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Cisco Catalyst 3650 Series Guide

Cisco Catalyst 3650 Series
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2-20
Catalyst 3650 Switch Hardware Installation Guide
OL-29734-01
Chapter 2 Switch Installation
Connecting Devices to the Ethernet Ports
The autonegotiation feature is enabled by default on the switch. At this setting, the switch ports
configure themselves to operate at the speed of attached device. If the attached device does not support
autonegotiation, you can explicitly set the switch port speed and duplex parameters. To maximize
performance, either let the ports autonegotiate both speed and duplex, or set the port speed and duplex
parameters on both ends of the connection.
For simplified cabling, the automatic medium-dependent interface crossover (auto-MDIX) feature is
enabled by default on the switch. With auto-MDIX enabled, the switch detects the required cable type
for copper Ethernet connections and configures the interface accordingly. Therefore, you can use either
a crossover or a straight-through cable for connections to a switch 10/100/1000 Ethernet port regardless
of the type of device on the other end of the connection.
See the switch software configuration guide or the switch command reference on Cisco.com for more
information about enabling or disabling autonegotiation and auto-MDIX.
If auto-MDIX is disabled, use the guidelines in Table 2-1 to select the correct cable for connecting the
switch 10/100/1000 Ethernet ports to other devices. See the “Cable and Adapter Specifications” section
on page B-5 for cable-pinout descriptions.

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Cisco Catalyst 3650 Series Specifications

General IconGeneral
RAM4 GB
Flash Memory4 GB
Ports24 or 48 10/100/1000 Ethernet ports
Uplinks4 x 1G SFP or 4 x 10G SFP+ (depending on model)
StackingUp to 9 switches with StackWise-160
Layer SupportLayer 2, Layer 3
SoftwareCisco IOS Software
Power SupplyInternal power supply; optional redundant power supply available
Storage Temperature-40°F to 158°F (-40°C to 70°C)

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