In an MSTP Bridge, the MSTID to which the FID (of the entry in
the FID to MSTID Allocation Table) is to be allocated.
In an SPT Bridge, the value 4095 is used to indicate unused
(non-filtering) FIDs.
the FID to MSTID Allocation Table) is to be allocated.
In an SPT Bridge, the value 4095 is used to indicate unused
(non-filtering) FIDs.