Specifications

Table Of Contents
tunnel mpls traffic-eng load-share
MP-874
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
tunnel mpls traffic-eng load-share
To determine load-sharing among two or more Multiprotocol Label Switching (MPLS) traffic
engineering (TE) tunnels that begin at the same router and go to an identical destination, use the tunnel
mpls traffic-eng load-share command in interface configuration mode. To disable this feature, use the
no form of this command.
tunnel mpls traffic-eng load-share va
lue
no tunnel mpls traffic-eng load-share va
lue
Syntax Description
Defaults No default behavior or values.
Command Modes Interface configuration
Command History
Usage Guidelines Each parallel tunnel must be configured with this command. Specify a value to indicate the pr
oportion
of total traffic you want to be allocated into each individual tunnel. For example, if there are to be three
parallel tunnels, and you want Tunnel1 to carry half of the traffic and the other two tunnels to carry
one-quarter, you should enter the following values:
Tunnel1 — 2
Tunnel2 — 1
Tunnel3 — 1
The ability to divide bandwidth in unequal amounts across traffic engineering tunnels has a finite
gr
anularity. This granularity varies by platform, with both hardware and software limits. If load-sharing
is configured so that it exceeds the available granularity, the following message is displayed:
@FIB-4-UNEQUAL: Range of unequal path weightings too large for prefix
x
.
x
.
x
.
x
/
y
. Some
available paths may not be used.
To eliminate this message, it is recommended that you change the requested bandwidth or loadshare.
value A value from which the head-end router will calculate the proportion of
t
raffic to be sent down each of the parallel tunnels. Range is from 1 to
1000000.
Release Modification
12.1(3)T This command was introduced.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2SX This command is supported in the Cisco IOS Release 12.2SX train. Support
i
n a specific 12.2SX release of this train depends on your feature set,
platform, and platform hardware.