C9300-48UXM-E – 36×2.5G + 12x10G mGig – UPOE – 490W PoE Budget

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C9300-48UXM-E Description

The C9300-48UXM-E is a Cisco Catalyst 9300 Series stackable access switch for wiring closets that mix 2.5G endpoints with a smaller group of 10G multigigabit devices. The switch has 36 100M/1G/2.5G ports and 12 Multigigabit ports up to 10G, all with Cisco UPOE, a 490W default PoE budget, a modular uplink slot and 580 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

C9300-48UXM-E

Product type

Stackable access switch with modular uplinks

Downlink ports

36 x 2.5G plus 12 x 10G multigigabit UPOE copper ports

Uplink architecture

Modular uplink slot for Cisco Catalyst 9300 network modules

Network license

Network Essentials

Cisco software subscription

Cisco DNA Essentials 48-port term license options

Default power supply

PWR-C1-1100WAC-P

Default PoE budget

490W

Stacking and StackPower

StackWise-480 with StackPower support

Expanded PoE budget

1590W with supported secondary power supply configuration

Minimum software release

Cisco IOS XE Everest 16.6.2 introduced C9300-48UXM-E and C9300-48UXM-A

Switching and forwarding

580 Gbps standalone switching; 431.54 Mpps standalone forwarding

Physical profile

1.73 x 17.5 x 22.2 in.; 20.5 lb with FAN FRUs and default power supplies

Product Performance

Mixed-Speed Multigigabit Access
Default PoE Budget
Standalone Switching Capacity

Key Features

Mixed 2.5G And 10G Access

Thirty-six ports run 100M, 1G or 2.5G and twelve Multigigabit ports run up to 10G. Dense desktop and camera drops and a smaller group of 10G devices therefore share one chassis.

490W Default PoE Budget

The default 1100W AC supply leaves 490W for powered devices. A 350W, 715W, 1100W or 1900W secondary supply raises that to 840W, 1205W, 1590W or 2390W.

Cisco UPOE Across All 48 Ports

Every port is a Cisco UPOE port, so Type 1, Type 2, Type 3 and UPOE devices drawing up to 60W can connect to any drop in the closet.

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.

StackWise-480 And StackPower

StackWise-480 provides 480 Gbps of stack bandwidth and raises switching capacity from 580 Gbps standalone to 1060 Gbps. StackPower pools the power supplies of the stack members.

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

High-Speed Copper Access Closet

Most drops in a closet like this serve desktops and cameras at 2.5G, while the twelve 10G Multigigabit ports connect higher-speed access points on the same switch.

Routed Access At A Branch

At a branch office, the switch powers phones and access points over UPOE and uses Network Essentials routed access to reach the site router.

Stacked Closet With Shared Power

Several of these switches can join one StackWise-480 stack in a large closet, with StackPower sharing power supplies across the members and the uplink module set per stack.

Product Comparison

Parameter

C9300-48UXM-E

C9300-48UXM-A

C9300-48UN-E

C9300-24UX-E

Total 10/100/1000, Multigigabit copper or SFP fiber

36x 100M/1G/2.5G + 12x Multigigabit (10G/5G/2.5G/1G/100M), Cisco UPOE

36x 100M/1G/2.5G + 12x Multigigabit (10G/5G/2.5G/1G/100M), Cisco UPOE

48x 5G Multigigabit (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

490W

490W

645W

560W

Available PoE power with 1900W secondary PS

2390W

2390W

2545W

1440W

Stacking bandwidth support

StackWise-480, 480 Gbps

StackWise-480, 480 Gbps

StackWise-480, 480 Gbps

StackWise-480, 480 Gbps

Switching capacity

580 Gbps

580 Gbps

640 Gbps

640 Gbps

Switching capacity with stacking

1,060 Gbps

1,060 Gbps

1,120 Gbps

1,120 Gbps

C9300-48UXM-E offers 36 ports at 2.5G and 12 at 10G with a 490W default PoE budget, while C9300-48UN-E gives all 48 ports 5G multigigabit and 645W, which fits closets where every access point or endpoint link runs at 5G. Closets that need 10G on every port, at 24 ports and 560W, take C9300-24UX-E. C9300-48UXM-E carries Network Essentials, which covers Layer 2 and OSPF up to 1,000 routes; VRF, VXLAN or unlimited OSPF scale calls for C9300-48UXM-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

C9300-48UXM-E is listed with 490W available PoE and PWR-C1-1100WAC-P as the default supply

Size the powered endpoint plan against the base budget before assuming secondary power

Secondary supply options

With PWR-C1-1100WAC-P as primary, Cisco lists 840W with a 350W secondary, 1205W with a 715W secondary, 1590W with an 1100W secondary, and 2390W with a 1900W secondary

Add the secondary supply that matches the UPOE endpoint load and redundancy target

1900W upgrade path

With PWR-C1-1900WAC-P as primary, Cisco lists 1290W available PoE before secondary power and up to 2880W with larger secondary supplies

Use the upgrade path only when the power design requires the larger Cisco-listed budget

StackPower support

Catalyst 9300 modular-uplink switches support StackPower

Include StackPower cabling only when shared power is part of the stack design

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 Series 4 x 1G network module

