![[Day #61 PyATS Series] Automating ISSU (In-Service Software Upgrade) Validation Using pyATS for Cisco [Python for Network Engineer]](https://networkjourney.com/wp-content/uploads/2025/08/Day-61-PyATS-Series-Automating-ISSU-In-Service-Software-Upgrade-Validation-Using-pyATS-for-Cisco.png)
Introduction — key points In-Service Software Upgrade (ISSU) is a powerful technique that allows upgrading the software on clustered or redundant network devices with minimal traffic disruption. But ISSU is risky: subtle control-plane events, process crashes, or platform incompatibilities can cause outages that are hard […]
![[Day #23 PyATS Series] Interface Error Counters Monitoring Using pyATS for Cisco](https://networkjourney.com/wp-content/uploads/2025/07/Interface-error-counters-monitoring.png)
Introduction Monitoring interface error counters is crucial in maintaining a healthy network. Errors such as input drops, CRC errors, and collisions can significantly degrade performance and lead to network outages. Traditionally, network engineers manually run show interfaces commands on each device to track these errors—a […]
