Cisco catalyst 9200 series switches data sheet

Cisco Catalyst 9200 Series Switch Architecture White Paper

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Enterprise campus networks are undergoing profound changes to support ever-increasing bandwidth demands on the access layer, heightened by the introduction of 802.11ac and Wi-Fi 6 and the rapid growth of powerful endpoints requiring speeds from 10 Mbps to 10 Gbps. These networks are in dire need of an infrastructure that can scale rapidly and accommodate the new breed of endpoints without the need to replace the complete cabling infrastructure.

Cisco ® Catalyst ® 9200 Series Switches are the foundation of Cisco’s next-generation enterprise-class access layer solutions. These fixed, stackable switches are sold in various configurations, including data, Power over Ethernet Plus (PoE+), and Multigigabit models. They deliver exceptional table scales (MAC/route/ACL) and buffering capabilities for enterprise applications. The Cisco Catalyst 9200 Series platform delivers up to 392 Gbps of switching capacity in standalone mode and 472 Gbps when stacked as eight-member switches, with up to 292 Million Packets Per Second (Mpps) of forwarding performance. The platform’s stacking capability provides a flexible, pay-as-you-grow model as well as simplicity in the ability to manage multiple switches as a single logical switch. The switches provide two kinds of model types for different access layer requirements. C9200 models offer modular uplink options and FRU-able redundant power supplies. C9200L models offer fixed uplink options. Both provide non-blocking 1 Gigabit Ethernet and Multigigabit speeds (100 Mbps to 1, 2.5, 5, and 10 Gbps) over PoE+-capable copper ports. The two models offer uplink options that support nonblocking 40G Quad Small Form-Factor Pluggable (QSFP+) and 25G SFP28, 10G SFP+, and 1G SFP to meet diverse campus needs when connecting to aggregation or core devices.

This white paper provides an architectural overview of the Cisco Catalyst 9200 Series chassis, including system design, power, and cooling.

The Cisco Catalyst 9200 Series platform consists of fixed-configuration switches with airflow from the front and sides to the back. They are based on the Cisco Unified Access ® Data Plane 2.0 mini (UADP) architecture, which not only protects your investment because of flexible and programmable pipelines but also allows a larger scale and higher throughput. The platform runs on the open Cisco IOS ® XE Lite operating system, which supports model-driven programmability. Further, it supports all the foundational highavailability capabilities, including Cisco StackWise ® -160 and StackWise-80 with stateful switchover, Platinum-efficient dual redundant power supplies, and variable-speed, high-efficiency, redundant fans.

Cisco Catalyst 9200 Series Switches

The Cisco Catalyst 9200 Series includes the switches listed below, with variable port speeds and densities to meet the ever-increasing performance demands of enterprise campus environments and provide an architectural foundation for next-generation hardware features and scalability.

1G switches – C9200L fixed uplink models

Data-only switches (each with 1x UADP 2.0 mini ASIC)

C9200L-24T-4G: 24x 10M/100M/1G Ethernet ports with fixed 4x 1G uplink ports.

C9200L-48T-4G: 48x 10M/100M/1G Ethernet ports with fixed 4x 1G uplink ports.

C9200L-24T-4X: 24x 10M/100M/1G Ethernet ports with fixed 4x 10G uplink ports.

C9200L-48T-4X: 48x 10M/100M/1G Ethernet ports with fixed 4x 10G uplink ports.

PoE+ switches (each with 1x UADP 2.0 mini ASIC)

C9200L-24P-4G: 24x 10M/100M/1G Ethernet ports with fixed 4x 1G uplink ports — a maximum PoE budget of 740W.

C9200L-48P-4G: 48x 10M/100M/1G Ethernet ports, with fixed 4x 1G uplink ports — a maximum PoE budget of 1440W.

C9200L-24P-4X: 24x 10M/100M/1G Ethernet ports with fixed 4x 10G uplink ports — a maximum PoE budget of 740W.

C9200L-48P-4X: 48x 10M/100M/1G Ethernet ports with fixed 4x 10G uplink ports — a maximum PoE budget of1440W.

