Fast Ethernet Switch Installation Guide

N ETWORK P LANNING
2-4
Uplink Connections
The switch provides 24 downlink fiber ports, two combo RJ-45/SFP
uplink ports built into the switch, and two slots for optional combo RJ-45/
SFP modules. The uplink ports can be trunked together to provide a
high-bandwidth connection to a core switch or router at the CO. Besides
balancing the load across each port in the trunk, the additional port
provides redundancy by taking over the load if the other trunk port fails.
The figure below illustrates a trunk connection to other switches.
Figure 2-2 Uplink Fiber Connections
Layer 2/3 Switch
Link to Internet POP
1000BASE-BX fiber trunk
connection to Layer 2/3 switch
(up to 10 km)
FTTH Switch
Internet
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