Cisco Systems CX-TRIP4, CX-TRIP2 Installation Prerequisites, Ring Speed Considerations, Safety

Installation Prerequisites

Installation Prerequisites

This section provides a list of parts and tools you will need to perform the installation, and safety and ESD-prevention guidelines to help you to avoid injury and damage to the equipment. It also provides a detailed description of the online insertion and removal (OIR) function to help you perform online installation successfully and avoid error message and system restarts. If you are installing a new TRIP, be sure to review the equipment descriptions and distance limitations in the section “Distance Limitations for Token Ring Connections” on page 11 when preparing your site and planning network connections.

Distance Limitations for Token Ring Connections

The maximum transmission distance is not defined for IEEE 802.5 (Token Ring) networks. Shielded twisted-0pair cabling is most commonly used for rates of 4 and 16 Mbps. Twisted pair cabling is more susceptible to interference than other types of cabling; therefore, the network length and repeater spacing should be planned accordingly.

Ring Speed Considerations

Before you install the TRIP, determine the ring speed (4 or 16 Mbps) of each ring to be connected to the server. There is no factory default for the interface speed; you must set the speed of each interface (within the setup command facility or with the ring-speedcommand) before you bring the interface up and insert it into the ring with the no shutdown command.

If an interface has an undefined or incorrect ring speed and is not shut down, the ring will beacon.

This effectively takes the ring down and makes it inoperable.

Safety

Following are safety guidelines that you should follow when working with any equipment that connects to electrical power or telephone wiring.

Electrical Equipment Safety

Follow these basic guidelines when working with any electrical equipment:

•Before beginning any procedures requiring access to the chassis interior, locate the emergency power off switch for the room in which you are working.

•Disconnect all power and external cables before moving a chassis.

•Do not work alone when potentially hazardous conditions exist.

•Never assume that power has been disconnected from a circuit; always check.

•Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.

•Carefully examine your work area for possible hazards such as moist floors, ungrounded power extension cables, and missing safety grounds.

Token Ring Interface Processor (TRIP) Installation and Configuration 11