What are gateways in the Cognos Webserver tier?
The IBM Cognos 8 Web server tier (tier 1.) contains one or more gateways. Web communication in IBM Cognos 8 is typically through gateways, which reside on one or more Web servers. A gateway is an extension of a Web server program that transfers information from the Web server to another server. For failover, the gateway can be configured to know the location of multiple dispatchers.