CONTACT US
1-844-4ZPE-SYS
ZPE CLOUD
Request a Quote
Schedule a Demo

Providing Out-of-Band Connectivity to Mission-Critical IT Resources

KVM vs. Out-of-Band Management: What’s the Difference?

by | Oct 30, 2026 | Consolidation, Data Center Management, Data Center Resilience, Failover Connectivity, Improve Network Security, Increase Productivity, Minimize Impact of Disruptions, Monitoring & Reporting, Network Automation, Out of Band Management, Remote Network Management, Serial Consoles, Simplify Branch Infrastructure

Thumbnail – KVM vs OOB What’s the Difference

IT teams need reliable remote access to critical infrastructure. Their job calls for troubleshooting servers, recovering failed systems, managing network devices, and restoring services. Two technologies make this possible: Keyboard, Video, and Mouse (KVM) over IP, and out-of-band (OOB) management.

KVM solutions give administrators direct, hardware-level control of computers and servers, down to the BIOS level. OOB management similarly provides a separate path for accessing and managing infrastructure independently of the production network.

So, how can organizations use these to create an infrastructure management strategy that helps them resolve issues faster? First, it helps to understand the differences between KVM and an OOB serial console.

 

What is KVM?

KVM stands for Keyboard, Video, and Mouse. A KVM switch allows an administrator to control multiple computers or servers using a single keyboard, monitor, and mouse. KVM-over-IP technology extends this access across a network, allowing authorized users to manage systems remotely.

KVM over IP

Diagram: KVM-over-IP lets remote administrators access server interfaces as if they were physically connected to the device.

What sets KVM apart is that, unlike traditional tools that depend on an operating system or a functioning remote-access agent, hardware-based KVM provides access at the system level. When a server’s operating system is unresponsive or has failed to boot, for example, KVM allows administrators to interact with the device as if they were physically in front of the server.

 

What Can KVM-Over-IP Do?

In terms of troubleshooting and maintenance, KVM-over-IP solutions allow IT teams to:

  • Access BIOS and UEFI settings: Configure firmware and troubleshoot boot-related problems.
  • Diagnose operating system failures: View the server’s screen and interact with it when conventional remote access tools are unavailable.
  • Perform remote installations: Use virtual media to install operating systems, apply updates, or recover a system.
  • Control multiple servers remotely: Access and manage supported systems from a centralized interface.
  • Reduce on-site visits: Resolve many server issues without sending technicians to the rack.

A common scenario is when a server becomes unresponsive after a software update. It either fails to boot or just hangs during the update process. An admin can’t connect through SSH or a remote desktop tool, but with KVM, they have a way to view the server’s actual console, enter its firmware settings, and troubleshoot the problem remotely.

 

But KVM Isn’t Just For Troubleshooting

KVM-over-IP is a necessity in environments where operators need responsive, high-quality remote interaction with computers and workstations. In broadcast studios, for example, video quality and input responsiveness directly affect how people do their jobs.

High_Performance_Video_and_Audio

Image: KVM-over-IP helps teams remotely monitor and control video-intensive environments, such as broadcast studios, control rooms, and testing labs.

Here are more examples where teams need to interact with remote systems as if they were sitting directly in front of them:

  • Broadcast studios: A production engineer needs to access a workstation running broadcast graphics or playout software from a separate control room. KVM allows them to view the workstation’s display and interact with its applications without being physically at the machine.
  • Live production/control rooms: Operators need to switch between video feeds, production interfaces, and monitoring dashboards. Smooth video and responsive controls are necessary in these time-sensitive environments.
  • Testing labs and engineering facilities: Engineers need to operate several test systems, inspect application behavior, and troubleshoot machines running specialized software. KVM lets them interact directly with those systems without moving between physical workstations.

KVM has evolved significantly in recent years. Solutions like Raritan’s Dominion KX III G2 deliver BIOS-level remote access along with high-res, 60fps video, advanced color subsampling, and digital audio. Operators get the remote access and control they need while maintaining the visual responsiveness their work requires. Learn more about the Dominion KX III G2.

 

What is Out-of-Band Management?

Out-of-band management provides a separate path for monitoring, accessing, and troubleshooting infrastructure outside the production network.

Traditional in-band management relies on the production network (the network used to deliver applications and business services). If that network experiences an outage, whether due to a routing failure, misconfiguration, or security incident, administrators lose access to the devices they need to fix the problem.

