2E43-51/2E43-51R User’s Guide2-1CHAPTER 2NETWORK REQUIREMENTSThis chapter contains networking guidelines. Before installing and usingthe 2E43-51 or an optional Fast Ethernet Interface Module (FE-100TX,FE-100FX, or FE-100F3), review the requirements and specificationsoutlined in this chapter concerning the following:• SmartTrunk (Section 2.1)• 10BASE-T Twisted Pair Network (Section 2.2)• 100BASE-TX Twisted Pair Network (Section 2.3)• 100BASE-FX Fiber Optic Network (Section 2.4)The network installation must meet the guidelines to ensure satisfactoryperformance of this equipment. Failure to follow the guidelines mayproduce poor network performance.2.1 SmartTrunkTo connect the 2E43-51 into a network so that it can take advantage of theSmartTrunk feature, there are certain rules concerning port connectionsand configurations that must be followed for proper operation. Refer tothe Cabletron Systems SmartTrunk User’s Guide for additionalinformation.2.2 10BASE-T NETWORKWhen connecting a 10BASE-T segment to any of the 2E43-51 ports(ENET 1 through ENET 4), ensure that the network meets IEEE 802.3Ethernet network requirements for 10BASE-T. Refer to the CabletronSystems Cabling Guide for details.NOTEThe Cabletron SystemsCabling Guide andSmartTrunk User’sGuide, referred to in the following sections, can be found on theCabletron Systems World Wide Website: http://www.cabletron.com/