Can C9300-48UN-E be stacked?

Yes, C9300-48UN-E stacks over StackWise-480, which lifts switching capacity from 640 Gbps standalone to 1120 Gbps. StackPower is supported as well, and the default order includes a 50 cm StackWise cable that C9300-STACK-NONE removes.

What does Network Essentials on C9300-48UN-E include?

Network Essentials on C9300-48UN-E covers Layer 2, routed access with OSPF up to 1,000 routes, 802.1X and MACsec-128. VRF, VXLAN and MPLS are not included, and the subscription term must be an Essentials term such as C9300-DNX-E-48-3Y.

What is the peak power draw of C9300-48UN-E at full PoE load?

C9300-48UN-E draws a peak of 875.1W at 100% PoE load on 115VAC with a C9300-NM-8X installed. The datasheet lists this test configuration only, so size the supply and the branch circuit from this figure, per the Catalyst 9300 datasheet power consumption table.

Does C9300-48UN-E keep PoE running during a reload?

Yes, with Perpetual PoE. It holds power to the powered devices through a soft reload such as an upgrade, a crash or a manual reboot, and across a stack. It does not cover power loss. Fast PoE restores power in under 30 seconds from stored power and requires the perpetual-poe-ha setting on the port.

What happens when a 90W Type 4 device connects to a UPOE port on C9300-48UN-E?

The device is demoted to Type 3 operation, because the port is an 802.3bt Type 3 source with 60W at the port. A Class 6 device then receives 51W after cable loss. Per the Catalyst 9300 datasheet, 90W delivery requires a UPOE+ port, which this switch does not have.

Is ThousandEyes bundled with a C9300-DNX-E-48-5Y Essentials term for C9300-48UN-E?

No. TE-EMBEDDED-T, the ThousandEyes Network and Application Synthetics license, is included only with 3-, 5- or 7-year Advantage subscriptions on the Catalyst 9300. An Essentials term for C9300-48UN-E does not carry it, and the license term cannot be added to the switch order.

Can C9300-48UN-E sit in a stack with Catalyst 9300X switches?

Yes. A mixed stack of C9300-48UN-E and Catalyst 9300X members runs StackWise-480 at 480 Gbps. All members must run the same IOS XE release and the same license tier, and a stack holds up to 8 members. Per the Catalyst 9300 datasheet, StackWise-1T applies only to 9300X-only stacks.

What can be plugged into the USB ports of C9300-48UN-E?

The front USB Type A port is USB 3.0 at 5V and 900 mA and accepts Cisco USB flash drives. A USB mini-Type B console port sits beside the RJ-45 console. The rear panel has a USB 3.0 SSD slot for a 120/240 GB module, which you install for app hosting storage.

How is the 480 Gbps StackWise-480 bandwidth of C9300-48UN-E built?

StackWise-480 uses 6 rings of 40 Gbps each, which add up to the 480 Gbps stack bandwidth. A stack holds up to 8 members. Every member must run the same license tier, so Network Essentials and Network Advantage switches cannot share a stack. Per the Catalyst 9300 datasheet, plan the ring cabling with that limit in mind.

C9300-48UN-E – 48x5G mGig UPOE Ports – Modular Uplink – 645W PoE Budget

Name: C9300-48UN-E - Cisco 48-Port 5G mGig UPOE Catalyst 9300 Switch
Brand: Cisco
SKU: C9300-48UN-E
Price: 6714.25 USD
Availability: InStock
Rating: 4.92 (13 reviews)

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Model: C9300-48UN-E

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Rated 4.92 out of 5 based on 13 customer ratings

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C9300-48UN-E Description

The C9300-48UN-E is a Cisco Catalyst 9300 Series stackable access switch for wiring closets that serve Wi-Fi access points over 5G multigigabit copper. The switch has 48 100M/1G/2.5G/5G Cisco UPOE ports, a 645W default PoE budget, a modular uplink slot and 640 Gbps of switching capacity. The -E suffix carries Network Essentials, which covers Layer 2 and OSPF routing up to 1,000 routes but not VRF or VXLAN.

