•
Support for prestandard Cisco powered devices.
•
Configuration for StackPower. When the switch internal power supply module(s) cannot support the
total load, StackPower configurations allow the switch to leverage power available from other switches.
•
Configurable support for Cisco intelligent power management, including enhanced power negotiation,
power reservation, and per-port power policing.
Depending on the installed power supply modules, each port can deliver up to 60 W of Cisco UPOE. See the
Power Supply Modules, on page 26
for the power supply matrix that defines the available PoE, PoE+, and
Cisco UPOE power per port. The output of the PoE+ circuit has been evaluated as a Limited Power Source
(LPS) per IEC 60950-1.
Restrictions for the WS-C3850-12X48U-L, WS-C3850-12X48U-S and WS-C3850-12X48U-E switch
models:
Note
•
A maximum of 28 ports are available for UPoE connections. This is because some power from the
power supplies is diverted to the switch, and only the remaining power is transmitted to the ports.
SFP and QSFP Module Slots
The uplink and downlink ports for the Catalyst WS-C3850 switch models are as follows.
•
The downlink ports on the Catalyst WS-C3850-12S and WS-C3850-24S switch models support standard
SFP modules.
•
The downlink ports on the Catalyst WS-C3850-12XS and WS-C3850-24XS switch models support
standard SFP+ modules.
•
The 10G downlink ports on the Catalyst WS-C3850-48XS-S, WS-C3850-48XS-F-S, WS-C3850-48XS-E
and WS-C3850-48XS-F-E switch models support standard SFP+ modules.
•
The 40G downlink ports on the Catalyst WS-C3850-48XS-S, WS-C3850-48XS-F-S, WS-C3850-48XS-E
and WS-C3850-48XS-F-E switch models support standard QSFP modules.
For supported SFP modules, refer to the Cisco Transceiver Modules Compatibility Information at
http://
www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_tables_list.html
For information about the (uplink) SFP module slots on the network modules, see
Network Modules, on
page 10
.
Note
Management Ports
The management ports connect the switch to a PC running Microsoft Windows or to a terminal server.
•
Ethernet management port. See
Ethernet Management Port, on page 31
.
•
RJ-45 console port (EIA/TIA-232). See
RJ-45 Console Port, on page 32
.
Catalyst 3850 Switch Hardware Installation Guide
8
OL-26779-05
Product Overview
SFP and QSFP Module Slots
