IE-3100-18T2C-E – 18x1G Copper Ports – 2x1G Combo Uplinks – Network Essentials

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IE-3100-18T2C-E Description

The IE-3100-18T2C-E is a Cisco Catalyst IE3100 Rugged Series industrial switch for control cabinets that aggregate many Gigabit copper devices. The switch has eighteen 10/100/1000 RJ45 ports, two 1000BASE-T/1000BASE-X combo uplinks and dual DC inputs from 12V to 48V, and it mounts on a DIN rail at -40°C to 75°C in a blower-equipped cabinet. The switch has no PoE, and each combo uplink runs on either its RJ45 or its SFP side.

Quick Specs

Parameter

Specification

Product ID

IE-3100-18T2C-E

Product type

Industrial Ethernet switch

Network license

Network Essentials

Total ports

20 Gigabit Ethernet ports

Copper downlink ports

18 x 10/100/1000 RJ45 ports

Combo uplink ports

2 x 1000BASE-T/1000BASE-X dual-media ports, each using its RJ45 or its SFP side, not both

PoE budget

Not applicable for this non-PoE model

Power input

Dual DC inputs

Nominal input voltage

12V to 48V

Power consumption

36.7 W

Forwarding rate

29.76 Mpps

MTBF

642,050 hours

Product Performance

Gigabit Ethernet Port Count
Forwarding Rate
MAC Address Capacity

Key Features

Eighteen Gigabit Copper Downlinks

The switch has the highest copper density in the IE3100 family, with 20 Gbps of forwarding bandwidth and 29.76 Mpps across 18 RJ45 ports and 2 uplinks.

Combo Uplinks With Selectable Media

Each of the two uplinks is a dual-media port that works as 1000BASE-T copper or as a 1G or 100M SFP. When both sides are connected the SFP side is used by default, and the media type can be set to RJ45.

Data-Only Power Profile

With no PoE load, power consumption is 36.7 W from dual DC inputs of 12V to 48V nominal, and the primary and backup inputs keep the switch running if one feed fails.

Application Scenarios

Dense Machine-Area Cabinets

On a production line, the switch connects PLCs, HMIs, drives and sensors in one DIN-rail cabinet through its eighteen Gigabit copper ports, and none of those devices draws power from the switch.

Copper Or Fiber Cabinet Uplink

A cabinet that hands off to a plant network can use the combo uplinks as RJ45 where copper is already pulled, or as SFP where a rugged fiber run leaves the cabinet.

Utility And Transport Edge Rooms

In a substation or trackside equipment room, the dual DC inputs let the switch run from two independent feeds while the wide temperature range covers unconditioned enclosures.

Product Comparison

Parameter

IE-3100-18T2C-E

IE-3100-18T2C-CC-E

IE-3105-18T2C-E

IE-3100-8T2C-E

Network license

Network Essentials

Network Essentials

Network Essentials

Network Essentials

Downlink ports

18 x 10/100/1000 RJ45

18 x 10/100/1000 RJ45

18 x 10/100/1000 RJ45

8 x 10/100/1000 RJ45

Uplink ports

2 x 1000BASE-T/1000BASE-X combo

2 x 1000BASE-T/1000BASE-X combo

2 x 1000BASE-T/1000BASE-X combo

2 x 1000BASE-T/1000BASE-X combo

Default PoE budget

No PoE

No PoE

No PoE

No PoE

Operating temperature

-40°C to 75°C (blower-equipped cabinet)

-40°C to 75°C (blower-equipped cabinet)

-40°C to 75°C (blower-equipped cabinet)

-40°C to 75°C (blower-equipped cabinet)

