attribute-priority-adaptivity linear

attribute-priority-adaptivity linear

Configures the secondary tunnel to recompute its SPF using the defined interval.

Syntax: attribute-priority-adaptivity linear [bw_1 time_1]...[bw_n time_n] spf resv_amount time reroute [percent_1 time_1]...[percent_n time_n] jitter percent

no attribute-priority-adaptivity

spf resv_amount time

Each resv_amount/time pair specifies the size of the LSP and the delay associated with recomputing that LSP.

resv_amount - Specifies reservation amount available along the complete path taken by the LSP. LSP reservations for the specified amount of bandwidth are recomputed using the associated timer specified by the time value.

time - Specifies the time the router waits before recomputing the associated LSP.

Valid values are 0.0 - 4294967.00 <s | ms> where s is seconds and ms is milliseconds.

reroute percent time

Each percent/time pair specifies the size of the LSP and the delay associated with rerouting that LSP.

percent - Specifies a percentage of the maximum bandwidth available along the complete path taken by the LSP. LSP reservations for the specified amount of bandwidth are re-routed using the associated timer specified by the time value.

time - Specifies the time the router waits before rerouting the associated LSP.

Valid values are 0.0 - 4294967.00 <s | ms> where s is seconds and ms is milliseconds.

jitter percent

Specifies a percentage the timer is offset to prevent the establishment of many LSPs at the same time. Valid values are 0.0000% - 100.0000%.

Description: A secondary tunnel is a tunnel with a non-zero target attribute priority. The attribute-priority-adaptivity attribute determines how a secondary tunnel responds when new network resources become available or when resource parameters change such that "better" paths become available. There are four attribute-priority-adaptivity methods: disabled, pinned, periodic, and linear.

The linear method associates two or more bandwidth reservation and timer segments in a line that provides a linear relationship between any two segments in the line.

In order to use the linear model, you must configure at least two reservation amounts and their associated timers. You must configure the reservation amounts in descending order and their associated times in ascending order.

Use the attribute-priority-adaptivity linear command to configure the secondary tunnel, default secondary tunnel or parameter-set to recompute its SPF using the linear model.

Use the no attribute-priority-adaptivity command to remove the attribute-priority-adaptivity specification.

Factory Default: Periodic 1200s jitter 240s..

Command Mode: Traffic engineering parameter-set and traffic engineering tunnel-name.

Example: In the following example, the attribute-priority-adaptivity linear spf command configures the secondary tunnel to:

Recompute LSPs that have a reservation of 50 Mb/sec., using a 3 second timer, then

Recompute LSPs that have a reservation of 45 Mb/sec., using a 10 second timer, then

Recompute LSPs that have a reservation of 40 Mb/sec., using a 20 second timer, then

Recompute LSPs that have a reservation of 30 Mb/sec., using a 180 second timer, then

Recompute LSPs that have a 0% reservation, using a 600 second timer.

Reroute those LSPs that have discovered a better path starting with those LSPs that have a 100% reservation and using a 0 second (no delay) timer,

Reroute those LSPs that have discovered a better path ending with those LSPs that have a 0% reservation and using a 60 second timer.

Add a jitter of 25% of the specified timers to prevent LSPs of the same size from attempting to recompute at the same time.

router(config)#mpls te ospf

router(config-te)#tunnel oc12toBos

router(config-te-tunnel)#attribute-priority-adaptivity linear spf 50 3s 45 10s 40 20s 30 180s 0 600s reroute 100% 0s 0% 60s jitter 25%

Related Commands: attribute-priority-adaptivity disabled
attribute-priority-adaptivity periodic
attribute-priority-adaptivity pinned

spf resv_amount time	Each resv_amount/time pair specifies the size of the LSP and the delay associated with recomputing that LSP. resv_amount - Specifies reservation amount available along the complete path taken by the LSP. LSP reservations for the specified amount of bandwidth are recomputed using the associated timer specified by the time value. time - Specifies the time the router waits before recomputing the associated LSP. Valid values are 0.0 - 4294967.00 <s \| ms> where s is seconds and ms is milliseconds.
reroute percent time	Each percent/time pair specifies the size of the LSP and the delay associated with rerouting that LSP. percent - Specifies a percentage of the maximum bandwidth available along the complete path taken by the LSP. LSP reservations for the specified amount of bandwidth are re-routed using the associated timer specified by the time value. time - Specifies the time the router waits before rerouting the associated LSP. Valid values are 0.0 - 4294967.00 <s \| ms> where s is seconds and ms is milliseconds.
jitter percent	Specifies a percentage the timer is offset to prevent the establishment of many LSPs at the same time. Valid values are 0.0000% - 100.0000%.

router(config)#mpls te ospf router(config-te)#tunnel oc12toBos router(config-te-tunnel)#attribute-priority-adaptivity linear spf 50 3s 45 10s 40 20s 30 180s 0 600s reroute 100% 0s 0% 60s jitter 25%

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    Last Updated: 12/19/04 at 14:56:07

attribute-priority-adaptivity linear

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