...
  • Page 10 Powering On the Catalyst 3920 3-10 Catalyst 3920 Token Ring Switch User Guide...

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