The DSG eCM will have one entry for each DSG Tunnel Filter. A DSG eCM in Advanced mode will have at least one such Filter for each DSG classifier, and at least one such Filter for each DSG Tunnel that lacks a DSG classifier (i.e., the DSG Tunnel MAC address is the only relevant filtering parameter). Entries are created when the eCM is instructed to begin forwarding particular DSG Tunnels by the DSG Client Controller. Entries are deleted when the eCM is no longer instructed to forward those particular DSG Tunnels by the DSG Client Controller.