Cabletron Systems 2H253-25R Installation & User Manual

Contents

Cabletron Systems 2H253-25R Installation & User Manual Manual pdf 38 page image

Connecting to the Network3-8 Installation2. Observe the LANVIEW LEDs. After a successful boot, the PWR LED turns ON (green). If thePWR LED is amber, there is no power redundancy. Check the power cord connections and thepower source. If there are no problems with the power cord connections or power source andthe PWR LED is still amber, contact Cabletron Systems for support. Refer to Section 1.2 fordetails.3.4 CONNECTING TO THE NETWORKThis section provides the procedures for connecting unshielded twisted pair (UTP) segments fromthe network or other devices to the 2H253-25R. To make connections to an optional HSIM orVHSIM installed in the HSIM/VHSIM slot of the 2H253-25R, refer to the associated user’s guidefor the HSIM or VHSIM.Each of the two RJ21 connectors on the front panel have 12 UTP port connections. These ports (1through 24) are 10/100 ports with internal crossovers. When connecting a workstation, use astraight-through cable. When connecting networking devices, such as another bridge, repeater, orrouter, use a crossover cable.To connect an RJ21, proceed as follows:1. Ensure that the device connected to the other end of the segment is powered on.2. If using an RJ21 straight connector, plug it into the appropriate RJ21 port as shown inFigure 3-6.NOTEIf the 2H253-25R is being installed in a network using SmartTrunking, there are rulesconcerning the network cable and port configurations that must be followed forSmartTrunking to operate properly. Before connecting the cables, refer to the CabletronSystemsSmartTrunk User’s Guide for the configuration information.NOTEIf a port is connected to a 10-Mbps segment, Category 3 Unshielded Twisted Pair (UTP)cable is sufficient to use. However, if the segment is to carry 10- or 100-Mbpstransmissions, use only Category 5 UTP cabling that has an impedance of between 85and 111 ohms.