Partial PoE+ switches(each with 1x UADP 2.0 mini ASIC)

C9200L-48PL-4G: 48x 10M/100M/1G Ethernet ports with fixed 4x 1G uplink ports — a maximum PoE budget of 370W.

C9200L-48PL-4X: 48x 10M/100M/1G Ethernet ports with fixed 4x 10G uplink ports — a maximum PoE budget of 370W.

Multigigabit Ethernet switches with PoE+ (each with 2x UADP 2.0 mini ASIC)

C9200L-24PXG-4X: 8x 100M/1G/2.5G/5G/10G and 16x 10M/100M/1G Ethernet copper ports with fixed 4x 10G uplink ports — maximum PoE budget of 740W.

C9200L-48PXG-4X: 12x 100M/1G/2.5G/5G/10G and 36x 10M/100M/1G Ethernet copper ports with fixed 4x 10G uplink ports — maximum PoE budget of 1440W.

C9200L-24PXG-2Y: 8x 100M/1G/2.5G/5G/10G and 16x 10M/100M/1G Ethernet copper ports with fixed 2x 25G uplink ports — maximum PoE budget of 740W.

C9200L-48PXG-2Y: 8x 100M/1G/2.5G/5G/10G and 40x 10M/100M/1G Ethernet copper ports with fixed 2x 25G uplink ports — maximum PoE budget of 1440W.

1G switches – C9200 modular uplink models

Data-only switches
(each with 1x UADP 2.0 mini ASIC)

C9200-24T: 24x 10M/100M/1G Ethernet ports with optional uplink modules.

C9200-48T: 48x 10M/100M/1G Ethernet ports with optional uplink modules.

PoE+ switches
(each with 1x UADP 2.0 mini ASIC)

C9200-24P: 24x 10M/100M/1G Ethernet ports with optional uplink modules — maximum PoE budget of 740W.

C9200-48P: 48x 10M/100M/1G Ethernet ports with optional uplink modules — maximum PoE budget of 1440W.

C9200-24PB: 24x 10M/100M/1G Ethernet ports, enhanced VRF, with optional uplink modules — maximum PoE budget of 740W.

C9200-48PB: 48x 10M/100M/1G Ethernet ports, enhanced VRF, with optional uplink modules — maximum PoE budget of 1440W.

Partial PoE+ switches(each with 1x UADP 2.0 mini ASIC)

C9200-48PL: 48x 10M/100M/1G Ethernet ports with optional uplink modules — maximum PoE budget of 370W.

Multigigabit Ethernet switches with PoE+
(each with 2x UADP 2.0 mini ASIC)

C9200-24PXG: 8x 100M/1G/2.5G/5G/10G and 16x 10M/100M/1G Ethernet copper ports with optional uplink modular — maximum PoE budget of 740W.

C9200L-48PXG-4X: 8x 100M/1G/2.5G/5G/10G and 40x 10M/100M/1G Ethernet copper ports with optional uplink modular — maximum PoE budget of 1440W.x

This section briefly covers the high-level system design of the Cisco Catalyst 9200 Series. It is a very simple and flexible architecture, with the option to combine up to eight physical switches as one logical switch using Cisco StackWise-160 technology for modular SKUs and StackWise-80 technology for fixed SKUs.

C9200-24P board layout

Cisco Catalyst 9200 Series switches come with two field-replaceable Power Supply Unit (PSU) slots and support AC power inputs. There are two redundant variable-speed fans in the back of the switch. All Catalyst 9200 Series models come with a built-in passive RFID for inventory management, a Blue Beacon LED for device-level identification, and a tricolor LED for system status.

These switches also include two StackWise-160 (for C9200 modular SKUs) and two StackWise-80 (for C9200L fixed SKUs) ports, an RJ-45 console port, and a 1G management port. The front of the switch has a USB Type B connector for connecting a console to the switch and two USB 2.0 slots.

