How much power does a device receive from a Cisco UPOE port on C9300-48UB-A?

A 60W UPOE port is an IEEE 802.3bt Type 3 source, so a Class 6 device receives 51W after cable loss. A Type 4 device that asks for 90W is demoted to Type 3 operation on this port. Plan the endpoint power class against the 51W device-side figure, per the Catalyst 9300 datasheet.

Does a C9300-DNA-A-48-5Y term for C9300-48UB-A include ThousandEyes?

Yes. The Advantage term brings the ThousandEyes Network and Application Synthetics license, PID TE-EMBEDDED-T, at no extra charge for the same term as the subscription. This applies to 3-year, 5-year and 7-year terms. Essentials subscriptions do not carry it.

How many C9300-48UB-A switches can share power in a StackPower ring?

Up to four C9300-48UB-A switches can share power in a StackPower ring with 1+N redundancy. An XPS 2200 extends this to eight switches in a star topology. One eight-member data stack can hold two power stacks. Per the Catalyst 9300 datasheet, StackPower runs only on modular-uplink models.

Can C9300-48UB-A use the PWR-C1-1900WAC-P power supply?

Yes. PWR-C1-1900WAC-P is listed as an available supply for modular-uplink Catalyst 9300 models and can be mixed with the other 9300 supplies. It delivers 1500W at 115V input and 1900W at 230V input. It also takes its own power cord, so order that cord with it.

Does C9300-48UB-A 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.

How is the 480 Gbps StackWise-480 bandwidth of C9300-48UB-A 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.

Which power supplies besides PWR-C1-1100WAC-P fit C9300-48UB-A, and what redundancy applies?

Catalyst 9300 chassis take 350W AC, 715W AC, 715W DC, 1100W AC and 1900W AC supplies. Each switch holds two supplies in an N+1 arrangement. All are Platinum-rated at 90% efficiency except the DC unit, which is Gold-rated. Per the Cisco datasheet, the supply PIDs end in -P for the Platinum AC models.

C9300-48UB-A – 48x1G UPOE Ports – Higher-Scale Buffer – 822W PoE Budget

Name: C9300-48UB-A - Cisco Higher-Scale 48-Port UPOE Advantage Switch
Brand: Cisco
SKU: C9300-48UB-A
Price: 7066.00 USD
Availability: InStock
Rating: 4.73 (11 reviews)

Brand: Cisco Category: Catalyst 9300 Switches Availability:

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Model: C9300-48UB-A

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Rated 4.73 out of 5 based on 11 customer ratings

4.711 reviews7 Questions8 sold this month

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C9300-48UB-A Description

The C9300-48UB-A is a Cisco Catalyst 9300 Series higher-scale stackable access switch for wiring closets that power phones and access points over Cisco UPOE. The switch has 48 10/100/1000 UPOE ports, a modular uplink slot, an 822W default PoE budget, a 32 MB packet buffer and 112,000 IPv4 routes. Higher-scale models stack only with other higher-scale members, and the -A suffix carries Network Advantage, which adds BGP, VXLAN, MPLS and MACsec-256.

Quick Specs

Parameter	Specification
Product ID	C9300-48UB-A
Product type	Higher-scale stackable access switch with modular uplinks
Downlink ports	48 x 10/100/1000 Mbps Cisco UPOE copper ports
Scale profile	Catalyst 9300 higher-scale model
Uplink architecture	Modular uplink slot for Cisco Catalyst 9300 network modules
Network license	Network Advantage
Default power supply	PWR-C1-1100WAC-P
Default PoE budget	822W
Stacking and StackPower	StackWise-480 with StackPower support
Expanded PoE budget	1800W with supported secondary power supply configuration
Minimum software release	Cisco IOS XE Gibraltar 16.12.1
Switching and forwarding	256 Gbps standalone switching; 190.48 Mpps standalone forwarding

Product Performance

Higher-Scale UPOE Access Density

Higher-Scale Packet Buffer

Standalone Switching Capacity

Key Features

Higher-Scale Resource Profile

The higher-scale hardware holds 64,000 MAC addresses, 112,000 IPv4 routes and 56,000 IPv6 routing entries, roughly double the MAC table and more than three times the IPv4 route scale of standard Catalyst 9300 modular-uplink models.

