C9300-48UN-A – 48x 5G Multigigabit UPOE Ports – Modular Uplink – 645W PoE Budget

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C9300-48UN-A Description

The C9300-48UN-A is a Cisco Catalyst 9300 Series stackable access switch for wiring closets that serve high-speed wireless access points and multigigabit endpoints over Cisco UPOE. The switch has 48 5G multigigabit UPOE ports, a modular uplink slot, a 645W default PoE budget and 640 Gbps of switching capacity. Up to eight units join a StackWise-480 stack, and the -A suffix carries Network Advantage, which adds BGP, VXLAN, MPLS and MACsec-256.

Quick Specs

Parameter

Specification

Product ID

C9300-48UN-A

Port layout

48x 5G Multigigabit (5G/2.5G/1G/100M) UPOE copper

PoE type

Cisco UPOE

Default PoE budget

645W (single PWR-C1-1100WAC-P supply)

Uplinks

Modular uplink network module slot

Network license

Network Advantage

Switching capacity

640 Gbps standalone, 1,120 Gbps stacked

Forwarding rate

476.19 Mpps standalone, 833.33 Mpps stacked

Stacking

StackWise-480, up to 8 members, StackPower supported

Default power supply

PWR-C1-1100WAC-P (1100W AC)

Minimum software release

Cisco IOS XE Fuji 16.8.1a or later

Product Performance

Switching Capacity
Forwarding Rate
Stacked Switching Capacity

Key Features

All 48 Ports At Up To 5G

Each port negotiates 5G, 2.5G, 1G or 100M on standard copper cabling, so a closet needs no split between multigigabit and gigabit port groups.

Cisco UPOE On Every Port

UPOE delivers up to 60W per port, which covers power-hungry access points and endpoints that exceed PoE+ limits.

645W Default Budget

The default 1100W supply leaves 645W for PoE, enough for about ten ports at the full 60W. A second supply lifts the budget to 2545W.

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.

Modular Uplinks

The uplink slot takes C9300 network modules such as C9300-NM-8X for 10G, C9300-NM-2Y for 25G or C9300-NM-2Q for 40G, and the module can change later without replacing the switch.

StackWise-480 And StackPower

Up to eight switches stack over StackWise-480, and StackPower cables let members share power headroom.

Application Scenarios

Multigigabit Wi-Fi Closet

In a campus closet that feeds multigigabit Wi-Fi access points, every one of the 48 ports links at up to 5G over Cat 5E or better copper while also delivering UPOE.

Power-Hungry Endpoint Floor

A floor of displays, thin clients and IoT gateways that need Cisco UPOE draws from the 645W default budget, with a second supply available for heavier loads.

Segmented Access Stack

A stack of up to eight switches in a campus access layer can carry VXLAN and Cisco TrustSec segmentation to the edge, with StackPower sharing power between members.

Product Comparison

Parameter

C9300-48UN-A

C9300-48UXM-A

C9300-24UX-A

Downlink ports

48 x 5G/2.5G/1G/100M

36 x 2.5G/1G/100M + 12 x 10G/5G/2.5G/1G/100M

24 x 10G/5G/2.5G/1G/100M

PoE type

Cisco UPOE

Cisco UPOE

Cisco UPOE

Available PoE power (default supply)

645W

490W

560W

Maximum PoE power (second supply)

2880W

2880W

1440W

Network license

Network Advantage

Network Advantage

Network Advantage

Stack bandwidth

480 Gbps (StackWise-480)

480 Gbps (StackWise-480)

480 Gbps (StackWise-480)

Switching capacity

640 Gbps

580 Gbps

640 Gbps

Forwarding rate

476.19 Mpps

431.54 Mpps

476.19 Mpps

C9300-48UN-A is the 48-port 5G Multigigabit UPOE model, with every port at up to 5G and a 645W default PoE budget, against C9300-48UXM-A, which has 36 ports at up to 2.5G, 12 Multigigabit ports up to 10G and a 490W budget. A closet that needs 10G on some ports and can run the rest at 2.5G or below fits C9300-48UXM-A. C9300-24UX-A halves the port count to 24 but takes every port to 10G, with a 560W default budget, which suits a few high-speed drops. A site that does not need VXLAN, Cisco TrustSec or MACsec-256 can order C9300-48UN-E and skip Network Advantage.

PoE Power Planning

Planning Item

Value or Check

PoE standard

Cisco UPOE, 60W maximum per port

Default power supply

PWR-C1-1100WAC-P (1100W AC)

Default PoE budget

645W with the single default supply (Cisco datasheet Table 4 value; hardware installation guide shows conflicting 610W and 490W figures for this chassis, treat 645W as authoritative)

Maximum PoE budget

Up to 2545W with an added 1900W second supply (995W, 1360W or 1745W with a 350W, 715W or 1100W second supply); upgrading the primary supply to 1900W raises the budget to 1445W-2880W depending on secondary supply choice

Second supply requirement

Confirm endpoint power draw against the 645W default budget before assuming a second supply is unnecessary

StackPower option

Available on StackWise-480 stacks to share power headroom across member switches

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 / C9300-NM-4M / C9300-NM-8X / C9300-NM-2Q / C9300-NM-2Y

Field-installable Catalyst 9300 uplink network modules confirmed for the C9300-48UN-A modular uplink bay.

PWR-C1-1900WAC-P

Cisco-confirmed second AC power supply option for the C9300-48UN-A power bay, the documented upgrade path from the default PWR-C1-1100WAC-P for extended PoE headroom.

STACK-T1-50CM / STACK-T1-1M / STACK-T1-3M

StackWise-480 data stacking cables (0.5 m / 1 m / 3 m) for stacking additional Catalyst 9300 switches.

