Availability: Support Coverage and Serviceability
In a high-performance campus network, Availability is not just about a device being "up"; it is a two-fold strategy encompassing Support Coverage and Serviceability. By leveraging Catalyst Center, you move from a reactive stance to a proactive engineering model that ensures your infrastructure is both supportable and rapidly repairable.
1. Support Coverage: Maximizing Availability by Managing Outdates
The first pillar of availability is maximizing Support Coverage by proactively managing "outdates." Catalyst Center provides visibility into your inventory's EOX (End-of-Life/End-of-Sale) milestones, helping you identify critical gaps in support before they become operational liabilities.
The platform automatically scans for milestones across three critical layers: Hardware, Modules (such as line cards or SFPs), and Software. This comprehensive scan ensures you have a complete, real-time picture of your infrastructure’s lifecycle.
Managing these outdates is the most effective way to reduce your Mean Time to Repair (MTTR). As infrastructure ages and falls out of support, the time required to resolve an incident increases dramatically:
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EOL Hardware: Running hardware that no longer has TAC support often requires physical replacement when an issue occurs. This can stretch resolution times from days to weeks.
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EOL or Deferred Software: Software without active support is prone to known critical issues and security vulnerabilities. Resolving these typically requires a full software upgrade, leading to resolution times of one to two days.
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Latest & Recommended Software: By contrast, maintaining the latest recommended software ensures you are less likely to hit known issues. Because the system is compliant and supported, resolutions can often be achieved in minutes or hours.
By managing these outdates, you effectively bring down MTTR from weeks to hours. Cisco’s Catalyst Center provides insight into EOX which can help monitor and resolve these outdates effectively.
To simplify this transition, Catalyst Center provides inbuilt, automated workflows for Hardware Refresh and RMA, alongside a comprehensive Software Image Management (SWIM) feature. These tools ensure that your lifecycle management is not a manual "toil" but a streamlined, engineered process that keeps your campus network in a fully supported and highly available state.
2. Serviceability: Maximizing Availability by Managing Outdates
Serviceability, refers to the ease, speed, and efficiency with which a network system, device, or service can be maintained, diagnosed, and repaired. The goal is to minimize downtime by ensuring that the information required to fix a problem is available the moment it is needed.
Serviceability is directly tied to how well a device is integrated into Catalyst Center. By ensuring all inventory is Supported, Reachable, and Collecting Telemetry, you guarantee that health data is reported in real-time. When a device reports its health and issues through streaming telemetry, the "diagnosis" phase of troubleshooting is significantly shortened. Instead of manually logging into devices to collect logs during an outage, the data is already centralized and analyzed within Catalyst Center helping to achieve faster MTTR (Mean time to resolve).
By focusing on both support coverage and serviceability, you ensure that your network is not only resilient but also built for rapid recovery, maintaining the information availability required by the modern enterprise.
To explore the complete strategy for building a resilient network, please refer to the full series of posts below:
Elevating Campus Network Reliability Series:
- The Concept: From Hope to Strategy: Elevating Campus Network Reliability
- Chapter 1: Preparation
- Chapter 2: Performance
- Chapter 3: Availability
- Chapter 4: Monitoring
- Chapter 5: Incident Response