Power consumption

36.7 W

36.7 W

36.7 W

17.7 W

Conformal coating

No

Yes

No

No

FPGA data path

No

No

Yes

No

Layer 2 NAT

No

No

Yes

No

IE-3100-18T2C-E and IE-3100-18T2C-CC-E share 18 copper ports, two combo uplinks and 36.7 W consumption, and the only listed difference is conformal coating on IE-3100-18T2C-CC-E, so coated cabinets need that PID. The FPGA data path and Layer 2 NAT on the uplinks exist only on the IE3105 variant, so sites that translate addresses move to IE-3105-18T2C-E. Neither 18-port model has PoE; powered endpoints need IE-3100-8P2C-E, which has eight PoE ports, a 125 W default budget on a 52.5V to 60V input and up to 240 W with a suitable power supply and configuration. A cabinet that needs only eight copper ports can use IE-3100-8T2C-E at 17.7 W.

Ordering Checklist

  • Power supply: Order a separate DIN-rail supply such as PWR-IE50W-AC= or PWR-IE170W-PC-DC=; these are listed with the = spare suffix, not as a default switch item. The switch has no power source of its own and no default supply.
  • SD card: Add SD-IE-1GB= or SD-IE-16GB=; the card is optional and does not ship by default. Without a card there is no stored configuration to restore when a failed switch is replaced.
  • Catalyst Center subscription: Add IE3100-DNA-E-M with a -1Y, -3Y, -5Y, -7Y or -10Y term, only if Catalyst Center Essentials manages the switch. IE3100-DNA-E-M covers up to 24 ports, which fits this 20-port switch; IE3100-DNA-E-L covers up to 12.
  • Rack mounting: Add STK-RACK-DINRAIL=, the 19-inch rack kit for DIN-rail mounting. The rack kit is its own order line, so it is missing unless added.
  • Uplink optics: Choose industrial SFPs on the Optics-to-Device Compatibility Matrix; for utility, rail or marine sites, -40 to +85 C grade. A commercial-temperature SFP can fail in the cabinet’s temperature range.

Optional Add-ons

Model

Description

PWR-IE50W-AC=

Cisco Industrial Ethernet 50 W AC power supply option for IE deployments

PWR-IE50W-AC-L=

Cisco Industrial Ethernet 50 W AC low-profile power supply option

PWR-IE65W-PC-DC=

Cisco Industrial Ethernet 65 W DC power supply option

PWR-IE65W-PC-AC=

Cisco Industrial Ethernet 65 W AC power supply option

GLC-SX-MM-RGD=

Cisco rugged 1000BASE-SX SFP listed for IE3100 SFP support

GLC-LX-SM-RGD=

Cisco rugged 1000BASE-LX/LH SFP listed for IE3100 SFP support

GLC-ZX-SM-RGD=

Cisco rugged 1000BASE-ZX SFP listed for IE3100 SFP support

SD-IE-16GB=

Cisco IE 16 GB SD card option for industrial Ethernet switches

IE-3100-18T2C-E Front Panel Overview

The illustrations in this section provide an overview of the variety of components available on the various switch models in this product family. Not all models are illustrated.

