10Base-Tx Network; 1000Base-Fx Network - Enterasys SecureStack B2 B2G124-48P Hardware Installation Manual

10BASE-TX Network

10BASE-TX Network
When connecting a 10BASE‐TX segment to one of the RJ45 fixed ports (1 through 48) on
both the B2G124‐48P and the B2H124‐48P, ensure that the network meets the Ethernet
network requirements of the IEEE 802.3‐2002 standard for 10BASE‐TX. Refer to the
Cabling Guide for details.
100BASE-TX Network
When connecting a 100BASE‐TX segment to one of the RJ45 fixed ports (1 through 48) on
both the B2G124‐48P and the B2H124‐48P, use Category 5 UTP cabling. The switch at the
other end of the twisted pair segment must meet IEEE 802.3‐2002 100BASE‐TX Fast
Ethernet network requirements for the switches to operate at 100 Mbps.

1000BASE-FX Network

The Mini‐GBIC port sockets on the B2G124‐48P and B2H124‐48P enable you to vary the
type of 1‐Gbps port connection. The device at the other end of the segment must meet the
same Gigabit Ethernet requirements for the connected devices to operate at 1‐Gigabit
speed. At the printing of this document there were five Mini‐GBICs available that support
fiber‐optic connections, as listed below, and one that supports a copper connection as
described in "1000BASE‐T Network" on page 2‐3:
• MGBIC‐LC01 for a 1000BASE‐SX compliant LC fiber‐optic multimode connection
• MGBIC‐LC03 for a 1000BASE‐SX standard LC duplex style connector multimode
connection
• MGBIC‐LC09 for a 1000BASE‐LX compliant LC fiber‐optic single‐mode connection
• MGBIC‐MT01 for a 1000BASE‐SX compliant MT‐RJ fiber‐optic multimode connection
• MGBIC‐08 for a 1000BASE‐ELX compliant LC fiber‐optic single‐mode connection
2-2 Network Requirements
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
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
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.
1000BASE-T Network
or at 10, 100, or 1000 Mbps (B2G124-48P
),
(page 2-3) for information
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