WebMux
WebMuxTM is a computer networking device manufactured by CAI Networks, Inc. Its function is to direct network packets based on OSI layer 2, 3, 4, 5, and 7 protocols to multiple network servers, accomplishing both fault tolerance and high availability in hosting websites and web-based applications.
WebMux has a built-in health-checking function that detects any failure of the related network devices, including the front network gateway, using protocols like HTTP GET, or SMTP, DNS, NTP. WebMux has BAM and [[Multiple Address Port|MAP] features to relieve congestion from a single network device.
WebMux also has an SSL acceleration feature as well as features to direct website visitors based on MIME headers,cookie, and URL layer 7 pattern match. In 2006, White House took notice of CAI Networks readiness for IPV6. WebMux now supports IPV4 and IPV6 (IPV6 support in WebMux firmware version 8.2.01 and above).
A special WebMux mode called transparent makes TCP/iP and UDP/IP services communicate through WebMux as if they were communicating just via a wire. However, in HA and transparent mode, WebMux is required to use network switches supporting Spanning Tree Protocol.