Sparked Host LLC - Scheduled Network Redundancy Test - Dallas – Maintenance details

Impact: Brief network interruption in Dallas

Maintenance Description:

We are conducting a scheduled maintenance event to test our network redundancy protocols at our Dallas facility. This test involves a controlled reboot of one of our core spine switches to validate our failover mechanisms.

While our network is designed with redundancy between our spine and access switches, a brief, minor interruption may occur as traffic reroutes during the failover. We expect any impact to be minimal and short-lived.

This proactive testing is essential to ensure the continued stability and resilience of our network infrastructure. Thank you for your understanding.

Technical Background:
Our network infrastructure in Dallas uses a spine-and-leaf topology, which is a highly scalable and resilient data center network architecture. This design consists of spine switches (the backbone) and leaf switches (access points for servers).

To ensure high availability and prevent a single point of failure at the core of our network, we've configured our two core spine switches using Multi-Chassis Link Aggregation (MLAG). MLAG is a proprietary protocol that allows two or more switches to act as a single logical switch. It works by bundling multiple physical links from different switches into a single logical channel, providing both link and device-level redundancy.

Our access switches are connected to both spine switches with redundant links. This setup allows them to continue functioning even if one of the spine switches becomes unavailable.

During this maintenance window, we'll be deliberately rebooting one of the MLAG-configured spine switches to simulate a failure. This test will verify that our network traffic seamlessly fails over to the remaining spine switch without any prolonged interruption. The access switches will automatically redistribute traffic across the active links to the functioning spine switch. This is a critical step in ensuring our network can withstand unexpected failures and maintain consistent performance.