Technical Documentation

multipath

Syntax

multipath {multiple-as;}

Hierarchy Level

[edit logical-systems logical-system-name protocols bgp group group-name],[edit logical-systems logical-system-name protocols bgp group group-name neighbor address],[edit logical-systems logical-system-name routing-instances routing-instance-name protocols bgp group group-name],[edit logical-systems logical-system-name routing-instances routing-instance-name protocols bgp group group-name neighbor address],[edit protocols bgp group group-name],[edit protocols bgp group group-name neighbor address],[edit routing-instances routing-instance-name protocols bgp group group-name],[edit routing-instances routing-instance-name protocols bgp group group-name neighbor address]

Release Information

Statement introduced before Junos OS Release 7.4.

Statement introduced in Junos OS Release 9.0 for EX Series switches.

Description

Allow load sharing among multiple EBGP paths and multiple IBGP paths. A path is considered a BGP equal-cost path (and will be used for forwarding) if a tie-break is performed. The tie-break is performed after the BGP route path selection step that chooses the next-hop path that is resolved through the IGP route with the lowest metric. All paths with the same neighboring AS, learned by a multipath-enabled BGP neighbor, are considered.

Options

multiple-as—Disable the default check requiring that paths accepted by BGP multipath must have the same neighboring AS.

Required Privilege Level

routing—To view this statement in the configuration.

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


Published: 2010-07-19

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