What factors are causing the increased latency in Extreme Networks's Fabric Connect deployments reported by customers over the last month?

Introduction

Extreme Networks's Fabric Connect deployments have been experiencing increased latency over the past month, causing significant concern among customers. This issue requires a thorough investigation to identify the root cause and implement effective solutions. I'll approach this problem systematically, focusing on data-driven analysis and strategic decision-making to resolve the latency issues and prevent future occurrences.

Step 1

Clarifying Questions (3 minutes)

• Looking at the timing, I'm thinking there might be a recent change in the network infrastructure. Has there been any significant update or modification to the Fabric Connect architecture in the last 1-2 months?

Why it matters: Recent changes often correlate with performance issues. Expected answer: Yes, there was a firmware update. Impact on approach: If confirmed, we'd focus on the update's impact and potential rollback.

• Considering the nature of latency, I'm wondering about traffic patterns. Have you noticed any changes in network traffic volume or type recently?

Why it matters: Unusual traffic patterns can strain network resources. Expected answer: There's been an increase in video conferencing traffic. Impact on approach: We'd investigate capacity planning and traffic prioritization.

• Given the customer reports, I'm curious about the scope. Is this latency issue affecting all customers or a specific subset?

Why it matters: Helps determine if it's a global issue or limited to certain deployments. Expected answer: It's affecting about 30% of customers, mainly larger enterprises. Impact on approach: We'd focus on characteristics of affected deployments.

• Thinking about potential external factors, have there been any changes in how we're measuring latency or in our monitoring systems?

Why it matters: Ensures we're not dealing with a measurement anomaly. Expected answer: No changes to measurement systems. Impact on approach: If confirmed, we'd rule out monitoring issues and focus on actual network performance.