Overview
1-2 Introduction
TheswitchalsosupportstheuseofaredundantDCpowersupplytohelpprevent
downtimeduetoaninternalpowersupplyfailureintheswitchorACpowersou rce.
YoucaninstalltheSecureStackA2 onaflatsurfaceorintoastandard19‐inchrackwith
user‐suppliedmountinghardware,andconfigurethe
SecureStackA2functionsusingthe
WebView™application,CLIswitchingcommands,and/orSNMP.
A2H254-16
TheA2H254‐16(Figure1‐1)hasseveraltypesoffrontpanelportsandrearpanel
connections,whichinclude:
•Eight100BASE‐T10/100MbpscopperRJ45ports(oddnumbered1‐15)
•Eight100BASE‐FXmultimodeMT‐RJports(evennumbered2‐16)
•TwoSFPslotslabeledport19and20thatsupport
– optionalMini‐GBIC1000BASE‐TEthernetovercopperRJ45connectionsfor1000
Mbpsoperation
– optional1000BASE‐SX/LX/ELXfiber‐opticconnections
•Two1000BASE‐TRJ45portslabeled17and18whichcanbeusedinastack
configurationaswellasstandardGigabitEthernetswitchportswhenconfiguredasa
standaloneswitch.
•RearpanelRedundantPowerSupplyconnectorfor aredundantpowersupply
connection.TheswitchconnectstoanEnterasysC2RPS‐SYS
usingaC2RPS‐PSM
Cable.
Caution: The A2H254-16 is not a PoE-compliant device. Do not connect a SecureStack
C2 PoE Redundant Power System (C2RPS-POE) to the power connector. Otherwise,
damage to the device may result.
Precaución: El dispositivo A2H254-16 no cumple con el estándar PoE. No conecte una
fuente de poder redundante (RPS) SecureStack C2 PoE (C2RPS-POE) al cable de
corriente directa. De lo contrario, el dispositivo puede dañarse.
Note: The 1000BASE-T built-in RJ45 stacking ports 17 and 18 on the A2H254-16 can be
configured as standard 10/100/1000BASE-T switch ports, using the command “set switch
stackport <ethernet | stack>” when the unit is in standalone mode (not stacked).
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