SIC Local Realms Overview
Defining a realm as local to the SIC group instructs the SIC to use a local server to process the request. The network access identifier (NAI) in the request identifies the intended realm. To properly interpret requests received from intermediate servers, the SIC server must know which realms it is responsible for servicing locally.
When a request is received, the SIC examines the NAI to determine the realm to which the request is to be routed. If the realm is configured as a local realm to the SIC server, the request is processed by the local server. If no realm is present in the NAI, the request is considered to be local.