In the Multi-area SPB network the layer 2 redistribution identifies the services that the system transports from the home area to the remote area and the I-SIDs that the system extends across the boundary nodes in an area. The destination area permits or denies the services on basis of the layer 2 redistribution policies that you configure.
You can configure the layer 2 I-SID redistribution on the switch globally. The layer 2 redistribution policies are bidirectional, which means only one redistribution filter applies to both the home area and the remote area.
Note
Any changes in the layer 2 I-SIDs in the home area will trigger updates to the I-SIDs in the remote area or vice versa.
For more information about configuring Multi-area SPB layer 2 redistribution, see: