Installation guide

1-3
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
Chapter 1 Product Overview
Features
• The switches support these SFP modules:
– 1000BASE-SX
– 1000BASE-LX
– 1000BASE-ZX
– 100BASE-FX
– 1000BASE-T
– CWDM
Note When installed in Catalyst 3750 switches, 1000BASE-T SFP modules can
either operate at 10, 100, or 1000 Mbps in full-duplex mode or in
half-duplex mode at 10 or 100 Mbps.
• For a list of the XENPAK modules that the Catalyst 3750G-16TD switch
supports, see the Catalyst 3750 release notes.
• Configuration
– For 10/100 ports, autonegotiates the speed and duplex settings
– For 10/100/1000 ports, autonegotiates the speed and supports only
full-duplex mode
Note You can configure duplex mode to half, full, or autonegotiate on
Gigabit Ethernet interfaces if the speed is set to 10 or 100 Mbps. You
cannot configure half-duplex mode on Gigabit Ethernet interfaces if
the interface speed is 1000 Mbps.
• The Catalyst 3750 switches support stacking. You can stack up to nine
switches in a stack by cabling the StackWise ports. StackWise ports are not
user-configurable.
• Switches are hot-swappable
• Power redundancy
– Connection for optional Cisco RPS 675 redundant power system that
operates on AC input and supplies backup DC power output to the family
of Catalyst 3750 switches.