epanet-js

Iosxrvk9demo613qcow2 Updated Jun 2026

No installs. No forced cloud storage. Just fast, local-first water modeling — powered by the engine you already trust.

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The EPANET user's dilemma

  • Classic EPANET is powerful — but clunky and outdated. Workarounds become your workflow — slow and cumbersome.
  • Big-name platforms look polished, but they're overpriced and bloated with features you don't need to analyze your network quickly.
  • Modern browser-based tools exist — but they force your data into the cloud, raising privacy and compliance concerns. Plus, they offer little for those doing long-term planning and analysis.

You shouldn't have to choose between speed, security, and affordability just to understand your water networks.

Old EPANET UI
Complex Modeling App

Iosxrvk9demo613qcow2 Updated Jun 2026

Locate the updated .qcow2 file. (Note: Cisco IOS images are copyrighted and require a ⁠CCO log on to the ⁠Cisco website to download, according to Spiceworks Community).

Further investigation led me to suspect that "iosxrvk9demo613qcow2 updated" might be connected to the Deep Web or Dark Web. Some online forums and marketplaces seem to be discussing this string in the context of obscure software, virtual machines, or even pirated iOS versions.

The story of is the story of the transition from hardware to software in networking . It represents network engineers scrambling to find a stable, virtual copy of a carrier-grade router operating system (Release 6.1.3) to run in their home labs, usually after official channels restricted access or moved to newer, heavier container-based formats.

IOS XRv is a virtualized instance of Cisco’s high-end operating system, which is typically used on massive service-provider-grade routers like the Cisco ASR 9000 Series . Unlike traditional physical hardware, this virtual image runs on generic x86 servers using a hypervisor. Key Specifications for the 6.1.3 Demo Image

"We have updated our template to support the IOS XRv 6.1.3 qcow2 image." iosxrvk9demo613qcow2 updated

Confirm the version and "updated" status using the Cisco CLI: show version : Displays the 6.1.3 release info.

Fix: Verify that your network driver type is explicitly set to virtio-net-pci or e1000 . Avoid using generic network configurations that do not support hardware address mapping inside the IOS XR kernel.

Understanding the iosxrvk9-demo-6.1.3.qcow2 Update: Implementation, Architecture, and Lab Deployment

To use the iosxrv-k9-demo-6.1.3.qcow2 image inside an EVE-NG Environment , the file must adhere to specific directory naming conventions: Connect to your EVE-NG server via SSH or an SFTP client. Locate the updated

qemu-img create -f qcow2 -b iosxrvk9demo613qcow2-updated.qcow2 lab-router-node1.qcow2 Use code with caution. Step 3: Launch via QEMU Command Line

If the node crashes instantly, ensure you have allocated enough RAM, and that your server is not overcommitted. Conclusion

Transfer your image file into that directory and rename it to hda.qcow2 :

show install active : Lists any installed patches or Software Maintenance Upgrades (SMUs). Some online forums and marketplaces seem to be

The image serves as a vital tool for network simulation. Updating and deploying this specific demonstration file allows engineers to mimic actual Service Provider environments using Cisco's powerful modular operating system, IOS XR.

Which platform you intend to deploy this image on.

to hand ownership back to the hypervisor application: /opt/unetlab/wrappers/unl_wrapper -a fixpermissions Use code with caution. 5. Critical Caveat: The Two-Stage Configuration Model

Because it is an older 32-bit image, it may lack support for modern features like Segment Routing or newer EVPN implementations that are standard in later versions like 7.x or the current 24.x/25.x releases. Update Implications

-machine accel=kvm -cpu host (Crucial for performance). Common Challenges and Solutions 1. High CPU Usage By default, IOS XRv can peg your CPU to

RP/0/0/CPU0:iosxrv(config)# router ospf 1 RP/0/0/CPU0:iosxrv(config-ospf)# area 0 RP/0/0/CPU0:iosxrv(config-ospf-ar)# interface GigabitEthernet0/0/0/0 RP/0/0/CPU0:iosxrv(config-ospf-ar-if)# commit Use code with caution.

Model water networks instantly.

No setup or downloads — just instant access right in your browser.

Start modeling now

EPANET deserves better — and so do you.

EPANET was a gift to the industry — free, open-source water modeling for all. But commercial vendors built on it, locked away improvements, and left the community behind.

epanet-js is our answer: a faster, simpler, affordable water modeling tool that protects your privacy and sustains the open-source future of water modeling.

We're proud to be part of the next chapter — and we're just getting started.

EPA logo
Source code of epanet-js on GitHub

When you support epanet-js, you support EPANET.

When you purchase more features in epanet-js, you're investing in the future of open-source EPANET development.

Our open-source model balances innovation and accessibility:

Anyone can build on our code. The two-year commercial-use delay gives us the incentive to keep pushing forward — and that fuels progress for everyone.

That means when you support us, you support more affordable hydraulic modeling software for the entire community.

Simple, transparent pricing for every kind of modeler.

Choose the plan that works for you

Free

For everyone.$0 /yr
  • Web based EPANET model
  • Background maps and satellite
  • Automated Elevations
  • No limits on sizes
  • Community Support
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ProMost popular

Advanced modeling & scenarios$950 /yr

Individual named license

Everything in free, and:
  • Scenarios
  • Professional support
  • Custom layers
Coming soon:
  • Cloud storage
  • Point in time restore - 30 days
  • Demand analysis
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Teams

Centralized control & collaboration
$4400/yr

Base cost

+
$600/yr

User

Everything in Pro, and:
  • Priority support
  • Self-service seat management
  • Pay by invoice
Coming soon:
  • Team storage
  • Point in time restore - 90 days
  • Sharing models
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Have questions? or book a call.

Special access for personal and educational use

Available for non-commercial projects, learning, and student work.

Personal

$100/yr

For curious minds and personal growth.

Everything in pro, but:
  • Community support only
  • Non-commercial usage
Buy personal access

Education

$0/yr

Free for students and teachers.

Everything in pro, but:
  • Community support only
  • Non-commercial usage
Use your school email account

Frequently asked questions

Find answers to common questions about epanet-js.

Just open your browser and model.

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Why we built epanet-js

Luke Butler - Co-founder
Luke ButlerLinkedIn

Co-founder

Sam - Co-founder
Sam Payá LinkedIn

Co-founder

You may not know this, but for decades, the U.S. EPA has given the water industry an extraordinary gift: the free and open-source hydraulic modeling software EPANET. Odds are, if you've used any commercial hydraulic modeling software today, it was built on the EPANET engine.

The problem is, instead of giving back to their open-source roots like other industries do, big-name software vendors took EPANET's open code, built private tools on top of the engine, and then locked those improvements behind patents and proprietary licenses.

Some vendors even pressured the EPA to focus only on the engine — discouraging any effort to improve the interface or user experience for everyone else.

Those vendors now charge you exorbitant prices to use their software while EPANET lags behind — and utilities, engineers, and educators with smaller budgets suffer.

We think this is backwards — and we're on a mission to change it. We're focused on creating a better experience for the entire hydraulic modeling community.

That's why we built epanet-js under an FSL license — because we want to give you an affordable, easy-to-use water modeling option that creates a sustainable future for open-source EPANET development.

Support EPANET by using software that supports it back.

A better future for water modeling.

Simple, quick, and useful right out of the gate — designed to open-and-go.

Launch epanet-js now