OOB management addresses this vulnerability by establishing an independent management path. This uses technologies like serial console servers, dedicated management interfaces, and cellular connectivity. OOB gives IT teams access to infrastructure even when the production network is unavailable.

Out-of-Band Management Model

Diagram: Out-of-band management provides remote administrators with a dedicated access path, allowing them to remotely troubleshoot and recover equipment when the production network fails.

The important thing to know is that OOB isn’t just for reaching servers remotely. The goal of OOB is to preserve access to the infrastructure necessary for recovering from an outage. Think of it as a safety net that catches your critical assets when things fall apart and makes it easy to put everything back together.

 

What Can OOB Do?

Out-of-band management helps IT teams:

  • Access device consoles: Troubleshoot routers, switches, firewalls, and other infrastructure through serial connections.
  • Restore connectivity remotely: Diagnose config errors, correct routing issues, and recover network devices without relying on the failed production path.
  • Manage distributed infrastructure: Centrally access equipment across data centers, branch offices, edge sites, and other remote locations.
  • Strengthen security and resilience: Isolate management interfaces from production traffic to reduce exposure and help maintain access during security incidents.

Here’s a common scenario: a branch office’s router becomes unreachable after a configuration change. The production network is disrupted, meaning the normal remote access path is unavailable. An independent OOB connection allows admins to access the router’s serial console, inspect its configuration, and restore connectivity without dispatching a technician.

 

KVM vs. OOB Management: Key Takeaways


Primary purpose
Typical access
Common use cases
Key benefit
Example solution
KVM
Remotely control computers and servers
Keyboard, video, and mouse signals
BIOS access, boot troubleshooting, OS installation, video-intensive workflows
Direct control of a system even when its OS is unresponsive
Raritan Dominion KX III G2
Out-of-Band
Maintain independent access to infrastructure
Serial consoles and dedicated management interfaces
Network troubleshooting, outage recovery, remote site management
Access to critical infrastructure when the production network fails
ZPE Systems’ Nodegrid

The key distinction is that KVM describes how administrators interact with a system, while OOB describes how management access is maintained independently of the production network. They aren’t mutually exclusive: KVM can be (and often is) part of an OOB architecture, and some OOB platforms incorporate KVM capabilities, like ZPE Systems’ Nodegrid.

 

Why KVM and OOB Management Work Better Together

KVM and OOB management address different layers of infrastructure access. Combining these two technologies helps IT teams troubleshoot both individual systems and the networks that connect them, without depending on physical access or production connectivity.

Out-of-Band and KVM work better together

Diagram: KVM and OOB together provide resilient access to network infrastructure and computers/servers.

Here are some scenarios to understand why they work better together:

1. Recovering a server after a failed update
A server fails to boot following a software update. SSH and other OS-level tools are unavailable, and the server is unreachable through the production network. OOB gives admins a dedicated path through which they can reach the server and investigate the problem, while KVM lets them view the server’s screen, access BIOS or UEFI settings, and troubleshoot the boot process.

2. Restoring a branch office after a network outage
A router becomes unreachable after a config error disrupts connectivity. KVM may provide access to a connected computer or supported system interface, but it doesn’t inherently restore access to the network device. OOB management lets an administrator reach the router’s serial console through an independent connection, correct the configuration, and restore network services remotely.

3. Managing a data center with multiple failure points
A data center experiences a connectivity issue alongside a server failure. OOB access allows administrators to troubleshoot network devices and restore connectivity, while KVM provides direct access to affected servers for firmware-level diagnostics and recovery. Together, they give IT teams more options to identify and resolve the underlying problems.

4. Supporting specialized production environments
A broadcast facility needs responsive remote control of video production workstations, while its IT team also needs independent access to the network infrastructure supporting those systems. KVM provides the visual interface and responsive input required for production workflows. OOB management provides a separate route to monitor and troubleshoot switches, routers, and other critical infrastructure if the production network fails.

For all these scenarios, teams benefit by having more than one way to reach the systems they need to recover.

Build a Resilient Architecture With KVM and Out-of-Band

Raritan and ZPE Systems bring complementary capabilities to infrastructure management. Raritan’s Dominion KX III G2 delivers high-performance KVM-over-IP access for server management and video-intensive applications. ZPE Systems’ Nodegrid provides OOB management capabilities designed to help organizations maintain access to distributed infrastructure, troubleshoot network failures, and recover connectivity remotely.

Contact an engineer to discuss your KVM and OOB requirements, and see how you can reduce truck rolls and accelerate recovery.

