A Comprehensive Guide To Internap Network Services

Internap network services provide enterprise-grade, high-performance IP connectivity, data center infrastructure, and managed routing solutions designed for organizations requiring maximum uptime and low latency. Originally developed by InterNAP Network Services Corporation (later known as INAP), these offerings leverage patented Performance-Optimized Routing (POR) technology to dynamically select the best-performing network path across multiple backbone carriers in real time.

Understanding Internap Network Services and the Evolution of INAP

Internap network services emerged to address a fundamental flaw in traditional internet architecture: single-homed and statically routed connections that frequently suffer from packet loss, congestion, and unexpected downtime. By aggregating multiple Tier-1 transit providers into a single unified architecture, the service bypassed the limitations of conventional Border Gateway Protocol (BGP) routing.

During its operational history, INAP expanded from a pure-play IP service provider into a comprehensive cloud, colocation, and managed hosting provider. While corporate structures and brand entities have evolved through restructuring and acquisitions—including Chapter 11 proceedings and subsequent asset sales in the early 2020s—the core architectural concepts of multi-carrier IP blending and performance-optimized routing remain highly influential in modern enterprise networking design.

Organizations often evaluate these historical network architectures to understand how modern software-defined wide area networking (SD-WAN) and intelligent BGP routing tools handle multi-homed carrier selection today. Analyzing these legacy services sheds light on the engineering requirements necessary to achieve carrier-neutral, high-availability connectivity for mission-critical applications such as financial trading platforms, real-time gaming, and global SaaS delivery.

Core Architecture: Performance-Optimized Routing (POR)

The technical backbone of traditional Internap network services is Performance-Optimized Routing. Standard BGP routing typically selects paths based on the lowest autonomous system (AS) hop count, which frequently does not correlate with actual network performance, latency, or packet loss.

How POR Differs from Standard BGP

• Dynamic Path Selection: Instead of relying solely on static metrics or AS path length, POR actively monitors live network parameters across all connected carrier backbones.
• Real-Time Latency Testing: Continuous probing measures round-trip time (RTT), jitter, and packet loss to every reachable destination on the internet.
• Automated Traffic Engineering: When performance degrades on a primary path, the routing engine dynamically shifts traffic to an alternative carrier backbone without dropping active sessions.

The Value of Multi-Carrier Blending

By blending carriers such as Lumen (CenturyLink), NTT, Telia, and Verizon into a single interface, enterprise users eliminate single points of failure inherent in single-provider connections. If one carrier experiences a fiber cut or localized congestion, traffic instantly reroutes through the remaining healthy paths. This approach provides a significant uptime advantage for latency-sensitive applications where standard BGP convergence times (which can take minutes) are entirely unacceptable.

Key Service Offerings and Technical Specifications

Internap network services traditionally encompassed several distinct layers of infrastructure and connectivity. Understanding these components clarifies how enterprise customers integrated the technology into their hybrid IT strategies.

1. Managed Internet Access (MIA)

Managed Internet Access delivered high-speed, reliable IP connectivity directly to data centers or corporate headquarters. It included continuous monitoring, DDoS mitigation features, and SLA-backed performance guarantees regarding packet delivery and latency.

2. Colocation and Data Center Infrastructure

INAP operated carrier-neutral data centers in major metropolitan markets across North America and Europe. These facilities featured dense power configurations, high-security cages, and direct cross-connects to major cloud providers and local telecommunications loops.

3. Cloud and Managed Hosting

Beyond raw connectivity, the provider offered bare-metal servers, virtual machine instances, and managed storage solutions integrated directly into their high-performance IP network, enabling predictable data transfer costs and low-latency access.

Comparative Overview of Enterprise Routing Approaches

To understand the operational impact of performance-optimized routing versus traditional alternatives, examine the comparison matrix below, which evaluates key networking parameters.

