Cisco Catalyst 4500e Series User Manual

1-32
Catalyst 4500 E-Series Switches Installation Guide
OL-13972-01
Chapter 1 Product Overview
System Architecture
Power Flow
Figure 1-17 shows power ingress and flow through the system.
Figure 1-17 Power Flow
Power enters the switch through the power supplies. Several types of power supplies are available,
depending on the power needs for your system and the power type available on your site. All power
supplies provide a 3.3 V circuit (shown as a dash-dot line) to the components on the backplane and a
12
V circuit (shown as a solid line) that is carried over the backplane to the fans, supervisor engine, and
switching modules. Power supplies that support PoE (1300 W AC, 2800 W AC, 4200 W AC or 1400 W
DC) also provide a –48 V circuit (shown as a dashed line) to PoE-enabled switching modules, which is
then available to the powered device connected to the switching module.
Note The Supervisor Engine II-Plus TS has internal DC-to-DC converters that use the 12 V circuit to provide
PoE to powered devices connected to the Supervisor engine only. If your system has a Supervisor Engine
II-Plus TS in slot 1, you still need a PoE-enabled power supply to provide PoE to the other slots.
All Catalyst 4500 E-series switches support dual power supplies, configurable for combined mode or
redundant mode. In combined mode, the switch has available the combined rated wattage of both power
supplies, less some expected efficiency loss. In redundant mode, one power supply provides power to
the system and the other supply is on standby should there be a failure in either the power supply or the
input voltage source it is connected to.
Power over Ethernet
The Cisco Catalyst 4500 E-series switches support the 802.3af standard for PoE on 10/100 or
10/100/1000 ports, enabling customers to support telephones, wireless base stations, video cameras, and
other appliances. PoE makes it possible to place devices in unique locations without having to provide
Ingress to PS Ingress to PS
IP
Backplane
PS1 PS2
Fan
tray
120919
Supervisor engine
Switching module
Switching module
12 V
3.3 V
48 V

Cisco Catalyst 4500e Series Specifications

General

Series	Catalyst 4500E Series
Stackable	No
Chassis Options	3-slot, 6-slot, 7-slot, 10-slot
Power Supply Options	AC, DC
Redundancy	Power supply redundancy, supervisor engine redundancy (1+1)
Layer Support	Layer 2
Virtualization	Yes (Virtual Switching System - VSS)
Form Factor	Modular
Ports	Gigabit Ethernet, 10 Gigabit Ethernet, 40 Gigabit Ethernet, and 100 Gigabit Ethernet options depending on the line cards
Jumbo Frame Support	Yes
Features	Flexible NetFlow, TrustSec
Maximum Port Density	Up to 384 ports per chassis
Operating System	Cisco IOS XE
Management	CLI, SNMP, Cisco Prime Infrastructure, Cisco DNA Center
Security Features	802.1X
VLAN Support	Up to 4096 VLANs
QoS Support	Yes
Supervisor Engine Options	Sup8-E