Get the Network Resilience Blueprint

Ready to get started on your out-of-band strategy? Download the Network Resilience Blueprint and get the five crucial pieces to building an architecture that can withstand outages.

Download Guide
The Network Resilience Blueprint

Enhancing IT Operations with AI and Out-of-Band (OOB) Management

by | May 15, 2026 | Data Center Resilience, Failover Connectivity, Increase Productivity, Minimize Impact of Disruptions, Modernize Legacy Environments, Monitoring & Reporting, Network Automation, Out of Band Management, Power Management, Remote Network Management, Scripting, Serial Consoles, Simplify Branch Infrastructure, Streamline Deployments, Vendor Neutral Platform, Zero Touch Provisioning (ZTP), Zero Trust Security

Thumbnail – Enhancing IT Ops with AI & out-of-band

You don’t really understand your infrastructure until it stops responding.

Not when dashboards are green or when alerts are quiet. But when you lose access to a core device, the network path disappears, and suddenly all your tools depend on the very thing that just failed.

That’s the moment most traditional IT operations fall apart.

Over time, I’ve realized that two things fundamentally change how you operate in those moments:

AI that helps you understand what’s happening, and Out-of-Band (OOB) access that lets you actually do something about it.

Put these together and they completely change how you operate.

 

The Reality of AI: Visibility Without Access is Useless

AI has made huge leaps in IT operations. It can analyze logs faster than any human, correlate events across systems, and let you know about issues you might not catch until it’s too late.

But there’s one big problem no one talks about enough: being able to see the problem isn’t the same as being able to fix the problem.

You can know exactly what failed and still be locked out of the device you need to fix.

That’s where OOB comes in. OOB gives you a path that doesn’t depend on the production network. When everything else breaks, it’s the one door that still opens.

When you have both intelligence and access, you stop being stuck even when these worst-case scenarios happen.

 

Where AI Shows Up In My Work

In my role supporting IT infrastructure and network operations, the combination of AI and OOB directly improves how I manage incidents, maintain systems, and make sure everything keeps running.

1. When Something Breaks and You Don’t Have Time To Guess

Most incidents start with a lot of noise. Alerts pile up, metrics spike, and the systems all tell different stories.

AI helps cut through that noise and chaos. It highlights what’s abnormal, correlates signals, and points you in a direction that’s useful.

Then instead of trying to reach a device through a broken network path (or waiting for someone on-site), you can go straight in through the out-of-band path. You don’t have to put up with delays or workarounds. You see the issue and you act on it right away.

 

2. When The Network Is Down And That’s The Whole Problem

This is the scenario that exposes every weakness in traditional remote access. VPNs fail, jump hosts become unreachable, and monitoring tools go dark. Suddenly, you’re blind and locked out at the same time.

With OOB, that doesn’t happen. You still have direct access to your routers, switches, firewalls, and servers, because your management path isn’t tied to the outage. That means you can:

Out of band management for MSPs and remote recovery

Now layer AI on top of that. Instead of reacting manually, you can trigger recovery actions based on known patterns. The system identifies the issue, and you either validate or let automation handle it.

You fix the issue within minutes instead of waiting hours to regain control.

 

3. When Alerts Become a Problem

Alerts become their own kind of outage. So many can come in, make too much noise, and become easy to ignore or shift way down on the priorities list.

AI helps pull the signals from the noise. It learns patterns, reduces false positives, and prioritizes what needs attention now. Combine this with OOB and it becomes actionable.

You’re getting alerts that matter now, and a way to immediately respond to them regardless of the network’s state. This changes how teams operate under pressure, especially when there’s so much noise that risks putting teams into a state of analysis paralysis.

 

4. When You See The Failure Coming

Some of the best outages are the ones that never happen.

AI is getting better at spotting early signals, like hardware behaving slightly off, configs drifting, and performance degrading in subtle ways. Little problems you wouldn’t normally catch until they turn into really big problems.

With OOB access, you don’t have to wait. You can step in early to:

  • Validate configurations
  • Apply patches
  • Fix issues before they impact production

And you can do it without disrupting live traffic. The way you operate shifts from reactive to intentional.

 

5. When Security Incidents Get Complicated

Security events don’t follow clean paths. If a system is compromised, your primary network might not be trustworthy anymore. Access could be restricted or intentionally cut off.

That’s where OOB becomes your control point. You can isolate systems, investigate directly, and respond without relying on potentially compromised infrastructure.

