100BASE-TX Network
2-2 Network Requirements
100BASE-TX Network
Whenconnectinga100BASE‐TXsegmenttooneofthefixedports(1 through24),use
Category5UTPcabling.Theswitchattheotherendofthetwistedpairsegmentmust
meetIEEE802.3‐2002100BASE‐TXFastEthernetnetworkrequirementsfortheswitchesto
operateat100 Mbps.
1000BASE-T Network
TheRJ45fixedfrontpanelconnectorssupportcopper1000BASE‐Tcompliantconnections.
Whenconnectinga1000BASE‐TsegmenttooneoftheRJ45fixedportsuseCategory5
UTPcabling.Thedeviceattheotherendofthetwistedpairsegmentmustmeet
IEEE 802.3‐20021000BASE‐TGigabitEthernetnetworkrequirements
forthedevicesto
operateat1000 Mbps.
10GBASE-XX Network
Thetwooptionalinterfacefront‐panelportslots(25and26)supportXFPIEEE 802.3ae
10‐GigabitEthernet(10 GbE)fiber‐opticmodules.Asoftheprintingofthisguide,the
10GBASE‐SR ‐XFP,10GBASE‐LR‐XFP,and10 GBASE‐ER‐XFP
areavailable.These
10‐GigabitEthernetinterfacesarebasedupontheXFPMulti‐sourceAgreement(MSA).
ThisMSAdefinesafiber‐optictransceivermodule,whichconformstotheIEEE802.3ae
10‐GigabitEthernet(10GbE)standardandincludesallphysicalmediadependent(PMD)
typesdefinedbytheIEEEfor802.3ae10
GbE.
Toobtainthemaximumbenefitsof10 GbE,carefullyconsiderthecablingtype(for
example,single‐modeormultimodefiber)andtheperformanceataspecifiedwavelength.
Theperformanceischaracterizedbychannelinsertionloss(cablingattenuation)and
modalbandwidth(formultimodefiber).
Table 2‐1providesthecabletype,maximumlength,
andconnectortypeaccordingtoeach
versionofXFP.Forcompletespecifications,referto“SupportedXFPTransceiverInterface
Options”onpage A‐3.
Note: When using the fixed ports on the switch for 100 Mbps operation use Category 5
UTP cabling with an impedance between 85 and 111 ohms for 100 Mbps operation.
The fixed switch ports are capable of operating at 10, 100, or 1000 Mbps. This is
accomplished by the switch when Auto-Negotiation is enabled. This enables the switch to
automatically sense the transmission speed of the other device and adjust for the speed
accordingly.
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