Regex Tester & Validator

Parses Cisco IOS XR ISIS routing adjacency change log messages, capturing remote host, local interface, state (Up/Down), and message details. Used in network monitoring to detect ISIS protocol adjacency changes and troubleshoot Layer 2 routing issues. Expects syslog format with timestamp prefix (10 colon-separated fields) and the specific %ROUTING-ISIS-5-ADJCHANGE system message identifier.