AI helps detect the threat, while OOB gives you a way to contain it. Without these, response slows down and risk increases.

 

The Shift Most Teams Don’t Plan For

Teams like to assume their tools will be there when they need them. Why wouldn’t they be, right?

But outages don’t work like that. The very systems you depend on, like monitoring, remote access, and automation, rely on the same network that just failed. That’s the blind spot that AI and out-of-band solve.

  • AI improves how you understand problems
  • OOB ensures you’re never locked out of fixing them

When you combine the two, you stop operating in a reactive loop of:

Detect → Wait → Recover

And move toward:

Detect → Access → Resolve (immediately)

 

What You Can Do: Build Your OOB Network

After enough outages, you start to see that better tools don’t always make things better. It’s more about having tools that still work when everything else doesn’t. AI helps you see what’s happening faster and more clearly. OOB ensures you’re never cut off from the systems you need to fix.

Together, they make IT operations resilient in the moments that actually matter, and those are the ones people remember.

Here are some helpful resources to start building your out-of-band network.

Get In Touch With Us!

If your environment depends on high uptime, fast response, and remote visibility, Nodegrid is the solution that incorporates AI with out-of-band management.

Use the form below to contact us and let’s talk about your network resilience goals.

Out-of-Band Management vs FMEA: Bridging IT Recovery with Risk Mitigation

by | Jul 24, 2025 | Data Center Resilience, DevOps, Failover Connectivity, Improve Network Security, Increase Productivity, Micro-segmentation, Minimize Impact of Disruptions, Monitoring & Reporting, Network Automation, Out of Band Management, Power Management, Remote Network Management, Scripting, Serial Consoles, Simplify Branch Infrastructure, Streamline Deployments, Vendor Neutral Platform, Zero Touch Provisioning (ZTP), Zero Trust Security

Ahmed Algam – OOB vs FMEA

Out-of-Band Management vs FMEA: Bridging IT Recovery with Risk Mitigation

By Ahmed Algam

When it comes to mission-critical infrastructure, failure isn’t a possibility, it’s an eventuality. That’s why tools like FMEA (Failure Mode and Effects Analysis) exist in product validation and operational reliability.

But in IT, identifying risks isn’t enough. You have to be able to recover from them.

Let’s talk about where FMEA theory meets OOB (Out-of-Band) practice.

What is FMEA?

FMEA is a structured approach used to answer:

  • What can fail? (Failure Mode)
  • What happens if it does? (Effect)
  • How likely is it to occur?
  • How well can we detect or respond?
  • What actions can reduce risk?

Each failure scenario is scored across three dimensions:

  • Severity – How bad is the impact?
  • Occurrence – How likely is it to happen?
  • Detection – How easily can it be caught before causing damage?

The goal: Mitigate or eliminate high-risk scenarios before they cause downtime.

Where Out-of-Band Management Comes In

Now apply FMEA to IT infrastructure. Picture this:

  • A router that locks up after a patch
  • A firewall pushed with a bad config
  • A top-of-rack switch that loses uplink
  • A server stuck in BIOS after reboot

If your management tools are all in-band, you’re blind.

But with OOB, you keep access even when the network goes dark, using:

  • 4G/5G LTE fallback
  • Serial console access
  • IPMI, Redfish, or BIOS-level control
  • Out-of-band logging and alerting

How OOB Scores on the FMEA Scale

FMEA Parameter Out-of-Band Impact
Failure Mode Network, power, or OS-level outage
Effect Production outage, loss of remote access
Detection OOB alerts via console logs, PDU telemetry, heartbeat monitoring
Occurrence Reduced with safe, controlled remote management
Severity Reduced since recovery actions are possible remotely
Control Remote reboot, BIOS/IPMI access, serial console, file upload

Real-World FMEA Meets Out-of-Band Management

One customer thought they had OOB covered. They plugged a 4G modem into their Cisco router to allow remote access in case of failure.

But when the router failed, their “OOB” path failed with it because their monitoring agent was installed inside the network.

Once we showed them how to move the agent to the true OOB path (outside the primary network), it was an immediate “aha!” moment.

In FMEA terms:
They reduced Occurrence and improved Detection just by separating in-band from out-of-band.

Check out some more real-world stories like this one by reading my other article, 3 Real Lessons in Network Resilience.

