GYAN of the DAY, .IS-IS wasn’t born for IP! It evolved from CLNS to become a core routing protocol in modern networks. #IS_IS #RoutingProtocol #CLNS #IPRouting #NetworkingFacts #CCNA #CCNP #CCIE #NetworkEngineer #DidYouKnow #Cisco #DataNetworking #NetworkSecurity #OSPFvsISIS