The Best BGP Monitoring and Anomaly Detection Tools

Border Gateway Protocol (BGP) functions as the main routing protocol that keeps the Internet running. It handles the key decisions routers make to move data between different Autonomous Systems (ASes). Because BGP is so central to how internet traffic moves around the world, it has naturally drawn attention from those with malicious intent.

Here is our list of the best BGP monitoring and anomaly detection tools:

1. Site24x7 Network Monitoring EDITOR’S CHOICE A cloud-based platform built for hybrid and multi-vendor network environments. It brings together BGP, NetFlow, and SNMP monitoring in a single dashboard, giving operators clearer visibility into traffic flows and emerging issues. Sign Up for a 30-day free trial.
2. ManageEngine OpManager (FREE TRIAL) A broad network monitoring solution that includes BGP capabilities. It offers real-time views of BGP routes and can notify teams about unusual route behavior, which may support better stability and quicker responses to potential problems. Download a 30-day free trial.
3. Cloudflare Magic Transit Enterprise-focused service that combines BGP hijack detection, DDoS mitigation, and smarter routing through Cloudflare’s extensive global Anycast network.
4. Cisco Crosswork Cloud Network Insights Formerly known as BGPmon, this tool has built a strong reputation in the community for its routing data collection and features that help organizations identify and respond to BGP route hijacking attempts.
5. Kentik Network Security and Compliance Network traffic analysis platform designed to surface BGP anomalies, assist with performance tuning, and support security and compliance needs.
6. BGPStream Open-source project that delivers real-time BGP data feeds, making it easier to spot and visualize anomalies or suspicious activity.

BGP was designed to accept route announcements from other networks on trust, without strong built-in checks. This approach can open the door to incidents like route hijacks, leaks, or prefix disruptions. Many network teams now rely on monitoring and anomaly detection tools to gain better awareness and help protect their part of the internet.

This article looks at different tools and methods available for tracking BGP activity. It covers how these solutions operate, the features they provide, and the ways they can contribute to stronger network security and smoother connectivity.

The importance of BGP monitoring and anomaly detection

BGP serves as a core protocol for inter-domain routing, guiding how data packets travel across the internet. It works by exchanging routing information between different Autonomous Systems (ASes), helping ensure traffic reaches its intended destination. At the same time, its trust-based design — which accepts route announcements without strong built-in validation — can leave it exposed to various security risks.

A BGP hijack typically happens when an unauthorized party advertises IP prefixes it doesn’t control, potentially redirecting traffic through their own network. Route leaks occur when routes are shared improperly between networks, which can result in inefficient paths and unintended traffic flows. Prefix disaggregation involves splitting larger IP blocks into smaller ones; while sometimes legitimate, this technique can also be used to interfere with normal routing and generate extra network load.

This is why many network operators turn to BGP monitoring and anomaly detection. Unusual patterns in BGP updates can signal possible malicious activity, misconfigurations, or other problems that might affect connectivity. Tools in this space typically collect and analyze BGP data in real time, helping teams spot irregularities early and respond before minor issues escalate into larger disruptions.

Selecting BGP monitoring tools

The market for dedicated BGP monitoring solutions is relatively limited. Even fewer tools are built specifically around BGP security and threat detection. That said, several strong options exist — including platforms originally focused on general network performance that also deliver useful anomaly detection capabilities for BGP.This selection draws from tools that provide practical visibility into BGP activity, helping network teams monitor routes, spot irregularities, and respond to potential issues.

Key concepts in BGP anomaly detection

Prefix and route anomalies

• Prefix Hijacking: One of the more frequent BGP-related issues occurs when an unauthorized party advertises IP prefixes they do not own. Detection approaches typically compare advertised prefixes against known ownership records to flag potential hijacks originating from unexpected Autonomous Systems.
• Route Leaks: These happen when routes are advertised to networks that were not intended to receive them, which can lead to suboptimal paths or unintended traffic exposure. Monitoring solutions often examine propagation patterns to help identify leaks before they cause widespread impact.