Design for Recovery with ZPE

At ZPE Systems, we believe resilience starts with visibility and control, even when everything else fails. That’s the purpose of our Nodegrid platform:

  • Secure, isolated access to remote infrastructure
  • Cellular, Wi-Fi, and wired failover for real redundancy
  • Integrations with top monitoring and automation platforms
  • Smart, adaptive OOB architecture built to support FMEA-driven design

If Your FMEA Requires Recovery, We Can Help!

If your environment depends on high uptime, fast response, and remote visibility, Nodegrid is your bridge between failure analysis and real recovery.

Use the form below to contact us and let’s talk about your FMEA goals.

Yes, You Can Have A Complete Out-of-Band Management Solution In One Device!

by | Jun 17, 2025 | Data Center Resilience, DevOps, Failover Connectivity, Improve Network Security, Increase Productivity, Micro-segmentation, Minimize Impact of Disruptions, Monitoring & Reporting, Network Automation, Out of Band Management, Power Management, Remote Network Management, Scripting, Serial Consoles, Simplify Branch Infrastructure, Streamline Deployments, Vendor Neutral Platform, Zero Touch Provisioning (ZTP), Zero Trust Security

Vishal Gupta – Out-of-band in one device

Out-of-Band (OOB) management used to be a last resort, a ‘break glass’ tool for gaining access to failed IT. But many organizations are now realizing that out-of-band is a strategic weapon that can do much more than get them out of a jam. It can help patch systems within 48 hours, test config changes and firmware updates, and monitor infrastructure health to prevent failures and stay proactive.

But there’s one big problem that stops teams from putting together an out-of-band infrastructure: there are too many devices to piece together and manage.

Traditionally, teams have built OOB environments using multiple devices from different vendors:

  • Routers provided secure connectivity and routing logic.
  • WAN routers served as modular access points.
  • Cellular devices offered LTE/5G backup and remote cellular access when wired networks failed.
  • Serial console servers were added to gain terminal-level access to switches, firewalls, and other appliances.
  • Firewalls or VPN concentrators (for security-conscious teams) were deployed to secure management plane access through encrypted tunnels.
Devices required for OOB
And this handful of infrastructure provides only basic remote access for troubleshooting or recovery. For teams who want to become proactive, they need additional devices like automation servers, Ethernet switches, computing, and storage. This stitched-together model is unsustainable in modern IT environments because it adds complexity that teams can’t manage.

The Complexity of Multi-Device OOB Environments

For teams managing a few sites, juggling devices may be feasible. But when there are dozens, hundreds, or thousands of locations, the cracks begin to show:

1. Operational Complexity

Every device has its own OS, firmware, and configuration syntax. Pushing a global policy change like updating SSH access rules or hardening TLS settings requires custom playbooks for each platform. Over time, this increases the risk of misconfigurations and creates blind spots in security audits.

2. Troubleshooting Bottlenecks

When a site goes dark, support teams need rapid access to console ports, environmental telemetry, and WAN connectivity diagnostics. But a fragmented toolset makes root-cause analysis a game of guesswork – Did the router fail? Does the modem have signal? Is the serial port offline?

3. Inefficient Use of Space and Power

Remote cabinets and edge environments have very limited (if any) rack space. You might have 1RU or less of space, but three devices that need to be installed. Even if you get crafty and manage to squeeze them in, having multiple devices increases power draw, thermal output, and points of failure. This isn’t scalable, especially in cramped environments like cell towers, retail stores, or substations.

4. Increased Procurement and Support Costs

Assembling out-of-band networks from multiple vendor devices simply makes more work for procurement teams, who face long lead times and inconsistent licensing models. But that’s just the beginning. Costs pile up when you need to maintain this infrastructure. It’s extremely expensive to have a separate contract for each cellular device at every location, for example, which can easily add up to hundreds of thousands of dollars every year. Or, having third-party maintenance contracts for existing devices that have gone EOL.

Why Teams Dream of a Single-Box Solution

Remember when the smartphone hit the market? Rather, when it became commonplace and developers started making an app for everything? There were so many single-function devices  and items that you didn’t need anymore – phone, alarm clock, digital camera, calculator, notepad, mp3 player, flashlight – the list goes on.

Networking and IT teams are dreaming of something similar for their infrastructure. At every expo and conference in recent years, we talked with thousands of people who said that out-of-band adds too much extra equipment (and work) that they don’t want to deal with.

