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22
C
1: I
HAPTER
NTRODUCING THE
Configuration Rules
for Gigabit
Ethernet
Configuration Rules
for the 3300 SM
S
3300 SM
WITCH
Gigabit Ethernet is designed to run over four media:
Single-mode fiber optic cable, with connections up to 5km.
Multimode fiber optic cable, with connections up to 550m.
Balanced, shielded copper cabling, with connections up to 25m.
Category 5 cabling, with connections up to 100m.
Table 4 Gigabit Ethernet cabling
Gigabit Ethernet
Transceivers
Fiber Type
1000BASE-LX
62.5 m MM
50 m MM
50 m MM
10 m SM
1000BASE-SX
62.5 m MM
62.5 m MM
50 m MM
50 m MM
1000BASE-CX
N/A
1000BASE-T
N/A
MM = Multimode
SM = Single-mode
The Switch has a Gigabit Ethernet fiber optic 1000BASE-SX port that
provides a 1000Mbps full duplex connection to another Gigabit Ethernet
device. Full duplex allows packets to be transmitted and received
simultaneously and, in effect, doubles the potential throughput of a link.
For the SuperStack II Switch 3300 SM:
Use Multimode fiber optic cable (see
The 1000BASE-SX port is permanently fixed at 1000Mbps with full
duplex.
Modal
Lengths Supported
Bandwidth
Specified by IEEE
(MHz/km)
(meters)
500
2–550
400
2–550
500
2–550
N/A
2–5000
160
2–220
120
2–275
400
2–500
500
2–550
N/A
25
N/A
100
Table 4
for details).
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