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.
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 recently at RSA Conference 2025. 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.
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.
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!
