This specifies the bandwidth actually reserved by the backup tunnel for facility backup, repeated here from the MPLS-TE MIB because the tunnel entry there would show the signaling-protocol-reserved bandwidth, which is typically 0 for backup tunnels to avoid over-booking, while internal reservations are made on the PLR itself. An admin capacity-planning a backup path must check this object rather than the standard MPLS-TE tunnel table, since that table's own bandwidth field for the same bypass tunnel deliberately shows 0 even when real capacity is held in reserve locally. For example, the MPLS-TE MIB might show a bypass tunnel's signaled bandwidth as 0 while this object reports 50000, revealing the PLR is actually holding 50 Mbps of local capacity in reserve even though the network-wide signaling never advertised it.