BGP path anomalies

• AS Path Prepending: This technique involves lengthening the AS path to influence route selection. While sometimes used legitimately for traffic engineering, unusual or aggressive prepending can signal manipulation. Tools can highlight significant deviations from normal path lengths for a given prefix.
• AS Path Loops: BGP includes built-in safeguards to avoid routing loops by checking AS numbers in the path. Unexpected repetitions or irregularities in the AS path can indicate configuration errors or suspicious activity worth investigating.

BGP route flapping

Route flapping refers to rapid, repeated advertisement and withdrawal of the same routes. This instability can affect overall network performance. Anomaly detection systems monitor update frequency and can alert teams to excessive flapping that may point to problems or attacks.

Prefix disaggregation

Disaggregation involves splitting larger IP blocks into smaller, more specific prefixes. Although this can be a valid optimization strategy, sudden or excessive disaggregation may aim to increase visibility in routing tables or consume resources. Monitoring tools track changes in prefix size and specificity to distinguish normal from potentially disruptive cases.

Security violations via BGP

Because BGP lacks native encryption and strong authentication for routing updates, it remains open to various forms of interference, such as unauthorized announcements or route modifications. Many detection tools focus on identifying suspicious patterns in BGP messages and validating announcements against expected behavior or external data sources.

The best BGP monitoring tools for anomaly detection

1. Site24x7 Network Monitoring Tool (FREE TRIAL)

Site24x7 Network Monitoring is a cloud-based tool that tracks network performance and traffic. One of the most remarkable features is that it is built on the same core as ManageEngine OpManager. The tool includes SNMP, NetFlow, and setup tools to catch problems early. It also supports BGP and helps monitor traffic behavior in such complex networks.

With this tool, everything is shown in one online dashboard. For instance, you can view stats, traffic, devices, and alerts. It also works with many types of hardware, so there’s no need for on-site systems.

Key Features: 

• Unified Monitoring Platform: Monitor network performance (uptime, bandwidth, CPU/memory), traffic (NetFlow), and configurations from a single cloud-based interface.
• Broad Device Coverage: Supports 450+ vendors and 11,000+ device templates, including routers, switches, firewalls, printers, UPS devices, and VoIP endpoints.
• NetFlow Traffic Analysis: Track traffic by application, IP, port, or protocol to identify bandwidth hogs.
• Network Configuration Management (NCM): Automate config backups, change tracking, compliance checks, and vulnerability detection across supported devices.
• BGP and SD-WAN Awareness: Monitor SD-WAN and software-defined networks. It supports SNMP trap processing and custom MIBs for extended monitoring.
• Automated Network Discovery: Discover network assets using IP ranges or CIDR blocks; includes Layer 2 topology maps and auto-generated device relationships.
• Mobile Monitoring: Native iOS and Android apps for remote visibility and on-the-go diagnostics.

Why Do We Recommend It?

You may want to look at Site24x7 if you’re dealing with messy, multi-vendor networks. This monitoring solution does one thing well: catching network issues before they become headaches. We’ve seen it flag BGP routing glitches and traffic spikes before anyone on the team even noticed something was off. Plus, while testing the tool, we liked how fast it got up and running. You don’t need hardware. You will start with just a clean SaaS setup that pulls in SNMP traps, tracks traffic, and starts alerting right away. Consider Site 24×7, especially if you’re tired of slow, clunky NMS tools,

Who Is It Recommended For?

Site24x7 works well for mid-size and large businesses. It’s a strong choice for companies with hybrid networks or multiple locations. Managed service providers (MSPs) can also use it to monitor systems at scale. IT operations teams and network engineers will also love its detailed insights. Consider this tool: if your organization uses BGP, SD-WAN, or equipment from different vendors, Site24x7 brings everything together in one place.

Site24x7’s Network Monitoring Tool is an excellent choice for IT teams. It works well in cloud-based and distributed networks. The tool supports BGP, detects problems automatically, offers smart setup help, and much more. The tool is built to keep large networks healthy and running smoothly. Learn more and start a free trial.