So, what do they want? Something that “just works,” according to those we talked to at recent tradeshows. They want to be able to deploy one box that securely comes online, can be configured remotely/automatically, and doesn’t require a bunch of other devices for automation or computing or cellular. Here are some popular wish-list use cases:

  • Remote Sites & Branch Offices: A single appliance that can offer serial access to critical equipment, cellular WAN failover, and environmental monitoring in space-constrained sites.
  • Colocation Data Centers: One platform that combines console access, VPN tunneling, and rack telemetry to reduce hardware costs and footprints.
  • Industrial & OT Environments: Ruggedized devices with extended temperature ranges, shock resistance, and power redundancy ideal for energy, utilities, and manufacturing.

Imagine their surprise when we say, “That’s our box. We do what nobody else can.”

ZPE Systems’ Nodegrid is Single-Box Out-of-Band Management and More

ZPE Systems developed this all-in-one capability and offers devices in a variety of sizes, up to 1RU. This platform is called Nodegrid and it combines the many functions we discussed, plus the ability to host third-party apps/tools, run Ansible and custom automation, and provide centralized management via on-prem deployment or ZPE Cloud connection.

ZPE Combines all the functions of OOB into one device

All-in-One Capabilities

One Nodegrid device handles all the functions of traditional, dedicated devices, including:

  • Serial console server (for direct access to routers, switches, firewalls)
  • Cellular modem (LTE/5G with dual SIM failover)
  • Ethernet routing and switching
  • Secure VPN or SD-WAN capability
  • USB out-of-band storage or keyboard-video-mouse (KVM) options

On top of these, Nodegrid runs VMs, Docker containers, apps, and automation solutions. It replaces up to nine traditional devices and fits neatly in 1RU or less of space.

Here’s how our customer Vapor IO used Nodegrid to free up 5RU and automate their deployments. Read Vapor IO case study .

Centralized Management and Policy Enforcement

Administrators can deploy and manage thousands of units through a single orchestration platform, via Nodegrid Manager (on-prem) or ZPE Cloud (SaaS). This lets them easily enforce access policies, audit activity, and automate firmware updates without relying on disparate interfaces.

Isolated Management Infrastructure Best Practices

Nodegrid provides what is called Isolated Management Infrastructure (IMI), which is an industry best practice for maintaining resilience. Unlike traditional out-of-band, which relies in part on production systems, IMI creates a completely separate management network that remains accessible and online even if the production network completely fails. This lets teams access and recover their systems during an active cyberattack or outage. IMI has been used by hyperscalers for more than a decade and is now being written into new laws around the world.

Hardened Security

The Nodegrid and ZPE Cloud platform have the industry’s highest security. You can read the full security assurance document that covers the hardware, software, and cloud security features, as well as the third-party certifications. Here are some of the highlights: secure boot, signed OS, self-encrypted disk, three Synopsys validations, ISO27001, FIPS 140-3, SOC 2 Type 2.

Automation-Ready

Nodegrid integrates with Ansible, Terraform, and Python APIs, enabling Infrastructure-as-Code (IaC) workflows and automated responses to network incidents. Automation can run natively on the Nodegrid device, or stored in ZPE Cloud and pushed down where needed.

Schedule a Demo

The days of piecing together out-of-band solutions are coming to a close. The overhead, security gaps, and physical constraints are driving a clear trend: simplify the edge, secure the core, and consolidate the tools.

ZPE Systems helps you do all three of these. To get hands-on with our products or chat with an engineer about your specific use case, schedule a demo at the link below.

Schedule a Demo

 

See Nodegrid in Action!

Senior Sales Engineer Marcel van Zwienen put together this 20-minute video giving you a first-hand look at Nodegrid’s interface. He shows you how ZPE Cloud makes it easy to monitor, troubleshoot, and update devices even if they’re thousands of miles away. Don’t miss it!

Watch Video

Marcel van Zwienen gives a walkthrough of ZPE Cloud for remote device management.

“That’s So Obvious Now…” – 3 Real Lessons in Network Resilience

by | Jun 12, 2025 | Data Center Resilience, DevOps, Failover Connectivity, Improve Network Security, Increase Productivity, Micro-segmentation, Minimize Impact of Disruptions, Monitoring & Reporting, Network Automation, Out of Band Management, Power Management, Remote Network Management, Scripting, Serial Consoles, Simplify Branch Infrastructure, Streamline Deployments, Vendor Neutral Platform, Zero Touch Provisioning (ZTP), Zero Trust Security

Ahmed Algam – Thats So Obvious Now

3 Real Lessons in Network Resilience

By Ahmed Algam

Failure is a necessary part of life. It shines a light on things that you didn’t give enough attention to, so you can learn and grow. The same goes for life in IT. We do a lot of planning to prevent failure, but it inevitably shows up and reveals the flaws in our plans. We don’t like failure, but we kind of need it.

