10BASE-TX Network
2-2 Network Requirements
10BASE-TX Network
Whenconnectinga10BASE‐TXsegmenttooneoftheRJ45fixedports(1through48)on
boththeB2G124‐48PandtheB2H124‐48P,ensurethatthenetworkmeetstheEthernet
networkrequirementsoftheIEEE802.3‐2002stand ardfor10BASE‐TX.Refertothe
CablingGuidefordetails.
100BASE-TX Network
Whenconnectinga100BASE‐TXsegmenttooneoftheRJ45fixedports(1through48)on
boththeB2G124‐48Pand theB2H124‐48P,useCategory5UTPcabling.Theswitchatthe
otherendofthetwistedpairsegmentmustmeetIEEE802.3‐2002100BASE‐TXFast
Ethernetnetwork
requirementsfortheswitchestooperateat100 Mbps.
1000BASE-FX Network
TheMini‐GBICportsocketsontheB2G124‐48PandB2H124‐48Penableyoutovarythe
typeof1‐Gbpsportconnection.Thedeviceattheotherendofthesegmentmustmeetthe
sameGigabitEthernetrequirementsfortheconnecteddevicestooperateat1‐Gigabit
speed.Atthe
printingofthisdocume nttherewerefiveMini‐GBICsavailablethatsupport
fiber‐opticconnections,aslistedbelow, and onethatsupportsacopperconnectionas
describedin“1000BASE‐TNetwork”onpage 2‐3:
•MGBIC‐LC01fora1000BASE‐SXcompliantLCfiber‐opticmultimodeconnection
•MGBIC‐LC03fora
1000BASE‐SXstandardLCduplexstyleconnectormultimod e
connection
•MGBIC‐LC09fora1000BASE‐LXcompliantLCfiber‐opticsingle‐modeconnection
•MGBIC‐MT01fora1000BASE‐SXcompliantMT‐RJfiber‐opticmultimodeconnection
•MGBIC‐08fora1000BASE‐ELXcompliantLCfiber‐opticsingle‐modeconnection
Note: If a port is to operate at 100 or 1000 Mbps, Category 5 cabling must be used.
Category 3 cabling does not meet the 100 or 1000 Mbps specifications. For 10 Mbps
operation only, Category 3, Category 4, or Category 5 cabling can be used. Refer to
100BASE-TX Network (page 2-2) and 1000BASE-T Network (page 2-3) for information
about 100BASE-TX and 1000BASE-T networks and cabling.
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.
Depending on the switch used, the fixed switch ports are capable of operating at 10 or
100 Mbps (B2H124-48P
),orat10, 100, or 1000 Mbps (B2G124-48P). This is
accomplished when Auto-Negotiation is enabled, allowing the switch to automatically
sense the transmission speed of the other device and adjust for the speed accordingly.
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