32 MB Packet Buffer

The deeper buffer absorbs bursts from uplinks and multicast traffic better than the 16 MB buffer on standard gigabit Catalyst 9300 models.

48 Cisco UPOE Ports

All 48 gigabit copper ports can deliver Cisco UPOE at up to 60W for access points, displays and thin clients.

822W PoE Budget With A Second Supply Option

The default 1100W supply leaves 822W for PoE. A second supply raises the budget to 1800W for closets that fill more ports with high-draw devices.

Network Advantage Included

The -A suffix adds BGP, VXLAN, LISP, Cisco TrustSec, MPLS and MACsec-256 to the Layer 2 and routed access base, with no OSPF route limit.

Stacks Only With Higher-Scale Members

StackWise-480 joins up to eight switches, but every member must be a higher-scale model: C9300-24UB-A, C9300-24UXB-A or C9300-48UB-A.

Application Scenarios

Dense Access With Larger Tables

A campus building with many wireless clients and endpoints can use the switch’s 64,000 MAC address table and 32 MB buffer in a 48-port UPOE closet.

Segmented Access With VXLAN

In a campus fabric that extends segmentation to the access layer, the switch runs VXLAN and Cisco TrustSec under its Network Advantage license.

Higher-Scale Stack Growth

A stack built from higher-scale Catalyst 9300 members can add the switch as another 48-port UPOE member over StackWise-480.

Product Comparison

Parameter	C9300-48UB-A	C9300-48UB-E	C9300-48U-A	C9300-24UB-A
Downlink ports	48 x 10/100/1000 Mbps	48 x 10/100/1000 Mbps	48 x 10/100/1000 Mbps	24 x 10/100/1000 Mbps
PoE type	Cisco UPOE	Cisco UPOE	Cisco UPOE	Cisco UPOE
Available PoE power (default supply)	822W	822W	822W	830W
Maximum PoE power (second supply)	1800W	1800W	1800W	1440W
Network license	Network Advantage	Network Essentials	Network Advantage	Network Advantage
Packet buffer	32 MB	32 MB	16 MB	32 MB
MAC addresses	64,000	64,000	32,000	64,000
IPv4 routes	112,000	112,000	32,000	112,000
Switching capacity	256 Gbps	256 Gbps	256 Gbps	208 Gbps

C9300-48UB-A and C9300-48UB-E share the same 48 UPOE ports, 32 MB packet buffer and 822W default PoE budget; the difference is that C9300-48UB-A runs Network Advantage, which adds VXLAN, Cisco TrustSec, MPLS and MACsec-256. A site that needs only Layer 2 and routed access with OSPF up to 1,000 routes can drop to C9300-48UB-E, giving up those features, and Cisco lists no downgrade path for an installed switch. The scale profile is the second filter: C9300-48U-A has a 16 MB buffer, 32,000 MAC addresses and 32,000 IPv4 routes against 64,000 and 112,000 here, and it cannot be mixed into a higher-scale stack. A closet with only 24 powered devices fits C9300-24UB-A, which has an 830W default budget.

PoE Power Planning

Planning Item	Cisco Confirmed Value	Order Impact
Default PoE budget	C9300-48UB-A is listed with 822W available PoE and PWR-C1-1100WAC-P as the default supply	Size the endpoint power plan against the base budget before adding secondary power
UPOE access profile	C9300-48UB-A is a 48-port 10/100/1000 Mbps Cisco UPOE model	Prevents replacement with data-only, PoE+, UPOE+, or multigigabit order lines unless the access requirement changes
StackPower support	C9300-48UB-A supports StackPower	Include StackPower cables only when the site design uses shared power across compatible Catalyst 9300 stack members
Higher-scale stack group	C9300-48UB-A higher-scale SKUs need other higher-scale stack members	Confirm the stack member plan before using the SKU as a replacement for standard C9300-48U-A hardware

