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Cisco Cisco 3945Cisco 3945 K9 ISR 3-Port GbE Enterprise Router 4x EHWIC Security

Excellent Grade · Fully tested · No visible marks
SKU: 71145
4.76
★★★★★
708 reviews
12mo
Warranty
30day
Free returns
40+
Tech-tested checks
✓ Fast AU shipping ✓ Pickup: Springvale VIC
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$175.00 $299.00

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  • Refurbished - 1yr Warranty - Reboot IT

    1yr Warranty

    $50.00 $75.00

Perks you get with every purchase

Warranty
If your item experiences a technical issue, we've got you covered—we'll either repair it or replace it for you!

30 days to change your mind
Feel free to return your item for any reason within the first 30 days of receiving it. It's that easy!

Free express shipping
Enjoy fast, free express shipping on all small items like laptops, tablets, and smartphones!

Customer support
Rest assured, we’ll always respond to you within 1 business day!

Frequently asked questions

What does the warranty cover?

Our warranty covers all hardware faults, but please note it doesn’t cover accidental damage or software issues. However, we’re here to help with technical support for those matters!

What is a refurbished device?

A refurbished device is a pre-owned item that has been restored to meet high-quality standards. At Reboot IT, we adhere to strict quality guidelines, ensuring that our refurbished products are not the same as used or secondhand items. We meticulously clean, test, and assess each device, replacing worn parts with high-quality components.

Unlike used items, which lack guarantees and rely solely on the seller's word regarding condition, refurbished devices come with assurance of quality and reliability.

What payment options are available?

We offer a variety of payment options to make your shopping experience as convenient as possible! You can pay using all major credit cards, Apple Pay, Google Pay, Shop Pay, Afterpay, Zip Pay, and PayPal. If you prefer, we also accept bank deposits and even cash for in-store purchases!

Safe & Secure

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

We ensure secure processing of your payment information and do not retain or have access to your credit card details.

Description

Cisco 3945 ISR — High-Performance Modular Integrated Services Router

The Cisco 3945 Integrated Services Router (ISR G2) is a 2U modular enterprise router featuring 3 × 10/100/1000 GbE WAN ports, 4 × eHWIC slots, 4 × Service Module slots, hardware IPsec VPN, and a high-performance multicore CPU. This unit ships with a C3900-SPE150/K9 Services Performance Engine, 2 × VIC2-2BRI voice interface cards, a VWIC3-1MFT-T1/E1 voice/WAN card, and an SM-D-ES3G-48-P 48-port GbE switch module installed. Backed by a full 12-month Reboot IT warranty. Note: No flash card or Cisco IOS image is included.

Key Benefits

  • 4 Service Module slots: Double the capacity of the 2951 — install high-density WAN, voice, security, and switching modules simultaneously for complex multi-service branch deployments
  • SPE-150 performance engine: The included C3900-SPE150/K9 offloads crypto and processing, enabling higher VPN and routing throughput than base-model ISR G2 platforms
  • Hardware IPsec VPN: Dedicated AES/3DES encryption accelerator handles site-to-site and remote-access VPN tunnels without impacting route processor performance
  • Included voice modules: Ships with 2 × VIC2-2BRI-NT/TE and 1 × VWIC3-1MFT-T1/E1 — ready for ISDN BRI and T1/E1 voice gateway deployment out of the box
  • 48-port GbE switch module: The SM-D-ES3G-48-P provides 48 Gigabit Ethernet switching ports in a single service module slot, eliminating a separate access switch at smaller sites
  • 1 GB DRAM: Higher memory capacity supports larger routing tables, more concurrent VPN tunnels, and memory-intensive IOS feature sets

Performance in Use

The Cisco 3945 aggregates multiple WAN connections (MPLS, Metro Ethernet, broadband), terminates IPsec VPN tunnels, and enforces security policies — all in a single chassis. The SPE-150 engine significantly increases throughput headroom over entry-level ISR G2 configurations, making the 3945 a strong choice for medium-to-large branch offices and multi-service hub sites.

