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Home Documentation Junos OS Junos CLI Reference CLI Reference S

Junos CLI Reference

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sync-active-path-bandwidth

date_range 20-Nov-23
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Syntax

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sync-active-path-bandwidth;

Hierarchy Level

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[edit logical-systems logical-system-name protocols mpls],
[edit logical-systems logical-system-name protocols mplslabel-switched-path lsp-name],
[edit logical-systems logical-system-name protocols mpls label-switched-path lsp-name auto-bandwidth],
[edit logical-systems logical-system-name protocols mpls label-switched-path lsp-name (primary | secondary) path-name],
[edit protocols mpls],
[edit protocols mpls label-switched-path lsp-name],
[edit protocols mpls label-switched-path lsp-name auto-bandwidth],
[edit protocols mpls label-switched-path lsp-name (primary | secondary) path-name]

Description

When you have a primary and a secondary path configuration, specify that a path needs to be signaled with the active-path bandwidth when the auto-bandwidth adjustment happens and that the secondary path synchronizes the bandwidth reservations to that of the primary path.

When a primary path fails, bandwidth reservations are made by the secondary path on the links that it uses. If you include the sync-active-path-bandwidth statement, the secondary path releases the bandwidth it has reserved and adjusts its bandwidth after the primary path begins carrying traffic.

For example, suppose the active path is a secondary path with a reserved bandwidth of 10 GB as a result of the automatic bandwidth adjustment. Then suppose there is a switchover from the secondary path to the primary path. After some time the primary path reserves 5 GB as a result of a new automatic adjustment. Without the sync-active-path-bandwidth statement, the secondary path does not release the 10 GB after a switchover occurs. That bandwidth is wasted. If the sync-active-path-bandwidth is included in the configuration, the secondary path adjusts its bandwidth to 5 GB along with the primary path.

Default

When you have a primary and a secondary path configuration, and the primary path fails, bandwidth reservations are made by the secondary path on the links that it uses. When the primary path comes back and the traffic switches over, the secondary path does not release its bandwidth reservations.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 13.2.

Related Documentation

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