To create an ISID policy on a control or user B-VPLS site
Purpose
An ISID policy defines a group of actions for individual ISIDs or ISID ranges. You can define whether the default multicast tree is used and whether the advertisement of ISIDs in SPB is suppressed when I-VPLS or static ISIDs are used for unicast services. See To enable SPB on a control B-VPLS site and To enable SPB on a user B-VPLS site for information about how to enable SPB on a control or user site.