The included SM-D-ES3G-48-P 48-port GbE switch module turns the 3945 into a combined router-plus-switch platform. This reduces rack space and cable complexity at branch sites where a dedicated access switch would otherwise be required, while the multigigabit fabric (MGF) ensures efficient communication between service modules and the route processor.

For unified communications deployments, the installed VIC2-2BRI and VWIC3-1MFT-T1/E1 cards enable PSTN gateway configuration for SIP or H.323 trunks alongside data routing on the same chassis. Network engineers studying for CCIE Enterprise or Voice can use the 3945 as a realistic multi-service lab platform covering routing, VPN, voice gateway, and switching scenarios simultaneously.

Technical Specifications

GbE WAN Ports 3 × 10/100/1000 (1 SFP-capable dual-purpose)
eHWIC Slots 4 × eHWIC (WAN, switching, voice, and wireless cards)
Service Module Slots 4 × Service Module slots
ISM Slot 1 × Internal Services Module slot
Memory 256 MB NAND Flash / 1 GB DRAM
Encryption Hardware IPsec (AES, 3DES) via onboard accelerator
Included Modules C3900-SPE150/K9, 2 × VIC2-2BRI-NT/TE, VWIC3-1MFT-T1/E1, SM-D-ES3G-48-P
USB Ports 2 × USB 2.0 (console + flash storage)
Form Factor 2U rack-mount, 483 mm (W) × 457 mm (D)
OS / Flash Not included — flash card and Cisco IOS must be purchased separately
Warranty 12 months (Reboot IT)

Is It Right for You?

Best For ✓ Not For ✗
Medium-to-large branch WAN aggregation and VPN Plug-and-play deployments (requires IOS + config)
Multi-service voice, security, and switching in one chassis SD-WAN or cloud-managed deployments
CCIE Enterprise and voice lab environments Simple home or SOHO routing needs
ISDN BRI / T1/E1 voice gateway integration High-throughput internet edge routing

Condition Grades

Grade Description
A — Excellent Minimal signs of rack use. Light scuffs or micro-scratches only. All ports, slots, and interfaces fully tested and functional.
B — Good Visible chassis wear — scratches, scuff marks, or minor paint chips. Fully functional. All components tested and verified.

Frequently Asked Questions

Does this come with a flash card or Cisco IOS?

No — this unit ships without a flash memory card and without Cisco IOS software. You will need to purchase a compatible CompactFlash card and obtain a Cisco IOS licence separately before the router can operate.

What modules are included with this unit?

This unit includes: C3900-SPE150/K9 (Services Performance Engine 150), 2 × VIC2-2BRI-NT/TE (ISDN BRI voice interface cards), 1 × VWIC3-1MFT-T1/E1 (T1/E1 voice/WAN card), and 1 × SM-D-ES3G-48-P (48-port Gigabit EtherSwitch module). Module configuration may vary by unit.

How does the 3945 differ from the 2951?

The 3945 has 4 Service Module slots (vs 2 on the 2951), 1 GB DRAM (vs 512 MB), and higher overall throughput capacity. It is suited to medium-to-large branches with higher concurrent service demands across routing, security, voice, and switching.

Is this suitable for CCNP or CCIE lab use?

Yes — the 3945 is an excellent lab platform for CCNP Enterprise and CCIE Enterprise or Voice study. The included voice and switch modules extend lab scenarios to cover unified communications, multi-tier LAN design, and T1/E1 WAN simulation.

What warranty is included?

A 12-month Reboot IT warranty covers all hardware components from the date of purchase.

How does shipping work?

Shipping costs apply based on size and destination — rates are calculated at checkout.

12-Month Warranty — Reboot IT

Every Cisco 3945 ISR sold by Reboot IT includes a full 12-month warranty covering all hardware components. Reboot IT has been Melbourne’s trusted refurbished IT specialist since 2001, operating from reboot-it.com.au. Note: flash card and Cisco IOS are not included with this unit.

Specifications
  • Model
    Cisco 3945
  • Colour
    Black
  • Warranty
    3 Month

What's in the box
  • Cisco - Cisco 3945
  • Tax invoice
By buying refurbished, you avoid
250kg

of CO₂ vs. manufacturing new

And divert
4.5kg

of e-waste from landfill

Source: Cisco Catalyst PAIA lifecycle — per unit.