Ordering Checklist

Subscription tier: Order an Advantage term: C9300-DNA-A-48-3Y, -5Y or -7Y. New orders need a subscription of the same tier as the Network Advantage license on the switch.
Uplink module: Keep the default C9300-NM-8X, pick another C9300-NM module, or select C9300-NM-NONE. The uplink slot must hold a module or a blank; C9300X-NM modules do not fit a C9300 chassis.
Second power supply: A second PWR-C1-1100WAC-P is selected by default and C9300-SPS-NONE removes it. Removing it leaves one supply, so there is no power redundancy and no added PoE headroom.
Stack cables: The default 50 cm StackWise cable (C9300-STACK-NONE removes it) and 30 cm StackPower cable (C9300-SPWR-NONE removes it) ship on the order. A stack that needs longer or no cables must change these lines, or the cables ship anyway.
Power cords: Select the cord type for the destination country. The configurator defaults to North America, and two cords ship with the switch.

Optional Add-ons

Model	Description
C9300-NM-4G	Cisco Catalyst 9300 4 x 1GE SFP network module
C9300-NM-8X	Cisco Catalyst 9300 8 x 10GE SFP+ network module
C9300-NM-2Q	Cisco Catalyst 9300 2 x 40G network module
C9300-NM-2Y	Cisco Catalyst 9300 2 x 25G/10G/1G network module
C9300-NM-4M	Cisco Catalyst 9300 4 x 10G/mGig copper network module
STACK-T1-50CM	Data stack 50 cm cable option for C9300 and C9300X SKUs
STACK-T1-1M	Data stack 1 m cable option for C9300 and C9300X SKUs
STACK-T1-3M	Data stack 3 m cable option for C9300 and C9300X SKUs
CAB-SPWR-30CM=	Cisco Catalyst StackPower cable 30 cm spare
CAB-SPWR-150CM=	Cisco Catalyst StackPower cable 150 cm spare
PWR-C1-1100WAC-P=	1100W AC Platinum-rated power supply spare
C9300-DNX-A-48-3Y	C9300 Cisco Catalyst Advantage, 48-port 1G copper, 3-year term license
C9300-DNX-A-48-5Y	C9300 Cisco Catalyst Advantage, 48-port 1G copper, 5-year term license
C9300-DNX-A-48-7Y	C9300 Cisco Catalyst Advantage, 48-port 1G copper, 7-year term license

C9300-48UB-A Switch Rear Panel

The switch rear panel includes StackWise connectors, StackPower or XPS connectors, ports, fan modules, and power supply modules.

1	Ground connectors	7	StackPower connectors
2	USB3.0–SSD port	8	AC OK (input) status LED
3	BEACON LED	9	PS OK (output) status LED
4	CONSOLE (RJ-45 console port)	10	StackWise-480 port connectors
5	MGMT (RJ-45 10/100/1000 management port)	11	Power supply modules
6	Fan modules	–	–

Rear Panel of a Cisco Catalyst 9300 Series Switch

Components Delivered in the Shipping Box

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.

1	Cisco Catalyst 9300 Series switch with optional network module¹ (power supply and fan modules not shown)	9	Eight number-8 Phillips flat-head screws
2	AC power cord	10	Cable guide
3	Product documentation and compliance document	11	M4.0 x 20mm Phillips pan-head screw
4	Four rubber mounting feet	12	(Optional) RJ-45 console cable
5	Ground lug screw and ring terminal	13	(Optional) USB console cable
6	Two 19-inch mounting brackets	14	(Optional) StackWise-480/1T cable (0.5-meter, 1-meter, or 3-meter)
7	Four number-12 pan-head screws	15	(Optional) StackPower cable (0.3-meter or 1.5-meter)
8	Four number-10 pan-head screws	16	(Optional) StackWise-320 cable