Cisco Catalyst 9200 Series switches support up to two 125W, 600W, or 1000W AC PSUs. The 600W and 1000W PSUs are rated as Platinum efficient for greater than 90 percent power efficiency at 100 percent load. The 125W PSU is rated as Silver efficient for greater than 80 percent power efficiency at 100 percent load. The system supports either one PSU operating in standalone mode, which is sufficient to power the switch in its maximum configuration, or two PSUs operating in redundant load-sharing mode for PoE+ SKUs. In the data-only SKUs, the system supports either one PSU operating in standalone mode or two PSUs operating in redundant mode.

Power supply slot

The maximum output power per power supply for the Cisco Catalyst 9200 Series is listed below. Each PSU has a power holdup time of approximately 20 milliseconds at 100 percent load. Each comes with front-to-back variable speed cooling fans and has a push-release lock for simple and secure Online Insertion and Removal (OIR).

● The 1000W AC PSU has maximum output of 1000W at 110V to 220V input.

● The 600W AC PSU has maximum output of 600W at 110V to 220V input.

● The 125W AC PSU has maximum output of 125W at 110V to 220V input.

Power supply unit

Each PSU supports a bicolor (green/red) LED to show the status of the power supply.

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Cisco Catalyst 9200 Series Switches Hardware Installation Guide

Bias-Free Language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

Book Title

Cisco Catalyst 9200 Series Switches Hardware Installation Guide

Installing the Switch

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Chapter: Installing the Switch

Installing the Switch

Preparing for Installation

Safety Warnings

This section includes the basic installation caution and warning statements. Read this section before you start the installation procedure. Translations of the warning statements appear in the Regulatory Compliance and Safety Information guide on Cisco.com.

Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. Statement 43

Warning

Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage. Statement 48

Warning

Ethernet cables must be shielded when used in a central office environment. Statement 171

Warning

Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001

Warning

Read the installation instructions before connecting the system to the power source. Statement 1004

Warning

Class 1 laser product. Statement 1008

Warning

This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017

Warning

The plug-socket combination must be accessible at all times, because it serves as the main disconnecting device. Statement 1019

Warning

Use copper conductors only. Statement 1025

Warning

This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028

Warning

Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030

Warning

Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040

Warning

To prevent the system from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of:

Warning

Installation of the equipment must comply with local and national electrical codes. Statement 1074

Warning

To prevent airflow restriction, allow clearance around the ventilation openings to be at least: 3 inches (7.6 cm). Statement 1076

Installation Guidelines

When determining where to install the switch, verify that these guidelines are met:

Clearance to the switch front and rear panel meets these conditions:

Front-panel LEDs can be easily read.

Access to ports is sufficient for unrestricted cabling.

AC power cord can reach from the AC power outlet to the connector on the switch rear panel.

The SFP/SFP+ module minimum bend radius and connector length is met. See the SFP/SFP+ module documentation for more information.

Cabling is away from sources of electrical noise, such as radios, power lines, and fluorescent lighting fixtures. Make sure that the cabling is safely away from other devices that might damage the cables.

Make sure power-supply modules and fan modules are securely inserted in the chassis before moving the switch.

Airflow around the switch and through the vents is unrestricted.

For copper connections on Ethernet ports, cable lengths from the switch to connected devices can be up to 328 feet (100 meters).

Temperature around the unit does not exceed 113°F (45°C). If the switch is installed in a closed or multirack assembly, the temperature around it might be greater than normal room temperature.

Humidity around the switch does not exceed 95 percent.

Altitude at the installation site is not greater than 10,000 feet.

Cooling mechanisms, such as fans and blowers in the switch, can draw dust and other particles causing contaminant buildup inside the chassis, which can result in system malfunction. You must install this equipment in an environment as free from dust and foreign conductive material (such as metal flakes from construction activities) as is possible.

Warning

The illustrations used in this section shows a C9200L switch. The C9200 switch installation is similar to C9200L, follow the same steps for installing C9200 switches.

Shipping Box Contents

The shipping box contains the model of the switch you ordered and other components needed for installation. Some components are optional, depending on your order.

Note

Verify that you have received these items. If any item is missing or damaged, contact your Cisco representative or reseller for instructions. Verify that you have received these items. If any item is missing or damaged, contact your Cisco representative or reseller for instructions.

