IEEE8021PbbComponentIdentifier
The component identifier is used to distinguish between the multiple virtual bridge instances within a PB or PBB. Each virtual bridge instance is called a component. In simple situations where there is only a single component the default value is 1. The component is identified by a component identifier unique within the BEB and by a MAC address unique within the PBBN. Each component is associated with a Backbone Edge Bridge (BEB) Configuration managed object.