2. ManageEngine OpManager (FREE TRIAL)

ManageEngine OpManager is a network monitoring platform aimed at enterprises that need broad visibility into their infrastructure. Its BGP monitoring capabilities allow teams to keep an eye on BGP routes, session status, and potential routing irregularities.

Key Features:

• Real-time BGP Monitoring: Provides visibility into BGP route updates and can help identify issues such as route flapping or unexpected changes.
• BGP Peer Monitoring: Tracks the status and health of BGP peers, supporting more stable router-to-router communication.
• BGP Route Analysis: Examines routing tables and updates to surface possible anomalies in paths, which can assist with troubleshooting.
• BGP Alerting: Offers customizable notifications for events like shifts in AS paths or prefix announcements.
• Multi-Vendor Support: Works with routers and devices from various manufacturers, which can be helpful in mixed network environments.

Why do we recommend it?

OpManager gives network teams real-time insights into BGP activity and can flag anomalies such as route hijacks or leaks. Its peer monitoring, route analysis, and alerting features offer practical support for maintaining routing stability and responding to potential issues.The full OpManager package delivers broader network monitoring, covering routers, switches, firewalls, servers, and other infrastructure components. It includes performance tracking, fault detection, and traffic analysis capabilities for more complete IT oversight.

Who is it recommended for?

OpManager is often considered by medium to large organizations that want a unified view of their network environment. It tends to fit well for teams managing complex, multi-vendor setups where consistent monitoring and timely notifications are important for day-to-day operations.

OpManager is available as downloadable software that can be installed on Windows Server or Linux environments. It is also offered as a hosted service through the AWS Marketplace and Azure Marketplace, giving teams flexibility in how they choose to deploy it. You can explore OpManager further before buying by accessing a 30-day free trial.

ManageEngine OpManager Start a 30-day FREE Trial

3. Cloudflare Magic Transit

Cloudflare Magic Transit is a cloud-based service that helps protect enterprise networks by combining DDoS protection, BGP security, and optimized routing across Cloudflare’s global Anycast network. It aims to reduce the risk of BGP hijacking and other routing anomalies by leveraging Cloudflare’s extensive worldwide infrastructure.

Key Features:

• Route Filtering: Applies filters to help block unauthorized or suspicious BGP routes, allowing only expected routes to be accepted.
• BGP Route Validation: Supports mechanisms such as RPKI to verify the legitimacy of BGP announcements and reduce the chance of route hijacking.
• DDoS Protection: Delivers mitigation using Cloudflare’s global network without requiring additional on-site hardware.
• Fast Mitigation: Designed to detect and respond to malicious traffic quickly, often within seconds.

Why do we recommend it?

Cloudflare Magic Transit is included for its ability to provide BGP monitoring and protection as part of a broader security and routing service. By routing traffic through Cloudflare’s Anycast network, it offers real-time visibility into BGP announcements and can help respond to suspicious activity or potential hijacks before they affect operations.

Magic Transit works by directing your network’s traffic through Cloudflare’s global infrastructure. The service continuously observes BGP updates and can automatically detect and mitigate anomalous routes or attack attempts.

Who is it recommended for?

Magic Transit is generally suited for large enterprises and organizations with complex, high-traffic networks that need strong BGP security, traffic optimization, and DDoS protection. It works particularly well for teams operating mission-critical environments where scalability and rapid response are important.

Cloudflare provides custom pricing for Magic Transit. You can request a demo to evaluate the service further.

4. Cisco Crosswork Cloud Network Insights

Cisco Crosswork Cloud Network Insights is a cloud-based platform that delivers visibility and analytics for network operations. It builds on BGPmon technology to provide monitoring of BGP activity, helping teams track routes and identify potential routing issues.

Key Features:

• BGP Monitoring with BGPmon: Continuous tracking of BGP sessions and route updates.
• Automated Alerts: Notifications for unusual routing changes that may indicate hijacking, leaks, or other anomalies.
• Network Performance Analytics: In-depth insights into traffic patterns and overall network behavior.

Why do we recommend it?