Over the past few months, I’ve seen many real-world examples of this. These incidents drove home a hard truth about architecting for network resilience:

Out-of-Band (OOB) access isn’t optional. It’s essential.

Here are three short but very real stories that made this point crystal clear.

1. The Power Outage That Didn’t Stop Us

Our Fremont office went dark. Completely dark. There was a power outage and our provider failed to give us a heads-up, so it took us by surprise.

No power meant routers, ESXi hosts, Proxmox servers, backup systems, and even Wi-Fi were knocked offline. It was a total blackout.

But we weren’t scrambling. We had architected a true out-of-band path using LTE. Even with the production network down, we still had a way in.

From miles away, we diagnosed the problem, rebooted critical infrastructure, and got things running again before most people even noticed.

Lesson: Your recovery plan is only as good as your last mile. If your failover path isn’t truly independent, it’s not a plan – it’s wishful thinking.

2. The Engineer Who Locked Himself Out

A partner’s network went down during a routine change. Not uncommon. What was uncommon? The fact that they had no access to fix it.

All their management traffic – SSH, APIs, everything – was routed through the same production network that had just failed. When that network died, so did their ability to reach any routers or switches. The team was flying blind.

We got the call, helped them recover, and discussed IMI best practices afterward.

Lesson: Never mix management and user traffic. You need a control plane that exists outside your data plane, especially when uptime is mission-critical.

3. “That’s So Obvious Now…” – The Failover Fail

A customer had the right idea: install a 4G modem as a failover path. This is common, and it’s a great way to gain access in case the main path goes down.

But the modem was physically wired into their primary Cisco router.

When that router failed (power surge), so did the modem. To make things worse, their monitoring agent was running in-band. So when the network collapsed, their monitoring did, too. No visibility, no access, no control.

We pointed out this problem. Then we suggested running the agent on dedicated OOB gear instead. Their response?

“That’s so obvious now…but I didn’t even think about it.”

Lesson: Monitoring doesn’t help if it goes down with everything else. Build it into your OOB infrastructure. Make it resilient, not just present.

What I Want You To Take Away From These Stories

Resilience isn’t just about having backup tools or extra hardware. It’s about designing for failure.

It’s about building your architecture so that even if the core goes dark, you still have eyes and hands on the network.

Out-of-Band isn’t a Luxury. It’s your Lifeline. Make sure to Architect it like one.

Here Are Resources to Help Build Your OOB Lifeline

 

Get Hands-On Help From Our Engineers

My colleagues have years of experience architecting these resilience practices. Please use the form to send us a message and get help with your specific use case.

After The Firewall Fails: How Gen 3 Out-of-Band Cuts the Ransomware Killchain

by | Jun 5, 2025 | Data Center Management, Data Center Resilience, Failover Connectivity, Improve Network Security, Increase Productivity, Micro-segmentation, Minimize Impact of Disruptions, Monitoring & Reporting, Out of Band Management, Power Management, Remote Network Management, Serial Consoles, Simplify Branch Infrastructure, Streamline Deployments, Zero Trust Security

How Gen 3 Out-of-Band Cuts the Ransomware Killchain

It’s always frustrating for me to hear about another breach that goes deep. Not because attacks happen (they will), but because so many of them spiral out of control for the same reason: no access, no visibility, no plan that uses the best tools available

Leadership feels reassured when they spend top dollar on prevention. But they overlook the most important part of resilience: mitigation. You can’t build a resilient network with defense alone. You need a plan for when that defense fails. There’s no shortage of high-profile reminders of this

Imagine a submarine breach. Cold water rushes in. The crew is trained, alert, and ready to respond. But when they open the repair locker, all they find is duct tape, a flashlight, and hope. That’s what most IT teams face in a cyberattack.

Without the right tools in place, even the best trained teams can be rendered powerless by a breach. Gen 3 Out-of-Band changes that. It’s your pressure control, isolation chamber, and emergency patch kit that works when everything else doesn’t

Let’s look at a reality-based scenario of how these attacks play out…and how the results can be completely different.

The Breach And The Catastrophe That Follows

The attack begins quietly in the early morning hours. It’s 4:19AM when a sleeper process hidden in the network core activates. Within seconds, systems begin to go offline. At first, it looks like a glitch. But it’s not. It’s ransomware – coordinated, efficient, and already moving laterally.

