February 2025

Out-of-Band Monitoring: What it is and Why You Need It

by Jordan Baker | Feb 13, 2025 | Actionable Data, Data Center Management, 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, Streamline Deployments, Vendor Neutral Platform, Zero Touch Provisioning (ZTP), Zero Trust Security

Network reliability and security are mission-critical for organizations. Yet, relying solely on in-band networks for monitoring and management creates a significant risk. When the primary network experiences an outage or breach, IT teams need to scramble to regain control. Out-of-band monitoring offers a dedicated pathway for monitoring and managing devices, so teams have reliable, always-available access to ensure resilience. But, how does out-of-band monitoring work? What can it monitor? Why is it essential to a network resilience strategy? Let’s find out.

What is Out-of-Band Monitoring and How Does it Work?

Out-of-band monitoring is a network management strategy that uses a dedicated management network, separate from the production network, to monitor and manage critical infrastructure. Whereas in-band monitoring relies on the same data network used by users and applications, out-of-band monitoring remains isolated and operational even if the main network is down.

How does out-of-band monitoring connect to devices?

Console Access via Serial Ports: Out-of-band monitoring uses serial console ports on routers, switches, firewalls, and servers to provide direct access to the device’s command-line interface (CLI). This connection bypasses the primary network entirely.
Dedicated Management Interfaces: Many modern devices come with a dedicated management Ethernet port (e.g., Cisco’s management interface or HP iLO for servers). These ports are linked to an out-of-band network, allowing secure remote access.
Secure Remote Access Gateways: Centralized console servers or remote access gateways aggregate connections to multiple devices, making it easy to manage a large number of endpoints from a single interface.

Teams can gain remote access to out-of-band console servers via dedicated cellular, ISP, Starlink, or other connection that is separate from the main network.

Image: An out-of-band network provides dedicated connectivity that’s separate from the main network. NOC admins can gain access to out-of-band console servers via cellular, dial-up, ISP, or other connection, and manage all data center/branch devices connected to the console servers.

What can out-of-band monitor and manage?

Network Device Status: Real-time monitoring of routers, switches, and firewalls for availability, performance, and errors.
Power Systems: Monitoring and managing power distribution units (PDUs) to ensure stable power, perform remote power cycling, and maintain updated firmware.
Server Health: Tracking CPU, memory, disk usage, and hardware diagnostics for servers through out-of-band management interfaces like IPMI, Dell iDRAC, or HP iLO.
Environmental Conditions: Temperature, humidity, and physical security sensors can be monitored to detect and respond to environmental threats in data centers and remote sites.
Network Connectivity: Ensures WAN links, including primary and backup connections (cellular or satellite), are functioning properly.

How Out-of-Band Monitoring Improves Resilience

Out-of-band monitoring significantly enhances network resilience by providing independent access to critical infrastructure. With transparency into device health, network performance, and other systems, teams can stem issues before they have a chance to develop into outages or security breaches. If any problems do occur on the main network, this out-of-band lifeline lets teams instantly respond rather than forcing them to dispatch on-site technicians.

Always-On Access
Out-of-band networks operate independently from production traffic, ensuring that administrators can maintain visibility and control even when the primary network is congested or down.
Incident Recovery and Diagnostics
When the primary network is compromised, out-of-band allows IT teams to perform root cause analysis, reconfigure devices, and restore services without relying on affected in-band connectivity.
- Example: During a DDoS attack, out-of-band provides a clean path to troubleshoot and block the attack at the firewall.
- Example: If a firmware update causes a network device to become unresponsive, the out-of-band console allows administrators to roll back changes or restore from backup.
Secure and Segmented Access
Out-of-band isolates management traffic from business data, reducing the attack surface and preventing lateral movement by attackers. Combined with multi-factor authentication (MFA), access control lists (ACLs), and encrypted tunnels, out-of-band becomes a secure channel for managing sensitive infrastructure.
Proactive Monitoring and Automation
Advanced OOB solutions enable proactive monitoring of device health and predictive failure analysis. Integrated automation tools can trigger alerts, backups, or failover mechanisms when certain thresholds are reached.

