default-max-reservable-bandwidth

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Sets the maximum reservable bandwidth that a link can use if the value is not explicitly configured for the interface. Optionally, configures the maximum reservable bandwidth for each level of holding priority.

Syntax: default-max-reservable-bandwidth bandwidth [priority 0...7]

no default-max-reservable-bandwidth priority 0...7

no default-max-reservable-bandwidth

bandwidth

Specifies the default maximum reservable bandwidth. This value is used if no maximum reservable bandwidth is explicitly defined for an interface. Bandwidth is specified using one of the following options: 0-4294967295{b} - specifies the number of bits per second assigned as the bandwidth 0.0000-65535.000 {k | m | g} - specifies the number of bits per second assigned as the bandwidth using floating point notation. {k | m | g} specifies kilobits, megabits or gigabits per second. t1 - specifies a bandwidth of 1.544 megabits/sec. t3 - specifies a bandwidth of 44.736 megabits/sec. oc3 - specifies a bandwidth of 155.520megabits.sec oc12 - specifies a bandwidth of 622.080 megabits/sec. oc48 - specifies a bandwidth of 2488.320 megabits/sec. oc192 - specifies a bandwidth of 9953.280 megabits/sec. % - specifies a percentage of available bandwidth on the link.

priority 0...7

Priority used to protect this tunnel from preemption by a new tunnel.

Description: The default maximum reservable bandwidth specifies the portion of the total available bandwidth that can be reserved when no maximum reservable bandwidth is explicitly defined for the interface.

The maximum reservable bandwidth can be set lower than the value defined by the interface command mpls te max-reservable-bandwidth. Conversely, bandwidth can be set higher than the value set by the command mpls te max-link-bandwidth to permit multiplexing of traffic through multiple LSPs.

Changes to the default maximum reservable bandwidth are propagated to the maximum reservable bandwidth for each interface and to any priority configured using default or percentage (bw%) values.

SONET includes substantial overhead information. This overhead information consumes a portion of the total bandwidth that is not available for routing traffic. See Table 1-1 for a list of the total transmission rate and associated available bandwidths for OC speeds.

Use the default-max-reservable-bandwidth bandwidth command to set the maximum reservable bandwidth when this value is not explicitly configured for the interface.

Use the optional priority 0...7 keyword and value to set the set the maximum reservable bandwidth for each level of holding priority.

Use the no default-max-reservable-bandwidth command to set the maximum reservable bandwidth for all priorities to the default value.

Use the no default-max-reservable-bandwidth priority 0...7 command to set the maximum reservable bandwidth for the specified priority to the default value.

Factory Default: 100.00%.

Command Mode: Configuration.

Example 1: In the following example, the default-max-reservable-bandwidth priority command sets the default maximum bandwidth at 125% of the actual bandwidth and the show mpls te command displays the setting:

router#configure terminal router(config)#default-max-reservable-bandwidth 125% router#show mpls te Traffic engineering is enabled IGP: ospf Default maximum reservable bandwidth: 125.0000%

Example 2: In the following example, the default-max-reservable-bandwidth priority commands set the default maximum bandwidth of the actual link bandwidth used by each of the 8 levels of holding priority, and the show mpls te command displays the new setting:

router#configure terminal router(config)#default-max-reservable-bandwidth 80% priority 0 router(config)#default-max-reservable-bandwidth 70% priority 1 router(config)#default-max-reservable-bandwidth 60% priority 2 router(config)#default-max-reservable-bandwidth 50% priority 3 router(config)#default-max-reservable-bandwidth 40% priority 4 router(config)#default-max-reservable-bandwidth 30% priority 5 router(config)#default-max-reservable-bandwidth 20% priority 6 router(config)#default-max-reservable-bandwidth 10% priority 7 router(config)#end router#show mpls te . . . Max reservable bandwidth:601.0000m Priority Reserved BW Available BW Total BW 0 0.000m 480.800m 601.0000m 1 0.000m 420.700m 601.0000m 2 0.000m 360.600m 601.0000m 3 0.000m 300.500m 601.0000m 4 0.000m 240.400m 601.0000m 5 0.000m 180.300m 601.0000m 6 0.000m 120.200m 601.0000m 7 0.000m 60.100m 601.0000m

Related Commands: show mpls te
tunnel parameter-set
mpls te max-link-bandwidth
mpls te max-reservable-bandwidth

Copyright © 2004 Avici Systems Inc.
Avici® and TSR® is a registered trademark of Avici Systems Inc.
IPriori™, Composite Links™, SSR™, QSR, and NSR® are trademarks of Avici Systems Inc.

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