Dashboards light up, but the core infrastructure is already compromised. Your monitoring tools freeze. VPNs fail. DNS is offline. Something’s wrong, but you can’t see how bad it is. And worse, you can’t do anything about it.

A dark and ominous underwater scene featuring a large submarine submerged in deep ocean waters. The

Your best engineer tries to log in from home. But, SSH hangs. Remote desktop times out. Someone asks if there’s a different way in. Maybe out-of-band access that is not dependent on VLAN1? There’s a moment of hope. An old console server buried in a rack…

But it was decommissioned years ago. Management called it redundant.

Locked Out And Looking In

Internal chats fill with speculation as the situation deteriorates by the minute. Even the cloud console is inaccessible. Your team is blind. No one knows how wide the blast radius is. You can’t tell which systems are down, which are salvageable, or where the attack might spread to next. Backup jobs that were configured on the same network are silent too.

In a last ditch effort, someone volunteers to drive to the datacenter. But, all that’s waiting for them is a locked building that they can’t get into. The badge reader is on the same compromised system. No remote access. No local access. Just a locked door and a blinking red light.

By 8:00 AM, retail locations are trying to open. Customers are walking through the doors and the IT team can only watch the damage unfold. Sure, trucks are rolling, but the systems are down and social media is lighting up. And while the team knows exactly what’s happening, there’s nothing they can do to stop it.

What Goes Wrong With In-Band Management

The problem isn’t that no one had a plan. It’s that they had no access. Without a resilient, independent management plane, even the best playbook can’t be executed.

  • You can’t isolate systems.
  • You can’t confirm where the threat is.
  • You can’t cycle power, restore backups, or even assess the blast radius.
  • You can’t prove you did anything right, because you can’t do anything at all!

When everything depends on a single, fragile production path, any failure becomes total. You’re not just locked out of tools – you’re locked out of the fight.

In-Band management risks admin access

Image: In-band management is risky because admin access shares the same link as the production network. Any production failure cuts admin access.

The Breach And Fast Recovery With Gen 3 Out-of-Band

Now imagine the same breach, at the same hour. The ransomware behaves the same way. Core systems go down. DNS disappears. Monitoring dies. But this time, the team has something different: ZPE’s Gen 3 Out-of-Band infrastructure.

As the attack unfolds, IT first responders are already inside, connected securely through ZPE’s Nodegrid. It doesn’t matter if DNS is down or the VPN won’t connect. You don’t need the production network at all. Unlike that old console server, this connection is entirely separate, isolated by design, and hardened for moments like this.

Instead of floundering in the dark, the team sees exactly what’s happening. They access routers, switches, and servers directly from wherever they are without relying on the compromised environment. One by one, they identify which systems are clean, which are compromised, and which need to be taken offline.

IMI via Gen 3 out-of-band

Image: Gen 3 out-of-band is fully isolated, giving you admin access to isolate, cleanse, and restore systems. This is the only way to cut the ransomware killchain and recover from an attack.

There’s no guesswork, only action. Segments of the network go dark, but intentionally this time. Teams shut down infected zones by port, node, or site. They use ZPE’s devices to restore clean systems from verified backups, remotely power cycle PDUs, and automatically push restore scripts locally. There’s no need for physical access. No one drives to the datacenter. There’s no scramble for access credentials or badge overrides.

The breach is being contained before customers begin to arrive. Core systems are stable. Edge environments are clean. Business resumes without disruption. No social backlash. No ticket surge. No headlines. The fire never reaches the storefront.

How Gen 3 Out-of-Band Makes The Difference

Gen 3 Out-of-Band gives you something most teams don’t have during a crisis: control. Not the illusion of control, but real, operational access no matter what happens to your primary infrastructure.

  • You don’t depend on your main network.
  • You don’t wait for remote hands.
  • You don’t lose time chasing access.
  • You take action quickly, securely, and from anywhere.
ZPE is the drop-in Gen 3 out-of-band solution

Image: ZPE’s Gen 3 out-of-band management solution drops into your environment and hosts all the tools and services for cutting the ransomware killchain.

Because when your network goes dark, Gen 3 out-of-band stays lit. That’s the difference between responding to a crisis and becoming one.

See How to Build Your Recovery Environment

3Building an Isolated Recovery Environment

See how to set up a Secure Isolated Recovery Environment (SIRE) that helps you fight through attacks and hide management access from hackers. Our article walks you through how to build survivable data backups and the designated infrastructure you need to stay secure.

Read Article