In this blog series, we have been providing more detail on the five new pillars of the Cisco Crosswork automation solution. So far, you have learned about Cisco Crosswork Change Automation, Cisco Crosswork Network Insights and Cisco Crosswork Situation Manager. Today, let’s take a closer look at Cisco Crosswork Health Insights.
Intent-based networking promises to improve network availability and agility, which are key considerations as operators digitize their operations. Cisco Crosswork Health Insights can improve network availability by providing tools for device/network health monitoring to reduce MTTK/MTTR of network issues. Cisco Crosswork Health Insights (CCHI) simplifies and abstracts the collection and analysis of time series data and helps rectify network faults via key value drivers described below.
Let’s look at an example of Smart Alerts and Remediation using out-of-the-box KPI called black hole detection. There could be other KPIs like CEF drops, interface error drops that operators might be monitoring which provides alerts on known issues. Black hole detection helps isolate those problems which are not yet known or could be silent drops in the ASIC(s) which aren’t yet monitored. The transmitted packets/bytes and received transmitted bytes/packets across all interfaces on a device are used to calculate loss ratio. Interfaces statistics aren’t atomically gathered from the devices hence, by applying a low-pass filter like standard-deviation on the loss ratio, we detect if it’s a real anomaly or not. Optionally, we can schedule a CCCA node cost-out playbook when black hole event is detected, this helps to reduce the service impact of a black hole event.
We are very excited about the transformations we are seeing inside of our Service Provider customers and how the Cisco Crosswork network automation solution can help them accelerate their journey to a fully self-healing infrastructure. Please leave comments or questions below so we can continue the conversation – and stay tuned for the final blog in this series.
Ramanathan Lakshmikanthan is a distinguished engineer at SPNAA focused on network automation and analytics. He is responsible for architecture and implementation for various products/applications in Crosswork platform.
Topic: automation solutions | cisco crosswork | network automation | Network Health Insights