This read-only counter counts frames that the bridge declined to forward specifically because an administrator-configured filter blocked them, as distinct from frames dropped for topology or capacity reasons. It lets an administrator confirm that traffic-filtering policies configured on the unit are actually taking effect on live traffic. For example, after configuring a filter to block a particular protocol from crossing a bridge, the administrator would watch statBridgeBridgeFrameFiltered increase to verify the rule is being enforced.