Note

Figure 1. Components delivered in the shipping box

Cisco Catalyst 9200 Series switch 1 (power supply modules are not displayed)

M4.0 x 20mm Phillips pan-head screw

Four rubber mounting feet

RJ-45 USB console cable 1

Two 19-inch mounting brackets

(Optional) USB console cable 1

4 number-12 pan-head screw

(Optional) StackWise cable 1 (0.5-meter, 1-meter, or 3-meter)

4 number-10 pan-head screws

Power cord retainer

8 number-8 Phillips flat-head screws

Item is orderable.

Tools and Equipment

Obtain these necessary tools:

A Number-2 Phillips screwdriver.

Verifying Switch Operation

Before you install the switch in a rack or on a table or shelf, power on the switch and verify that it passes POST.

To power on the switch, plug one end of the AC power cord into the switch AC power connector, and plug the other end into an AC power outlet.

As the switch powers on, it begins the POST, a series of tests that runs automatically to ensure that the switch functions properly. LEDs can blink during the test. POST lasts approximately 1 minute. The SYST LED blinks green, and the other LEDs remain solid green.

When the switch completes POST successfully, the SYST LED remains green. The LEDs turn off and then reflect the switch operating status. If a switch fails POST, the SYST LED turns amber.

POST failures are usually fatal. Call Cisco technical support representative if your switch fails POST.

After a successful POST, unplug the power cord from the switch and install the switch in a rack, on a table, or on a shelf.

Planning a Switch Data Stack

Switch Stacking Guidelines

A StackWise adapter must be installed in the stacking port to enable stacking. The StackWise cable connects to the StackWise adapter in the stacking port. If the switch is not ordered with stacking, the adapters must be ordered separately and installed.

Before connecting the switches in a stack, observe these stacking guidelines:

Number of switches in the stack. You can create data stacks with up to eight switches in a stack.

Length of the cable. Order the appropriate cable from your Cisco sales representative. The length of the cable depends on your configuration. These are the different sizes available:

0.5 meter cable (STACK-T4-50CM)

1 meter cable (STACK-T4-1M)

3 meter cable (STACK-T4-3M)

Minimum bend radius and coiled diameter for StackWise cables. We recommend a minimum bend radius and coiled diameter for each StackWise cable.

Table 1. StackWise Cables Minimum Bend Radius and Coiled Diameter

Cable Part Number

Minimum Bend Radius

Minimum Coiled Diameter

Power supply module

StackWise 3.0 m cable

Power cord retainer

StackWise 1.0 m and 0.5 m cable

Ensure that you maintain a proper clearance of 5.5 in. and 4.5 in. between the StackWise cable and the switch as depicted in the image.

Data Stack Cabling Configurations

This is an example of a recommended configuration that uses the supplied 0.5-meter StackWise cable. In this example, the switches are stacked in a vertical rack or on a table. This configuration provides redundant connections. The configuration example uses the supplied 0.5-meter StackWise cable. The example shows the full-ring configuration that provides redundant connections.

Figure 2. Data Stacking the Switches in a Rack or on a Table Using the 0.5-meter StackWise Cables

This example shows a recommended configuration when the switches are mounted side-by-side. Use the 1-meter and the 3-meter StackWise cables to connect the switches. This configuration provides redundant connections.

Figure 3. Data Stacking in a Side-by-Side Mounting

Data Stack Bandwidth and Partitioning Examples

This section provides examples of data stack bandwidth and possible data stack partitioning. The figure shows a data stack of switches that provides full bandwidth and redundant StackWise cable connections.

Figure 4. Example of a Data Stack with Full Bandwidth Connections

This figure shows an example of a stack of switches with incomplete StackWise cabling connections. This stack provides only half bandwidth and does not have redundant connections.

Figure 5. Example of a Data Stack with Half Bandwidth Connections

The figures below show data stacks of switches with failover conditions. In this figure, the StackWise cable is bad in link 2. Therefore, this stack provides only half bandwidth and does not have redundant connections.

