Description: Indicates the secondary discovery methods enabled on this iSNS Client instance. This allows secondary discovery methods, which are used by a client only if the primary method does not locate an iSNS Server, to be configured. For example, DHCP may be the primary discovery method, and configured-server-list may be a secondary discovery method. Multiple discovery methods in the bitmap may be designated as secondary discovery methods. If this is the case, then the order they are used is determined by the client. The primary discovery method should not be listed as a secondary discovery method. If no secondary discovery methods have been configured, then no bits are enabled. All secondary server methods will be attempted.