FAN-T2=

Field-replaceable fan module spare for the standard three-fan N+1 redundant fan tray.

C9300-48UN-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

cisco-catalyst-9300-switch-shipping-box

Specifications

Parameter Specification Parameter Specification
Product ID C9300-48UN-A Network license Network Advantage
Port layout 48x 5G Multigigabit (5G/2.5G/1G/100M) UPOE copper PoE type Cisco UPOE, 60W maximum per port
Default power supply PWR-C1-1100WAC-P (1100W AC) Default PoE budget 645W with single default supply (Cisco datasheet Table 4)
Maximum PoE budget Up to 2545W with added 1900W second supply; 1445W-2880W after primary supply upgrade to 1900W Power supply slots 2 internal bays, dual redundant supported, ships with 1 supply and a blank module
Switching capacity 640 Gbps standalone, 1,120 Gbps stacked Forwarding rate 476.19 Mpps standalone, 833.33 Mpps stacked
MAC addresses 32,000 entries VLAN IDs 4094
IPv4 routes 32,000 (24,000 direct + 8,000 indirect) IPv6 routes 16,000
SVI total 1000 Jumbo frames 9198 bytes
Stacking StackWise-480, up to 8 members StackPower Supported for shared power redundancy across stack members
Uplinks Modular uplink network module slot (no module included by default) Compatible network modules C9300-NM-4G, C9300-NM-4M, C9300-NM-8X, C9300-NM-2Q, C9300-NM-2Y
Management interfaces 10/100/1000 Ethernet management port, RJ-45 console port, USB mini-Type B console port Copper port connectors RJ-45, 4-pair Cat 5E UTP (1000BASE-T) or Cat 5E/6/6A UTP (Multigigabit-T)
Fan modules 3 field-replaceable fans, N+1 redundant, FAN-T2= spare, MTBF 4,521,330 hours MTBF (chassis) 198,647 hours
Peak power draw (100% PoE, with C9300-NM-8X) 875.1W at 115Vac (standard and Platinum supply tests consistent) Minimum software release Cisco IOS XE Fuji 16.8.1a or later
Operating temperature -5 to 45°C at or below 1500 m; up to 40°C at 3000 m Storage temperature -40 to 70°C
Operating humidity 5 percent to 90 percent, non-condensing Operating altitude Up to 10,000 ft (3000 m) at up to 45°C
Acoustic noise 45 dB LpA typical / 48 dB LpA max with 24 PoE+ ports at full load, AC power (family-level measurement) Dimensions 1.73 x 17.5 x 19.1 in chassis only; 1.73 x 17.5 x 22.2 in with default power supply
Weight 9.09 kg (20.05 lb) Safety certifications UL 60950-1, CAN/CSA-C22.2 No. 60950-1, EN 60950-1, IEC 60950-1, AS/NZS 60950.1, IEEE 802.3
EMC certifications 47 CFR Part 15, EN 300 386, EN 55032 Class A, CISPR 32 Class A, ICES-003 Class A, and related regional EMC standards Environmental compliance RoHS 5
Multigigabit duplex Full duplex only, half duplex not supported

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Questions & Answers

  • Can C9300-48UN-A be stacked?

    Yes, up to eight switches join a StackWise-480 stack. The default order includes a 50 cm StackWise cable, and C9300-STACK-NONE removes it for stacks that need longer cables or none. StackPower is supported for sharing power headroom between members.
  • What does Network Advantage on C9300-48UN-A include?

    Network Advantage on C9300-48UN-A adds BGP, VXLAN, LISP, Cisco TrustSec, MPLS and MACsec-256 to the Layer 2 and routed access base, with no OSPF route limit. The subscription term, such as C9300-DNA-A-48-3Y, must be an Advantage term.
  • How much power does a device receive from a Cisco UPOE port on C9300-48UN-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.
  • How many C9300-48UN-A switches can share power in a StackPower ring?

    Up to four C9300-48UN-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. Order CAB-SPWR-30CM or CAB-SPWR-150CM for the cabling, per the Catalyst 9300 datasheet.
  • Does a C9300-DNA-A-48-5Y term for C9300-48UN-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.
  • Which Cisco Catalyst subscription PIDs match the Network Advantage license of C9300-48UN-A?

    Order a C9300-DNX-A-48 term in 3Y, 5Y or 7Y for a Cisco Catalyst subscription, or the C9300-DNA-A-48 terms for Cisco DNA. The Essentials terms with an E in the PID do not match this Network Advantage hardware, so check the letter before you place the order.
  • How large is the packet buffer on C9300-48UN-A?

    C9300-48UN-A has a 32 MB packet buffer. Per the Catalyst 9300 datasheet, 32 MB applies to the 24-port and 48-port Multigigabit models of the standard Catalyst 9300 group, which includes this model. The buffer is fixed in hardware, so a license change never alters it.
  • What are the input and heat ratings of PWR-C1-1100WAC-P in C9300-48UN-A?

    PWR-C1-1100WAC-P delivers 1100W from an input of 115-240VAC at 47-63Hz through an IEC 320-C16 inlet. Its heat output is about 3750-3800 BTU/hr. You must use these figures when you check the closet cooling plan and the branch circuit, per the Catalyst 9300 hardware installation guide.
  • Can C9300-48UN-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 C9300-48UN-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 many routes and ACL entries does C9300-48UN-A support?

    C9300-48UN-A supports 32,000 IPv4 routes, made up of 24,000 directly connected and 8,000 indirect routes. It also supports 16,000 IPv6 routes, 5,120 ACL entries and 448 routed ports per stack. Size the routed design within these limits, per the Catalyst 9300 datasheet.

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DataSheet Downloads

  • C9300-48UN-A Datasheet

  • Cisco Catalyst 9300 Switch Datasheet