Specifications

Parameter	Specification	Parameter	Specification
Product ID	C9300-48UB-A	Product type	Higher-scale stackable access switch with modular uplinks
Network license	Network Advantage	Downlink ports	48 x 10/100/1000 Mbps Cisco UPOE copper ports
Scale profile	Catalyst 9300 higher-scale model	Default power supply	PWR-C1-1100WAC-P
Default PoE budget	822W	Uplink architecture	Optional field-replaceable C9300 network module
Network module included	Default switch configuration does not include the network module	Supported network modules	C9300-NM-4G, C9300-NM-8X, C9300-NM-2Q, C9300-NM-2Y, C9300-NM-4M
Stacking architecture	StackWise-480	Stack members	Higher-scale C9300 models only
Stack bandwidth	480 Gbps	StackPower	Supported
Minimum software release	Cisco IOS XE Gibraltar 16.12.1	Packet buffer	32 MB
Flexible NetFlow entries	128,000 flows for higher-scale Gigabit Ethernet models	MAC addresses	64,000
IPv4 routes	112,000 total routes	IPv6 routes	56,000
Multicast routes	16,000	QoS entries	18,000
ACL entries	18,000	Switching capacity	256 Gbps standalone
Switching capacity with stacking	736 Gbps	Forwarding rate	190.48 Mpps standalone
Forwarding rate with stacking	547.62 Mpps	DRAM	8 GB
Flash	16 GB	VLAN IDs	4094
Jumbo frames	9198 bytes	MTBF	337,170 hours
Dimensions	1.73 x 17.5 x 19.2 in. (4.4 x 44.5 x 48.8 cm)	Weight	7.72 kg (17.03 lb)

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Questions & Answers

How much power does a device receive from a Cisco UPOE port on C9300-48UB-A?
A 60W UPOE port is an IEEE 802.3bt Type 3 source, so a Class 6 device receives 51W after cable loss. A Type 4 device that asks for 90W is demoted to Type 3 operation on this port. Plan the endpoint power class against the 51W device-side figure, per the Catalyst 9300 datasheet.
Does a C9300-DNA-A-48-5Y term for C9300-48UB-A include ThousandEyes?
Yes. The Advantage term brings the ThousandEyes Network and Application Synthetics license, PID TE-EMBEDDED-T, at no extra charge for the same term as the subscription. This applies to 3-year, 5-year and 7-year terms. Essentials subscriptions do not carry it.
How many C9300-48UB-A switches can share power in a StackPower ring?
Up to four C9300-48UB-A switches can share power in a StackPower ring with 1+N redundancy. An XPS 2200 extends this to eight switches in a star topology. One eight-member data stack can hold two power stacks. Per the Catalyst 9300 datasheet, StackPower runs only on modular-uplink models.
Can C9300-48UB-A use the PWR-C1-1900WAC-P power supply?
Yes. PWR-C1-1900WAC-P is listed as an available supply for modular-uplink Catalyst 9300 models and can be mixed with the other 9300 supplies. It delivers 1500W at 115V input and 1900W at 230V input. It also takes its own power cord, so order that cord with it.
Does C9300-48UB-A 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.
How is the 480 Gbps StackWise-480 bandwidth of C9300-48UB-A 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.
Which power supplies besides PWR-C1-1100WAC-P fit C9300-48UB-A, and what redundancy applies?
Catalyst 9300 chassis take 350W AC, 715W AC, 715W DC, 1100W AC and 1900W AC supplies. Each switch holds two supplies in an N+1 arrangement. All are Platinum-rated at 90% efficiency except the DC unit, which is Gold-rated. Per the Cisco datasheet, the supply PIDs end in -P for the Platinum AC models.

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C9300-48UB-A – 48x1G UPOE Ports – Higher-Scale Buffer – 822W PoE Budget

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C9300-48UB-A Description

Quick Specs

Product Performance

Key Features

Application Scenarios

Product Comparison

PoE Power Planning

Ordering Checklist

Optional Add-ons

C9300-48UB-A Switch Rear Panel

Components Delivered in the Shipping Box

Specifications

Get More Information

Quality Certifications

Customer Reviews

Questions & Answers

How much power does a device receive from a Cisco UPOE port on C9300-48UB-A?

Does a C9300-DNA-A-48-5Y term for C9300-48UB-A include ThousandEyes?

How many C9300-48UB-A switches can share power in a StackPower ring?

Can C9300-48UB-A use the PWR-C1-1900WAC-P power supply?

Does C9300-48UB-A keep PoE running during a reload?

How is the 480 Gbps StackWise-480 bandwidth of C9300-48UB-A built?

Which power supplies besides PWR-C1-1100WAC-P fit C9300-48UB-A, and what redundancy applies?

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