Secure Out-of-Band Monitoring with ZPE Systems’ Nodegrid Platform

When implementing out-of-band monitoring, ZPE Systems’ Nodegrid platform offers a secure, vendor-agnostic solution designed for modern IT environments.

Why Nodegrid Stands Out:

Universal Compatibility: Nodegrid supports a wide range of network devices and servers, integrating with Cisco, Juniper, Dell, Palo Alto Networks, and more.
Consolidated Devices: Nodegrid is a multi-function, drop-in solution that replaces six or more traditional management devices, including servers, routers, switches, cellular, and others.
Built-In Cellular and Starlink Failover: Ensure remote sites stay connected through cellular 4G/5G or satellite (Starlink) connections when traditional WAN links fail.
Centralized Management: Nodegrid provides a unified management interface that enables IT teams to monitor, manage, and automate infrastructure from a single dashboard.
Security First: Nodegrid and ZPE Cloud are the industry’s most secure platform, with features like role-based access control (RBAC), network segmentation, and encrypted communications to safeguard management traffic.

Image: ZPE Cloud enables data collection and analyses for out-of-band monitoring, allowing users to monitor infrastructure metrics, visualize trends, and take a proactive approach to maintaining uptime.

Out-of-band monitoring is essential for any organization prioritizing uptime and security. The Nodegrid platform by ZPE Systems offers secure, scalable solutions like the 96-port Nodegrid Serial Console Plus for hyperscale data centers and the Nodegrid Gate SR for remote sites. With support for automation, APIs, and custom alerts, Nodegrid simplifies out-of-band monitoring for complex networks while ensuring continuous control, even during outages.

Explore Nodegrid for Drop-In Out-of-Band Monitoring

See why Nodegrid is the drop-in out-of-band monitoring solution trusted by hyperscalers, telecom, retail, and hundreds of global organizations. Request a demo today.

Request a Demo

Discover More Out-of-Band Resources

The Future of Data Centers: Overcoming the Challenges of Lights-Out Operations

by Jordan Baker | Feb 10, 2025 | Actionable Data, Data Center Management, 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, Streamline Deployments, Vendor Neutral Platform, Zero Touch Provisioning (ZTP), Zero Trust Security

In a recent article, Y Combinator announced its search for startups aiming to eliminate human intervention in data center development and operation. While one half of this vision seems focused on automating the design and construction of data centers, the other half – focused on fully automating operations (a.k.a. “lights-out”) – is already a reality. ZPE Systems and Legrand are enabling enterprises to achieve this kind of operation by providing the best practices that are already in use in hyperscale data centers for lights-out management.

The Need for Lights-Out Data Centers

The growth of cloud computing, edge deployments, and AI-driven workloads means data centers need to be as efficient, scalable, and resilient as possible. The challenge is that because there is so much infrastructure to manage, the buildout and operation of these data centers becomes very costly and time consuming.

Diane Hu, a YC group partner who previously worked in augmented reality and data science, says, “Hyperscale data center projects take many years to complete. We need more data centers that are created faster and cheaper to build out the infrastructure needed for AI progress. Whether it be in power infrastructure, cooling, procurement of all materials, or project management.”

Dalton Caldwell, a YC managing director who also cofounded App.net, adds, “Software is going to handle all aspects of planning and building a new data center or warehouse. This can include site selection, construction, set up, and ongoing management. They’re going to be what’s called lights-out. There’s going to be robots, autonomously operating 24/7. We want to fund startups to help create this vision.”

In terms of ongoing management and operations, bringing this vision to life will require organizations to overcome several significant problems:

Rising Operational Costs: Staffing and maintaining on-site engineers 24/7 is costly. Labor expenses, training, and turnover increase operational overhead.
Human Error and Downtime: Human error is the leading cause of downtime, so having manual processes often leads to costly outages caused by typos, misconfigurations, and slow response times.
Security Threats: Physical access to data centers increases the risk of insider threats, breaches, and unauthorized interventions.
Remote Site Management: Managing geographically distributed data centers and edge locations requires staff to be on-site. What’s needed is a scalable and efficient solution that lets staff remotely perform every job, outside of physically installing equipment.
Sustainability and Energy Efficiency: On-site workers have specific heating/cooling needs that must be met in order to comfortably perform their jobs. Reducing human presence in data centers enables better energy management, which can lower carbon footprints and reduce cooling requirements.