Figure 6. Example of a Data Stack with a Failover Condition

In this figure, link 2 is bad. Therefore, this stack partitions into two stacks, and the top and bottom switches become the active switch in the stack. If the bottom switch is a member (not active or standby switch), it reloads.

Figure 7. Example of a Partitioned Data Stack with a Failover Condition

Power-On Sequence for Switch Stacks

Consider these guidelines before you power on the switches in a stack:

The sequence in which the switches are first powered on might affect the switch that becomes the stack master.

There are two ways to elect an active switch:

If you want a particular switch to become the active switch, configure it with the highest priority. Among switches with same priority, the switch with the lowest MAC address becomes the active switch.

If you want a particular switch to become the active switch, power on that switch first. This switch remains the active switch until a reelection is required. After 2 minutes, power on the other switches in the stack. If you have no preference as to which switch becomes the active switch, power on all the switches in the stack within 1 minute. These switches participate in the active switch election. Switches powered on after 2 minutes do not participate in the election.

Power off a switch before you add it to or remove it from an existing switch stack. If changes are made to the stack without powering down the switches, the following results can occur:

If two operating partial ring stacks are connected together using a stack cable, a stack merge can take place. This situation reloads the whole stack (all switches in the stack).

If some switches in the stack are completely separated from the stack, a stack split can occur.

A stack split can occur on a full ring stack if:

More than one running switch is removed without powering down.

More than one stack cable is removed without powering down.

A stack split can occur in a partial ring stack if:

A switch is removed without powering down.

A stack cable is removed without powering down.

In a split stack, depending on where the active and standby switches are located, either two stacks might be formed (with the standby taking over as the new active switch in the newly formed stack) or all the members in the newly formed stack might reload.

Note

Note	These results depend on how the switches are connected. You can remove two or more switches from the stack without splitting the stack.

For conditions that can cause a stack reelection or to manually elect the active switch, see the stacking software configuration guide Stack Manager and High Availability Configuration Guide for Cisco Catalyst 9200 Series Switches on Cisco.com.

Mounting the Switch

Rack-Mounting

Installation in racks other than 19-inch racks requires a bracket kit not included with the switch.

Warning

To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety: This unit should be mounted at the bottom of the rack if it is the only unit in the rack. When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack. If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack. Statement 1006

Figure 8. Rack-Mounting Brackets. This figure shows the standard 19-inch brackets and other optional mounting brackets. You can order the optional brackets (ACC-KIT-T1=) from your Cisco sales representative.

19-inch brackets (ACC-KIT-T1=)

23-inch brackets (RACK-KIT-T1=)

ETSI brackets (RACK-KIT-T1=)

24-inch brackets (RACK-KIT-T1=)

Attaching the Rack-Mount Brackets

Before you begin

Procedure

Use two Phillips flat-head screws to attach the long side of the bracket to each side of the switch for the front- or rear-mounting positions.

The following illustration shows a C9200L switch. C9200 switches follow the same method for installing the rack mount bracket.

Figure 9. Attaching Brackets for 19-inch Racks in a two-post rack front-mount position

Figure 10. Attaching Brackets for 19-inch Racks in a two-post rack rear-mount position

Number-8 Phillips flat-head screws

Mounting the Switch in a Rack

Procedure

Use the four supplied Phillips machine screws to attach the brackets to the rack.

Use the black Phillips machine screw to attach the cable guide to the left or right bracket.

Figure 11. Mounting the Switch in a Rack

Phillips machine screw, black

Number-12 or number-10 Phillips machine screws

Installing the Switch on a Table or Shelf

Procedure

To install the switch on a table or shelf, locate the adhesive strip with the rubber feet in the mounting-kit envelope.

Attach the four rubber feet to the four circular etches on the bottom of the chassis.

Figure 12. Attaching the mounting feet for Table-Mounting or Shelf-Mounting

Rubber mounting feet

Place the switch on the table or shelf near an AC power source.

What to do next

After Switch Installation

Configure the switch using the Web User Interface. For more information, see «Configuring the Switch Using the Web User Interface» topic in the Software Configuration Guide .