Prerequisites for Implementing High-Performance IP Blending

Deploying an enterprise-grade multi-carrier routing strategy requires careful planning regarding infrastructure, hardware, and administrative overhead. Organizations looking to replicate or modernize these capabilities must account for several baseline requirements.

Hardware and Interface Requirements

• Enterprise Routers: High-throughput edge routers capable of handling full internet routing tables or advanced policy-based routing rules.
• Diverse Physical Entrances: Physical fiber connections entering the facility through separate paths to prevent local trench cuts from severing all connectivity simultaneously.
• Autonomous System Number (ASN): Organizations often require their own Public ASN and Provider-Independent (PI) IP address space to maintain IP address portability across carriers.

Operational and Administrative Planning

• Network Operations Center (NOC) Support: 24/7 monitoring capabilities to triage alerts, manage BGP announcements, and coordinate with upstream carrier support teams.
• Bandwidth Commitment (Commit vs. Burst): Financial modeling to balance committed information rates (CIR) with burstable billing structures to manage peak traffic loads efficiently.

Common Implementation Challenges and Troubleshooting

Even with advanced routing architectures, network administrators face recurring operational hurdles. Addressing these challenges proactively prevents unexpected outages and performance degradation.

1. Asymmetric Routing Issues

When inbound and outbound traffic traverse different carrier paths, stateful firewalls may drop packets due to missing session synchronization.

• Solution: Implement strict route verification and ensure state tables are synchronized across clustered firewall appliances.

2. Route Flap Dampening Misconfiguration

Overly aggressive dampening can isolate a stable route due to momentary flapping, leading to degraded performance.

• Solution: Tune BGP dampening timers carefully in alignment with upstream provider recommendations.

3. DDoS Mitigation Overhead

High-performance links are prime targets for volumetric attacks. Without inline scrubbing centers, malicious traffic can saturate expensive transit links.

• Solution: Integrate cloud-based or inline scrubbing services capable of automatically blackholing or cleaning anomalous traffic patterns before they impact core routing tables.

Frequently Asked Questions

What happened to InterNAP Network Services (INAP)?

InterNAP Network Services Corporation experienced significant financial restructuring, filing for Chapter 11 bankruptcy protection in April 2023 to restructure its debt and sell off portions of its infrastructure assets. While the corporate entity underwent substantial changes, the underlying concepts of multi-carrier IP blending and high-performance routing remain foundational principles in modern network engineering.

How does performance-optimized routing differ from standard BGP?

Standard BGP selects the shortest logical path based on autonomous system hops, ignoring live network performance. Performance-optimized routing continuously measures real-time metrics like latency, jitter, and packet loss, dynamically shifting traffic to whichever carrier path is performing best at that exact second.

Can I achieve performance-optimized routing using modern SD-WAN?

Yes. Many modern SD-WAN and intelligent edge platforms replicate the core principles of IP blending by monitoring multiple broadband, fiber, and LTE/5G connections simultaneously and steering application traffic across the best available path in real time.

What types of businesses benefit most from multi-carrier IP routing?

Organizations running real-time, mission-critical applications—such as financial trading platforms, VoIP and video conferencing providers, online gaming servers, and large-scale SaaS providers—benefit significantly because they cannot tolerate the packet loss or latency spikes associated with single-carrier paths.

Do I need my own Autonomous System Number (ASN) to use blended bandwidth?

While having your own ASN and IP allocations provides the greatest flexibility and portability, many providers also offer blended IP services directly to enterprises utilizing provider-allocated IP space through managed routing handoffs.

Next Actions and Recommendations

Organizations seeking to upgrade their enterprise connectivity should conduct a comprehensive audit of their current transit arrangements, latency profiles, and single points of failure. If legacy Internap network services or equivalent multi-carrier architectures align with your operational requirements, evaluate modern carrier-neutral data centers, SD-WAN platforms, and BGP optimization vendors that deliver real-time path selection and automated failover capabilities.