What role does the LMHOSTS file perform in ICM?
A. The LMHOSTS file maps NetBIOS names to IP addresses. Cisco ICM servers require Microsoft NetBIOS over TCP/IP protocol to communicate with each other. A NetBIOS session is established between two NetBIOS names. A session setup involves the following phases: • NetBIOS name resolution using Windows Internet Name Service (WINS) server, or the static LMHOSTS file. NetBIOS name query request –> <-- NetBIOS name query response • TCP connection is established: SYN --> <-- SYN-ACK ACK --> • A NetBIOS session is set up over that connection: NetBIOS session setup request –> <-- NetBIOS session setup response In most instances, it is a Named Pipes connection such as mapping a remote drive, establishing a SQL Server connection. The LMHOSTS file is different from the HOSTS file, as a HOSTS file contains IP name-to IP address mappings. The HOSTS file includes addresses for IP routers, automatic call distributors (ACD), voice response units (VRU), application gateway servers, public, public high-
