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Alteon Web Switch Hardware Installation Guide
Chapter 2: Installing the Switch Hardware
21
212779-A, December 2001
Gigabit Ethernet via the Fiber Optic SC Connector
The figure below illustrates an SC-type connector used for Gigabit Ethernet fiber optic connec-
tions on the Alteon Web switches:
Figure 9 Fiber Optic Connector for Alteon Web Switches
The following table lists the cable characteristics for connecting to 1000Base-SX ports.
10/100 Mbps Ethernet via the RJ-45 Connector
Use a straight-through cable on the 10/100 Mbps ports if the device attached to the port is a
computer. If the device is a switch, hub, or router, use a crossover cable. See the figure below
for cabling details. You can use a straight-through cable with a switch, hub, or router if it has
an uplink enable/disable switch that you can set.
Figure 10 Pin Assignments for 10/100 Mbps Port Cables
Table 4 1000Base-SX Link Characteristics
Description 62.5 Micron 50 Micron
Shortwave (850 nm multimode fiber)
Operating Range 2 to 260 meters 2 to 550 meters
(in compliance with IEEE 802.3z)
003
pin 1
pin 2
pin 3
pin 6
pin 1
pin 2
pin 3
pin 6
Switch
10/100 Mbps Port
Computer
Port
pin 1
pin 2
pin 3
pin 6
pin 3
pin 6
pin 1
pin 2
Switch
10/100 Mbps Port
Hub, Switch,
or Router Port
Straight-through cable Crossover cable