Why the Cisco 3945?

This Cisco 3945 ISR delivers enterprise-grade routing with 3-port Gigabit Ethernet, 4x EHWIC slots, and includes comprehensive modules for voice, WAN connectivity, and 48 additional GigaPort switching capabilities.

Cisco 3945 K9 Integrated Services Router | 3mth Wty

Enterprise Grade Routing

The Cisco 3945 provides multicore CPU performance with integrated security and unified communications for demanding branch office environments.

Complete Voice Integration

Includes 2x BRI voice cards and T1/E1 WAN interface card for seamless voice and data convergence in a single platform.

Extensive Connectivity Options

Features 3-port Gigabit Ethernet, 4x EHWIC expansion slots, plus included 48-port GigaBit switching module for comprehensive network connectivity.

Comprehensive Warranty Coverage

Backed by REBOOT IT's 3 Month warranty for complete peace of mind with your refurbished enterprise networking investment.

Enterprise Grade Routing

The Cisco 3945 provides multicore CPU performance with integrated security and unified communications for demanding branch office environments.

Complete Voice Integration

Includes 2x BRI voice cards and T1/E1 WAN interface card for seamless voice and data convergence in a single platform.

Cisco 3945 K9 Integrated Services Router | 3mth Wty

Extensive Connectivity Options

Features 3-port Gigabit Ethernet, 4x EHWIC expansion slots, plus included 48-port GigaBit switching module for comprehensive network connectivity.

Comprehensive Warranty Coverage

Backed by REBOOT IT's 3 Month warranty for complete peace of mind with your refurbished enterprise networking investment.

Let customers speak for us

from 708 reviews
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Fantastic service

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James Lees
All-in-one Solution for Home Office

I was looking for an in-expensive all-in-one solution for my home office to replace my existing desktop and monitor. I found this EliteOne 800 on reboot IT for under $200. I wasn't sure what to expect. It arrived within two days!!!! I upgraded the RAM, replaced the HDD and installed Windows 11. This is unbeatable value and was the cheapest price online. Coupled with a 3-month warranty, Reboot IT are by far the best online refurbished retailer I have used. Awesome!

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Farley

Great service. Product in great condition and exactly what i want. I wanted this for a specific purpose but i dont need to spend $900 on a new one.

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Melinda Panuan
Excellent

Excellent work

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steve maloney
exactly as described and works well

exactly as described and works well , just like the staff down there. 10/10

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Lenovo ThinkPad X1 Carbon G5 i7 6600U 2.6GHz 8GB 256GB 14" W10P | Wty
Anonymous
Very happy

Very happy, thank you

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Barbara Jenkins Jenkins
Just having trouble greeting it linked to the internet otherwise it’s okay

Just having trouble greeting it linked to the internet otherwise it’s okay.

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Anonymous
Fair tech for price

Fair tech for price, good specs for era, serves the purpose. The black keyboard is an interesting rubber like texture clearly by design to pad the screen and avoid the keyboard touching. Screen is great. Still looking for magic formula to enable computer use in the bright bright sunshine. Keyboard taps are loud for someone who likes silent touch. The perfect PC has to exist, like build a bear.

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IAN BOLSTER
Works excellently as advertised.

The laptop was sold with a warning about worn keycaps. In fact they had been obviously vandalised (ex school laptops, perhaps?). The keyboard worked fine, and the rest of the laptop too. I'm using it as a file server, so I don't need the keyboard much. So very pleased, and also pleased with reboot-it's service - as always, excellent, and quick responses to any queries.

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Since 2001, Reboot IT has been Australia’s trusted source for certified refurbished computers and IT hardware. Every device is rigorously tested and professionally refurbished to deliver reliable, like-new performance — all at a fraction of the cost of new equipment. With over 100,000 satisfied customers, we combine expert quality with unbeatable value. Shop with confidence knowing your refurbished device comes backed by warranty and supports sustainable tech reuse.

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