The reservable-bandwidth command is configurable on an MPLS-enabled interface at any time. The configuration of the command takes effect immediately upon preemption of the LSP.
The default value is the total physical bandwidth of the interface.
The percentage decimal parameters specify a value from 0 through 100. The percentage value of 100 specifies that the entire interface bandwidth can be used by MPLS LSPs, when needed.
MPLS interface mode (config-router-mpls-if-eth).
The no form of the command sets the maximum reservable bandwidth back to the default value.
When the maximum reservable bandwidth is configured as a percentage value for LAGs and VE interfaces, and ports go down, or new ports are added to the interface, the reservable bandwidth is recalculated as a percentage of the newly available bandwidth for that interface.
When the maximum reservable bandwidth is configured as either an absolute value, or a percentage value, the value is recalculated and updated to the latest value.
MPLS is supported only on devices based on the DNX chipset family. For a list of such devices, see "Supported Hardware".
The example below shows the configuration of the maximum reservable bandwidth for MPLS LSPs with an absolute value of 10000 kbps.
device# configure device(config)# router mpls device(config-router-mpls)# mpls-interface ethernet 0/1 device(config-router-mpls-if-eth-0/1)# reservable-bandwidth 10000
The following example configures the maximum reservable bandwidth as a percentage (80%) of the total interface bandwidth for the MPLS LSPs on the interface.
device# configure device(config)# router mpls device(config-router-mpls)# mpls-interface ethernet 0/1 device(config-router-mpls-if-eth-0/1)# reservable-bandwidth percentage 80
The following example shows when the maximum reservable bandwidth is changed from an absolute value to a percentage value, and vice versa, the following advisory message displays on the console to indicate the configuration change.
device# configure device(config)# router mpls device(config-router-mpls)# mpls-interface ethernet 0/1 device(config-router-mpls-if-eth-0/1)# reservable-bandwidth percentage 40 Maximum reservable bandwidth is changed from 30 kbps to 40%
The following example shows using the no form of the command to set the maximum reservable bandwidth back to the default value (the total physical bandwidth of the interface) when using the absolute value or percentage value.
device# configure device(config)# router mpls device(config-router-mpls)# mpls-interface ethernet 0/1 device(config-router-mpls-if-eth-0/1)# no reservable-bandwidth percentage 80