Quick Specs

Parameter	Specification
Product ID	C9300-48UN-E
Product type	Stackable access switch with modular uplinks
Downlink ports	48 x 100M/1G/2.5G/5G multigigabit Cisco UPOE copper ports
Uplink architecture	Modular uplink slot for Cisco Catalyst 9300 network modules
Network license	Network Essentials
Cisco software subscription	Essentials 3-year, 5-year, or 7-year term license
Default power supply	PWR-C1-1100WAC-P
Default PoE budget	645W
Stacking and StackPower	StackWise-480 with StackPower support
Expanded PoE budget	1745W with supported secondary power supply configuration
Minimum software release	Cisco IOS XE Fuji 16.8.1a introduced this switch
Switching and forwarding	640 Gbps standalone switching; 476.19 Mpps standalone forwarding

Product Performance

All-Port 5G mGig Access

Default PoE Budget

Standalone Switching Capacity

Key Features

All-Port 5G Multigigabit Access

All 48 copper ports negotiate 100M, 1G, 2.5G or 5G, so a closet of Wi-Fi access points and workstations runs at multigigabit speed on every drop with no separate 10G tier.

645W Default PoE Budget

The default 1100W AC supply leaves 645W for powered devices. A 350W, 715W, 1100W or 1900W secondary supply raises that to 995W, 1360W, 1745W or 2545W.

Cisco UPOE Up To 60W Per Port

UPOE ports power Type 1, Type 2 and Type 3 devices as well as Cisco UPOE devices drawing up to 60W, which covers access points with multiple radios and PoE-fed edge devices.

Modular Uplink Slot

The slot takes C9300-NM-4G, C9300-NM-8X, C9300-NM-2Q, C9300-NM-2Y or C9300-NM-4M network modules, and the switch runs only with a network module or a blank module installed. Uplink speed and media are set by the module rather than the switch.

StackWise-480 And StackPower

StackWise-480 gives 480 Gbps of stack bandwidth and lifts switching capacity from 640 Gbps standalone to 1120 Gbps. StackPower lets members share power supplies as a pool.

Network Essentials Feature Set

The built-in Network Essentials license covers Layer 2, routed access with OSPF up to 1,000 routes, 802.1X and MACsec-128. Features such as VRF, VXLAN and MPLS are part of Network Advantage.

Application Scenarios

Wi-Fi Access Closet On 5G Copper

In a floor wiring closet, the switch connects access points and workstations at up to 5G on every port and powers them over Cisco UPOE, then carries their traffic to the distribution layer through the uplink module.

Campus Building Access Stack

A campus building can combine several of these switches into one StackWise-480 stack, with StackPower sharing power supplies across the members and one management plane for the closet.

Branch Office Access Layer

At a branch office, one switch supplies PoE to phones, cameras and access points and uses its Network Essentials routed access to reach the site router or WAN edge.

Product Comparison

Parameter	C9300-48UN-E	C9300-48UN-A	C9300-48UXM-E	C9300-24UX-E
Total 10/100/1000, Multigigabit copper or SFP fiber	48x 5G Multigigabit (5G/2.5G/1G/100M), Cisco UPOE	48x 5G Multigigabit (5G/2.5G/1G/100M), Cisco UPOE	36x 100M/1G/2.5G + 12x Multigigabit (10G/5G/2.5G/1G/100M), Cisco UPOE	24x Multigigabit (10G/5G/2.5G/1G/100M), Cisco UPOE
Uplink configuration	Modular uplinks	Modular uplinks	Modular uplinks	Modular uplinks
Network stack license	Network Essentials	Network Advantage	Network Essentials	Network Essentials
Available PoE power, default power supply	645W	645W	490W	560W
Available PoE power with 1900W secondary PS	2545W	2545W	2390W	1440W
Stacking bandwidth support	StackWise-480, 480 Gbps	StackWise-480, 480 Gbps	StackWise-480, 480 Gbps	StackWise-480, 480 Gbps
Switching capacity	640 Gbps	640 Gbps	580 Gbps	640 Gbps
Switching capacity with stacking	1,120 Gbps	1,120 Gbps	1,060 Gbps	1,120 Gbps

C9300-48UN-E puts 5G multigigabit UPOE on all 48 copper ports with a 645W default PoE budget, while C9300-48UXM-E splits the same 48 ports into 36 at 2.5G and 12 at 10G with 490W, which suits closets that have only a few 10G access points. Closets that need 10G on every port, at 24 ports and 560W, take C9300-24UX-E. C9300-48UN-E carries Network Essentials, which covers Layer 2 and OSPF up to 1,000 routes; VRF, VXLAN or unlimited OSPF scale calls for C9300-48UN-A, or an installed switch can be upgraded later with a C9300-LIC= term (C9300-48-E-A-3, -5 or -7), which cannot be placed on the switch order.

