Specifications

tunnel mpls traffic-eng backup-bw
MP-860
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
tunnel mpls traffic-eng backup-bw
To specify what types of label-switched paths (LSPs) can use a backup tunnel or whether the backup
tunnel should provide bandwidth protection, and if so, how much, use the tunnel mpls traffic-eng
backup-bw command in interface configuration mode.
tunnel mpls traffic-eng backup-bw {kb
ps | [sub-pool {kbps | Unlimited}] [global-pool {kbps |
Unlimited}]} {kbps | [class-type {kbps | Unlimited}]
Syntax Description
Command Default If neither the sub-
pool nor global-pool keyword is entered, any LSP (those using bandwidth from the
subpool or global pool) can use this backup tunnel.
Command Modes Interface configuration
Command History
Usage Guidelines If both the sub-
pool and global-pool keywords are specified, sub-pool keyword must be specified first
on the command line. For example, tunnel mpls traffic-eng backup-bw sub-pool 100 global-pool
Unlimited is legal, but it is not legal to specify tunnel mpls traffic-eng backup-bw global-pool
Unlimited sub-pool 100.
To limit the number of both subpool and global pool LSPs, enter the t
unnel mpls traffic-eng
backup-bw sub-pool kbps global-pool kbps command.
The Unl
imited keyword cannot be used for both the subpool and global pool.
kbps Amount of bandwidth in kilobits per second (kbps), that this backup tunnel
can
protect. The router limits the number of LSPs that can use this backup
tunnel so that the sum of the bandwidth of the LSPs does not exceed the
specified amount of bandwidth. If there are multiple backup tunnels, the
router will use the best-fit algorithm.
sub-pool Only LSPs using bandwidth from the subpool can use the backup tunnel.
global-pool Only LSPs using bandwidth from the global pool can use the backup tunnel.
class-type Enter the class type.
Unlimited Backup tunnel does not provide bandwidth protection. Any number of LSPs
c
an use the backup tunnel, regardless of their bandwidth.
Release Modification
12.0(22)S This command was introduced.
12.2(18)SXD1 This command was integrated into Cisco IOS Release 12.2(18)SXD1.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.4(20)T This command was integrated into Cisco IOS Release 12.4(20)T.