Cisco Crosswork Cloud Network Insights is included for its strong BGP monitoring heritage through BGPmon. The platform offers real-time visibility into routing activity and supports detection of potential security issues like route hijacking or leaks, making it a practical option for organizations managing complex networks.

The integrated BGPmon component focuses specifically on BGP monitoring. It helps surface routing anomalies, misconfigurations, and suspicious activity, giving network teams earlier awareness and more context for troubleshooting.

Who is it recommended for?

This solution is generally suited for large enterprises and service providers that need detailed BGP monitoring combined with broader network analytics. It works well for teams responsible for complex, high-scale infrastructures where routing stability and security are priorities.

Cisco Crosswork Cloud Network Insights is a cloud-based solution and can be accessed from any device with an internet connection. Cisco offers a 30-day free trial so teams can evaluate the platform before purchasing.

5. Kentik Network Security and Compliance

Kentik Network Security and Compliance is a cloud-native observability platform that delivers detailed visibility into network traffic, security events, and overall performance. It uses big data analytics and machine learning to help detect anomalies, potential threats, and compliance issues. Its BGP monitoring features support tracking of routing behavior and identification of events such as hijacks, leaks, and misconfigurations.

Key Features:

• BGP Monitoring: Real-time visibility into BGP routing paths with alerts for anomalous activity including route hijacks, prefix leaks, and other routing issues.
• Traffic Analytics and Security: Combines deep packet inspection and anomaly detection to surface potential security incidents like DDoS attacks.
• Compliance Reporting: Offers pre-built templates for common regulations such as GDPR, HIPAA, and PCI DSS.

Why do we recommend it?

Kentik is included for its strong combination of BGP monitoring, traffic analysis, and security capabilities. The platform integrates data from multiple sources and applies analytics to deliver actionable insights, helping teams maintain routing visibility while supporting security and compliance efforts.

Kentik provides real-time monitoring and reporting tools that can assist with meeting various regulatory requirements. Its dashboards and automated features help network teams track compliance status and respond more efficiently to potential issues.

Who is it recommended for?

Kentik is generally suited for large enterprises, service providers, and security-conscious organizations that need in-depth network traffic analysis, BGP monitoring, and compliance support. It works well for teams managing complex environments where performance optimization and regulatory adherence are important.

Kentik is a cloud-based solution with a web-based interface accessible from any internet-connected device. It offers a 30-day free trial, giving teams the opportunity to test its capabilities before subscribing.

6. BGPStream

BGPStream is an open-source tool developed to help network administrators and researchers monitor and analyze Border Gateway Protocol (BGP) activity across the global internet routing ecosystem.

Key Features:

• BGP Monitoring: Tracks BGP routing updates in real time, helping to surface abnormal or suspicious activity such as hijacks and prefix leaks.
• Historical Data Analysis: Enables review of past BGP data to investigate incidents and identify long-term routing trends.
• Modular Architecture: Supports integration with various BGP data sources, offering flexibility for different monitoring setups and use cases.

BGPStream provides both real-time and historical visibility into BGP route announcements and withdrawals. Its modular design allows users to pull data from multiple feeds, supporting proactive monitoring and helping detect anomalies like route hijacks, leaks, and other routing issues.

Why do we recommend it?

BGPStream is included for its focused BGP monitoring capabilities, open-source flexibility, and usefulness in detecting routing anomalies. As a free and customizable tool, it appeals to teams looking for a transparent solution without licensing costs.

BGPStream was developed by CAIDA (Center for Applied Internet Data Analysis), a research organization specializing in internet measurement and network analysis. It is actively maintained by CAIDA, with contributions from a community of developers and users focused on performance, scalability, and reliable data handling.

Who is it recommended for?

BGPStream is well suited for network engineers, security researchers, and technically oriented organizations that need a customizable, open-source tool for in-depth BGP monitoring and analysis. It works best for users with the expertise to configure and integrate it into their existing workflows.

BGPStream is a cross-platform open-source tool that runs on Linux, macOS, and Windows. It is freely available with no licensing or subscription fees. Users can download it directly from the project repository and start using it at no cost.