PoE Power Planning

Planning Item	Cisco Confirmed Value	Order Impact
Default PoE budget	C9300-48UN-E is listed with 645W available PoE and PWR-C1-1100WAC-P as the default supply	Check endpoint power demand before assuming the default supply set is enough
Secondary supply options	The current data sheet lists 995W with a 350W secondary supply, 1360W with a 715W secondary supply, and 1745W with an 1100W secondary supply	Add the secondary supply that matches the powered-device plan and redundancy requirement
UPOE port class	Cisco UPOE ports support Type 1, Type 2, Type 3, and Cisco UPOE powered devices up to 60W per port	Prevents accidental replacement with data-only, PoE+, UPOE+, or 1G-only access models
StackPower design	Catalyst 9300 modular-uplink switches support StackPower	Include StackPower cabling only where the access stack design uses shared power

Ordering Checklist

Subscription term: Order a 48-port Essentials term: C9300-DNX-E-48-3Y, -5Y or -7Y. The configurator defaults to Cisco DNA Advantage for 5 years, so Essentials hardware needs its tier set by hand.
Uplink module: C9300-NM-8X is selected by default; pick another C9300 network module or C9300-NM-NONE. The modular uplink slot ships with the default module unless it is changed or removed.
Second power supply: A second supply identical to the primary is selected by default and C9300-SPS-NONE removes it. Without it the switch runs on one supply and the PoE budget is the single-supply default.
Stack cables: A 50 cm StackWise cable (C9300-STACK-NONE removes it) and a 30 cm StackPower cable (C9300-SPWR-NONE removes it) are included by default. Stacks that span racks need longer cables, and stand-alone switches need neither.
Power cords: Order two cords for the destination country. The configurator defaults to North America cords.

Optional Add-ons

Model	Description
C9300-NM-4G	Catalyst 9300 4 x 1GE SFP network module
C9300-NM-8X	Catalyst 9300 8 x 10G/1G SFP+ network module
C9300-NM-2Q	Catalyst 9300 2 x 40GE QSFP network module
C9300-NM-2Y	Catalyst 9300 2 x 25G/10G/1G SFP28 network module
C9300-NM-4M	Catalyst 9300 4 x 10G/mGig copper network module
NM-BLANK-T1=	Cisco Catalyst Type 1 network module blank spare
C9300-DNX-E-48-3Y	C9300 Cisco Catalyst Essentials 48-port 3-year term license
C9300-DNX-E-48-5Y	C9300 Cisco Catalyst Essentials 48-port 5-year term license
C9300-DNX-E-48-7Y	C9300 Cisco Catalyst Essentials 48-port 7-year term license
PWR-C1-1100WAC-P	1100W AC Platinum-rated power supply module
PWR-C1-1900WAC-P	1900W AC Platinum-rated power supply module upgrade option
STACK-T1-50CM=	Cisco StackWise-480/1T 50 cm stacking cable spare
STACK-T1-1M=	Cisco StackWise-480/1T 1 m stacking cable spare
STACK-T1-3M=	Cisco StackWise-480/1T 3 m stacking cable spare
CAB-SPWR-30CM=	Cisco Catalyst StackPower cable 30 cm spare
CAB-SPWR-150CM=	Cisco Catalyst StackPower cable 150 cm spare

Specifications

Parameter	Specification	Parameter	Specification
Product ID	C9300-48UN-E	Product type	Stackable access switch with modular uplinks
Network license	Network Essentials	Downlink ports	48 x 100M/1G/2.5G/5G multigigabit Cisco UPOE copper ports
Uplink architecture	Optional field-replaceable C9300 network module	Default power supply	PWR-C1-1100WAC-P
Default PoE budget	645W	PoE with 350W secondary supply	995W
PoE with 715W secondary supply	1360W	PoE with 1100W secondary supply	1745W
PoE with 1900W secondary supply	2545W	Uplink module selection	C9300-NM-8X default selection, another C9300-NM option, or no-module selection
Supported network modules	C9300-NM-4G, C9300-NM-8X, C9300-NM-2Q, C9300-NM-2Y, C9300-NM-4M	Cisco software subscription	Essentials 3-year, 5-year, or 7-year term license
Stacking architecture	StackWise-480	Stack bandwidth	480 Gbps
StackPower	Supported	Minimum software release	Cisco IOS XE Fuji 16.8.1a introduced C9300-48UN models
Packet buffer	32 MB for Catalyst 9300 48-port Multigigabit models	MAC addresses	32,000
IPv4 routes	32,000 total routes	IPv6 routes	16,000
Multicast routes	8,000	QoS entries	5,120
ACL entries	5,120	DRAM	8 GB
Flash	16 GB	VLAN IDs	4094
Jumbo frames	9198 bytes	Switching capacity	640 Gbps standalone
Switching capacity with stacking	1,120 Gbps	Forwarding rate	476.19 Mpps standalone
Forwarding rate with stacking	833.33 Mpps	Dimensions	1.73 x 17.5 x 22.2 in. (4.4 x 44.5 x 56.4 cm)
Weight	9.09 kg (20.05 lb)	MTBF	198,647 hours
UPOE support	Type 1, Type 2, Type 3, and Cisco UPOE powered devices up to 60W per port