Connect the required devices to the switch ports.

Turn on the power supply switches to power up the system. While powering up, the switch performs a series of bootup diagnostic tests.

The switch is designed to boot up in less than 30 minutes, provided that the neighboring devices are in fully operational state.

Verify port connectivity after connecting devices to the switch ports. The LED turns green when the switch and the attached device have a link.

Connecting to the StackWise Ports

Before you begin

Before connecting the StackWise cables, read the «Planning a Switch Data Stack» section. Always use a Cisco-approved StackWise cable to connect the switches.

Procedure

Remove the dust covers from the StackWise cables and StackWise ports, and store them for future use.

A StackWise adapter must be installed in the StackWise port to enable stacking. In the default setup, the StackWise adapter blanks are installed in the StackWise ports. If StackWise stacking is ordered with the switch, StackWise adapters are already installed in the StackWise ports, and you can proceed to step 4.

Remove the StackWise adapter blanks from each destination StackWise port using the Torx T15 Allen key provided in the stacking kit (or a Torx T15 screwdriver). Store them for future use.

Install a StackWise adapter in each destination StackWise port, and secure it in place using the supplied Torx T15 key, or a Torx T15 screwdriver.

Figure 13. Installing the StackWise Adapter in a StackWise Port

Note

Connect the cable to the StackWise port on the switch rear panel.

Align the StackWise cable connector with the StackWise adapter in the StackWise port.

Insert the StackWise cable connector into the StackWise port. Make sure that the Cisco logo is on the top side of the connector.

Figure 14. Connecting the StackWise Cable in a StackWise Port

Finger-tighten the screws in clockwise direction.

Connect the other end of the cable to the port on the other switch and finger-tighten the screws. Avoid over-tightening the screws.

Caution

Removing and installing the StackWise cable can shorten its useful life. Do not remove and insert the cable more often than is absolutely necessary (installing and removing it up to 200 times is supported).

When you need to remove the StackWise cable from the connector, make sure to fully unscrew the correct screws. When the connectors are not being used, replace the dust covers.

Connecting Devices to the Ethernet Ports

10/100/1000/Multigigabit Ethernet Port Connections

The switch 10/100/1000 and Multigigabit Ethernet port configuration changes to operate at the speed of the attached device. If the attached ports do not support autonegotiation, you can manually set the speed and duplex parameters. Connecting devices that do not autonegotiate or that have the speed and duplex parameters manually set can reduce performance or result in no linkage.

To maximize performance, choose one of these methods for configuring the Ethernet ports:

Let the ports autonegotiate both speed and duplex.

Set the interface speed and duplex parameters on both ends of the connection.

Auto-MDIX Connections

The autonegotiation and the auto-MDIX features are enabled by default on the switch.

With autonegotiation, the switch port configurations change to operate at the speed of the attached device. If the attached device does not support autonegotiation, you can manually set the switch interface speed and duplex parameters.

With auto-MDIX, the switch detects the required cable type for copper Ethernet connections and configures the interface accordingly.

If auto-MDIX is disabled, use the guidelines in this table to select the correct cable.

Table 2. Recommended Ethernet Cables (When Auto-MDIX is Disabled)

Switch to switch

Switch to computer or server

Switch to router

Switch to IP phone

1 100BASE-TX and 1000BASE-T traffic requires twisted four-pair, Category 5 or higher. 10BASE-T traffic can use Category 3 cable or higher.

PoE and POE+ Port Connections

The 10/100/1000 PoE and PoE+ ports have the same autonegotiation settings and cabling requirements that are described in the 10/100/1000 Ports. These ports can provide PoE and PoE+ inline power.

PoE inline power supports devices compliant with the IEEE 802.3af standard, as well as prestandard Cisco IP Phones and Cisco Aironet Access Points. Each port can deliver up to 15.4 W of PoE. PoE+ inline power supports devices compliant with the IEEE 802.3at standard, by delivering up to 30 W of PoE+ power per port to all switch ports.

See Power Supply Modules for the power supply modules required to support PoE and PoE+ on 24- and 48-port switches.

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