C9300-NM-4M

Catalyst 9300 Series 4 x multigigabit network module

C9300-NM-8X

Catalyst 9300 Series 8 x 10G/1G network module

C9300-NM-2Q

Catalyst 9300 Series 2 x 40G network module

C9300-NM-2Y

Catalyst 9300 Series 2 x 25G/10G/1G network module

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

PWR-C1-1100WAC-P=

1100W AC Platinum-rated power supply spare

PWR-C1-1900WAC-P=

1900W AC Platinum-rated power supply spare

C9300-DNA-E-48-3Y

C9300 Cisco DNA Essentials 48-port 3-year term license

C9300-DNA-E-48-5Y

C9300 Cisco DNA Essentials 48-port 5-year term license

C9300-DNA-E-48-7Y

C9300 Cisco DNA Essentials 48-port 7-year term license

Catalyst C9300 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 C9300-48UXM-E Product type Stackable access switch with modular uplinks
Network license Network Essentials Access port layout 36 x 2.5G plus 12 x 10G multigigabit UPOE copper ports
Uplink architecture Optional field-replaceable C9300 network module Network module selection C9300-NM-8X default selection, another C9300-NM option, or C9300-NM-NONE
Supported network modules C9300-NM-4G, C9300-NM-4M, C9300-NM-8X, C9300-NM-2Q, C9300-NM-2Y Default power supply PWR-C1-1100WAC-P
Default PoE budget 490W PoE with 350W secondary supply 840W
PoE with 715W secondary supply 1205W PoE with 1100W secondary supply 1590W
PoE with 1900W secondary supply 2390W Upgrade power supply PWR-C1-1900WAC-P
PoE with upgrade supply 1290W before secondary power Stacking architecture StackWise-480
Stack bandwidth 480 Gbps StackPower Supported
Minimum software release Cisco IOS XE Everest 16.6.2 introduced C9300-48UXM-E and C9300-48UXM-A 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 580 Gbps standalone
Switching capacity with stacking 1,060 Gbps Forwarding rate 431.54 Mpps standalone
Forwarding rate with stacking 788.69 Mpps Dimensions 1.73 x 17.5 x 22.2 in. (4.4 x 44.5 x 56.4 cm)
Weight 9.34 kg (20.5 lb) MTBF 202,160 hours

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Questions & Answers

  • How fast does Fast PoE restore power on C9300-48UXM-E?

    Fast PoE on C9300-48UXM-E restores power to the powered device in under 30 seconds from stored power, and it needs the perpetual-poe-ha setting on the port. Perpetual PoE covers soft reloads and stacks, but not power loss, front-end processor removal or hibernation. Configure the setting on every UPOE port that feeds access points or phones.
  • Is ThousandEyes bundled with an Essentials term on C9300-48UXM-E?

    No. The ThousandEyes Network and Application Synthetics license, TE-EMBEDDED-T, is included by default only with 3, 5 or 7-year Cisco Catalyst or Cisco DNA Advantage subscriptions on Catalyst 9300 switches. Essentials terms such as C9300-DNX-E-48-5Y do not include it, so a site that wants it on C9300-48UXM-E needs the Advantage tier.
  • What must match between C9300-48UXM-E and the other members of a mixed stack?

    All members need the same IOS XE release and the same license level. Stacks use SSO and NSF with up to 8 members. A stack that mixes C9300-48UXM-E with Catalyst 9300X switches runs at 480G, while StackWise-1T applies to stacks made only of Catalyst 9300X switches.
  • What does the default Access SDM template allow on C9300-48UXM-E?

    The default Access SDM template of a Catalyst 9300 gives C9300-48UXM-E 4094 VLANs, 32,768 unicast MAC addresses and 8,192 indirect routes. It also reserves 5,120 security ACEs and 5,120 QoS ACEs. IPv6 entries take double the space of IPv4 entries, so dual-stack designs reach these limits sooner.
  • Which SSD should be ordered for C9300-48UXM-E?

    C9300-48UXM-E takes an external USB 3.0 SSD in the rear slot, and you order it as SSD-120G or SSD-240G for 120 GB or 240 GB. The Catalyst 9300 family does not split the sizes between models. The front panel adds a USB 3.0 Type A port rated 5V at 900 mA for Cisco USB flash drives.
  • Can the fans of C9300-48UXM-E be replaced in the field?

    Yes. C9300-48UXM-E has three field-replaceable fans with N+1 redundancy, so cooling continues if one fan fails. Airflow runs front-to-rear and side-to-rear. A failed fan module can be swapped while the switch stays in service, which avoids a reload of the stack.
  • What power can a 802.3bt Type 3 device draw on a link to C9300-48UXM-E?

    A Type 3 device draws up to 51W at the device, from 60W at the switch after cable loss. A Type 4 device rated for 90W at the source is demoted to Type 3 limits when it connects to a Type 3 link, so plan endpoint budgets on the 51W device-side figure. Every one of the 12 Multigigabit links follows the same rule.

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DataSheet Downloads

  • C9300-48UXM-E Datasheet

  • Cisco Catalyst 9300 Switch Datasheet