The Roadblocks to Lights-Out Data Centers

Despite the obvious benefits, organizations struggle to implement fully autonomous data center operations. The obstacles include:

Legacy Infrastructure: Many enterprises still rely on outdated equipment that lacks the necessary integrations for automation and remote control. Adding functions or capabilities typically means deploying more physical boxes, which increases costs and complexity.
Network Resilience and Connectivity: Traditional in-band network management fails during outages, making it difficult to troubleshoot and recover remotely. Without complete separation of the management network from production networks, organizations are unable to achieve true resilience from errors, outages, and breaches.
Integration Challenges: Implementing AI-driven automation, OOB management, and cybersecurity protections requires seamless interoperability between different vendors’ solutions.
Security Concerns: A fully automated data center must have robust access controls, zero-trust security frameworks, and remote threat mitigation capabilities.
Skill Gaps: The shift to automation necessitates retraining IT staff, who may be unfamiliar with the latest technologies required to maintain a hands-off data center.

Image: The traditional management approach relies on production assets. This makes it impossible to achieve resilience, because production failures cut off remote admin access.

How ZPE Systems is Powering Lights-Out Operations

ZPE Systems is already helping companies overcome these challenges and transition to lights-out data center operations. As part of Legrand, ZPE is a key component in a total solution offering that includes everything from cabinets and containment to power distribution and remote access. By leveraging out-of-band management, intelligent automation, and zero-trust security, ZPE enables enterprises to manage their infrastructure remotely and securely.

Image: ZPE Systems’ Nodegrid creates an Isolated Management Infrastructure. This gives admins secure remote access, even when the production network fails or suffers an attack.

Key benefits of this management infrastructure include:

Reliable Remote Access: ZPE’s OOB solutions ensure secure access to critical infrastructure even when primary networks fail. This is made possible by ZPE’s Isolated Management Infrastructure (IMI), which creates a fully separate management network. This single-box solution helps organizations achieve lights-out operations without device sprawl.
Automated Remediation: ZPE’s platform hosts third party applications, Docker containers, and AI and automation solutions. Organizations can leverage data about device health, telemetry, environmentals, and in-band performance, to resolve issues fast and prevent downtime.
Hardened Security: ZPE’s solutions are built with security in mind, from local MFA, to self-encrypted disk and signed OS. ZPE also has the most security certifications and validations, including SOC2 Type 2, FIPS 140-3, and ISO27001. Read our full supply chain security assurance pdf.
Multi-Vendor Integration: ZPE is the only drop-in solution that works across diverse environments, regardless of which vendor solutions are already in place. This makes it easy to deploy IMI and the resilience architecture necessary for achieving lights-out operations.
Comprehensive Data Center Solutions: With Legrand’s full suite of data center infrastructure, organizations benefit from a fully integrated approach that ensures efficiency, scalability, and resilience.

Lights-out data centers are an achievable reality. By addressing the key challenges and leveraging advanced remote management solutions, enterprises can reduce operational costs, enhance security, and improve efficiency. As part of Legrand, ZPE Systems continues to lead the charge in enabling this transformation for organizations across the globe.

See How Vapor IO Achieved Lights-Out Operations with ZPE Systems

Vapor IO is re-architecting the internet. They deploy micro data centers at the network edge, serving markets across the U.S. and Europe. When they needed to achieve true lights-out operations, they chose ZPE Systems’ Nodegrid. Find out how this solution reduced deployment times to just one hour and delivered additional time and cost savings. Download the full case study below.

Download Case Study

Get in Touch for a Demo of Lights-Out Data Center Operations

Our engineers are ready to walk you through lights-out operations. Click below to set up a demo.

Set up a Demo

ZPE Solution Pathways

Discover Nodegrid