Number

Feature

Number

Feature

1

Dual-media SFP port LEDs

6

Express Setup LED

2

Dual-media copper port LEDs

7

System LED

3

1000BASE-T port LEDs

8

Alarm input LEDs

4

Power connector LED

9

Alarm output LED

5

Management console LED

–

–

Specifications

Parameter Specification Parameter Specification
Product ID IE-3100-18T2C-E Product type Industrial Ethernet switch
Network license Network Essentials Total ports 20 Gigabit Ethernet ports
RJ45 copper downlinks 18 x 10/100/1000 ports Combo uplink ports 2 x 1000BASE-T/1000BASE-X ports; each combo port uses either its RJ45 or its SFP side and counts once
PoE budget Not applicable for this non-PoE model Conformal coating No; conformal coating applies to IE-3100-18T2C-CC-E
FPGA data path No Layer 2 NAT support No; Layer 2 NAT applies to IE-3105-18T2C-E
Power input Dual DC inputs Nominal input voltage 12V to 48V
Absolute input voltage 9.6V to 60V Maximum current at 12V 4.2A
Maximum current at 24V 2.6A Maximum current at 48V 1.3A
Maximum power consumption 36.7 W Forwarding rate 29.76 Mpps
Forwarding bandwidth 20 Gbps DRAM 4 GB
Flash 1.5 GB SD card capacity 1 GB, 4 GB, or 16 GB optional SD card
MAC addresses 8000 VLAN scale 256 VLANs
IGMP multicast groups 512 STP instances 128
IPv4 indirect routes 2000 Console port 1 RS-232 via RJ45 and 1 micro USB
Alarm I/O 2 dry-contact alarm inputs and 1 alarm output Mounting DIN rail
Operating system Cisco IOS XE Operating temperature -40C to 75C in blower-equipped cabinet
Storage temperature -40C to 85C Operating humidity 5% to 95% noncondensing
Operating altitude Up to 15000 ft with no temperature derating Dimensions 5.00 x 4.30 x 5.08 in. / 12.70 x 10.92 x 12.90 cm
Weight 2.8 lb / 1.27 kg Ingress protection IP30
MTBF 642,050 hours Industrial protocol support EtherNet/IP CIP, Modbus, SCADA, GOOSE, and PROFINET MRP
Management Cisco Catalyst Center, WebUI, CLI, SNMP, and open APIs

Quality Certifications

Customer Reviews

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    Albert Lee
    Posted on 12/04/2026
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    5.0

    Their responsiveness during pre-sales matched our internal expectations.

    Raymond Tanaka
    Posted on 17/12/2025
    Verified Buyer
    5.0

    Successful deployment on the first try. Layer23 products earn that result.

    Grace Weber
    Posted on 10/12/2025
    Verified Buyer
    5.0

    Asked for assistance with internal asset tagging. They were happy to help.

    Logistics
    Posted on 10/09/2025
    Verified Buyer
    5.0

    Arrived in the UK quickly. VAT receipt included.

    Peter Parker
    Posted on 18/05/2025
    Verified Buyer
    5.0

    Super fast delivery! You guys are amazing.

Questions & Answers

  • What operating temperature does IE-3100-18T2C-E support?

    IE-3100-18T2C-E operates from -40C to 75C in a blower-equipped cabinet. Uplink SFPs at utility, rail or marine sites should be the -40 to +85 C grade, because a commercial-temperature SFP can fail in the cabinet's temperature range.
  • What input voltage does IE-3100-18T2C-E accept?

    IE-3100-18T2C-E has dual DC inputs with a nominal 12V to 48V and an absolute range of 9.6V to 60V. Maximum power consumption is 36.7 W, and the primary and backup inputs keep the switch running if one feed fails.
  • What maximum input current does IE-3100-18T2C-E draw?

    IE-3100-18T2C-E draws a maximum of 4.2 A across its 12 to 48 VDC input range, per the IE3100 hardware installation guide. Size the DIN-rail supply and the feed wiring for that current when the cabinet runs at the low end of the range.
  • How large and heavy is IE-3100-18T2C-E for DIN-rail cabinet planning?

    IE-3100-18T2C-E measures 5.00 x 4.30 x 5.12 in and weighs 2.8 lb (1.27 kg), per the IE3100 hardware installation guide. Allow that depth behind the DIN rail when laying out a shallow cabinet.
  • How much memory does IE-3100-18T2C-E have?

    IE-3100-18T2C-E has 4 GB of DRAM and 1.5 GB of flash. An optional 1 GB, 4 GB or 16 GB SD card adds storage for configuration backup, so a replacement switch can restore its settings.
  • What altitude can IE-3100-18T2C-E operate at without temperature derating?

    IE-3100-18T2C-E operates up to 15,000 ft with no temperature derating. Humidity can range from 5% to 95% noncondensing, and storage is rated from -40C to 85C.

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DataSheet Downloads

  • IE-3100-18T2C-E Datasheet