Alibabacloud Network Reachability Analysis

This one walks you through Alibaba Cloud's NIS network path diagnostics with a careful hand. It covers forward and reverse reachability checks, shows topology in Mermaid diagrams, and pulls CloudMonitor metrics for resources along the path. Strictly read-only, no resource changes allowed. The interactive prompts adapt to Chinese or English and handle all the conditional parameters like on-premise IPs for VPN/VBR scenarios and port logic for reverse path analysis. Useful when you're debugging why two cloud resources can't talk to each other or need to verify security group and route table configs are actually letting traffic through. The mandatory reverse path check is a smart touch that catches asymmetric routing issues you might otherwise miss.