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Questions & Answers

Can C9300-48UN-E be stacked?
Yes, C9300-48UN-E stacks over StackWise-480, which lifts switching capacity from 640 Gbps standalone to 1120 Gbps. StackPower is supported as well, and the default order includes a 50 cm StackWise cable that C9300-STACK-NONE removes.
What does Network Essentials on C9300-48UN-E include?
Network Essentials on C9300-48UN-E covers Layer 2, routed access with OSPF up to 1,000 routes, 802.1X and MACsec-128. VRF, VXLAN and MPLS are not included, and the subscription term must be an Essentials term such as C9300-DNX-E-48-3Y.
What is the peak power draw of C9300-48UN-E at full PoE load?
C9300-48UN-E draws a peak of 875.1W at 100% PoE load on 115VAC with a C9300-NM-8X installed. The datasheet lists this test configuration only, so size the supply and the branch circuit from this figure, per the Catalyst 9300 datasheet power consumption table.
Does C9300-48UN-E keep PoE running during a reload?
Yes, with Perpetual PoE. It holds power to the powered devices through a soft reload such as an upgrade, a crash or a manual reboot, and across a stack. It does not cover power loss. Fast PoE restores power in under 30 seconds from stored power and requires the perpetual-poe-ha setting on the port.
What happens when a 90W Type 4 device connects to a UPOE port on C9300-48UN-E?
The device is demoted to Type 3 operation, because the port is an 802.3bt Type 3 source with 60W at the port. A Class 6 device then receives 51W after cable loss. Per the Catalyst 9300 datasheet, 90W delivery requires a UPOE+ port, which this switch does not have.
Is ThousandEyes bundled with a C9300-DNX-E-48-5Y Essentials term for C9300-48UN-E?
No. TE-EMBEDDED-T, the ThousandEyes Network and Application Synthetics license, is included only with 3-, 5- or 7-year Advantage subscriptions on the Catalyst 9300. An Essentials term for C9300-48UN-E does not carry it, and the license term cannot be added to the switch order.
Can C9300-48UN-E sit in a stack with Catalyst 9300X switches?
Yes. A mixed stack of C9300-48UN-E and Catalyst 9300X members runs StackWise-480 at 480 Gbps. All members must run the same IOS XE release and the same license tier, and a stack holds up to 8 members. Per the Catalyst 9300 datasheet, StackWise-1T applies only to 9300X-only stacks.
What can be plugged into the USB ports of C9300-48UN-E?
The front USB Type A port is USB 3.0 at 5V and 900 mA and accepts Cisco USB flash drives. A USB mini-Type B console port sits beside the RJ-45 console. The rear panel has a USB 3.0 SSD slot for a 120/240 GB module, which you install for app hosting storage.
How is the 480 Gbps StackWise-480 bandwidth of C9300-48UN-E built?
StackWise-480 uses 6 rings of 40 Gbps each, which add up to the 480 Gbps stack bandwidth. A stack holds up to 8 members. Every member must run the same license tier, so Network Essentials and Network Advantage switches cannot share a stack. Per the Catalyst 9300 datasheet, plan the ring cabling with that limit in mind.

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C9300-48UN-E – 48x5G mGig UPOE Ports – Modular Uplink – 645W PoE Budget

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C9300-48UN-E Description

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Ordering Checklist

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Specifications

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Questions & Answers

Can C9300-48UN-E be stacked?

What does Network Essentials on C9300-48UN-E include?

What is the peak power draw of C9300-48UN-E at full PoE load?

Does C9300-48UN-E keep PoE running during a reload?

What happens when a 90W Type 4 device connects to a UPOE port on C9300-48UN-E?

Is ThousandEyes bundled with a C9300-DNX-E-48-5Y Essentials term for C9300-48UN-E?

Can C9300-48UN-E sit in a stack with Catalyst 9300X switches?

What can be plugged into the USB ports of C9300-48UN-E?

How is the 480 Gbps StackWise-480 bandwidth of C9300-48UN-E built?

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