The value of the object svcTlsExtSpbmFid specifies the forwarding
database identifier used by the user SPB VPLS.
An 'inconsistentValue' error is returned if svcTlsExtSpbmCtrlVpls is
set to default and svcTlsExtSpbmFid is set to its non-default value or
when svcTlsExtSpbmCtrlVpls is set to non-default and svcTlsExtSpbmFid
is set to its default value.