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Catalyst 2960 Switch Hardware Installation Guide
OL-7075-09
Chapter 1 Product Overview
Front Panel Description
SFP Module Slots
The Catalyst 2960 switches (other than those listed) use Gigabit Ethernet SFP modules for Gigabit
uplink connections and 100-Megabit SFP modules for 100-Megabit connections to establish fiber-optic
connections. These Catalyst 2960 switches do not have an SFP module slot:
•
Catalyst 2960PD-8TT-L
•
Catalyst 2960-24LT-L
•
Catalyst 2960-24-S
•
Catalyst 2960-24TT-L
•
Catalyst 2960-48TT-L
•
Catalyst 2960-48TT-S
The transceiver modules are field-replaceable, providing the uplink interfaces when you insert an
SFP module. You can use the SFP modules for Gigabit uplink connections to other switches. You use
fiber-optic cables with LC connectors to connect to a fiber-optic SFP module. You use Category 5 or
higher cable with RJ-45 connectors to connect to a copper SFP module.
For more information about these SFP modules, see your SFP module documentation or the release notes
for your switch software. For more information about cabling requirements, see
Appendix B,
“Connector and Cable Specifications.”
Dual-Purpose Port
You can configure a dual-purpose port as either a 10/100/1000 port or as an SFP module port. Each port
is considered as a single interface with dual front ends—an RJ-45 connector and an SFP module
connector. The dual front ends are not redundant interfaces. The switch activates only one connector of
the pair at a time.
By default, the switch dynamically selects the interface type that first links up. However, you can use
the
media-type interface configuration
command to manually select the RJ-45 connector or the
SFP module connector. For information about configuring speed and duplex settings for a dual-purpose
uplink, see the software configuration guide.
Each uplink port has two LEDs: one shows the status of the RJ-45 port, and one shows the status of the
SFP module port. The port LED is on the active connector.
Power Input Port (Catalyst 2960PD-8TT-L Switch)
The Catalyst 2960PD-8TT-L can receive power from these sources:
1.
Through a 10/100/1000 port from an upstream Ethernet switch that provides power (complies with
IEEE 802.3af). (See
Figure 1-21
.)
2.
Through an external AC power adapter that connects to the back of the switch. This external power
adapter (PWR-A=) is not included with the switch, but you can order it from your Cisco
representative. (See
Figure 1-22
.)
