configure bgp maximum-as-path-length

configure bgp maximum-as-path-length max-as-path

Description

This command adds support for filtering BGP (Border Gateway Protocol) updates based on a specified maximum autonomous system path (AS-path) length. This support is on a per BGP instance basis (not per neighbor).

Syntax Description

maximum-as-path-length Specifies setting the AS path length.
max-as-path Value specifying the AS path length.

A value of 0 indicates no AS-path limit.

Range is 1 to 1,500.

Default

N/A

Usage Guidelines

It can be desirable to protect the router against BGP updates with excessively long AS-paths to ensure memory is not exhausted. Any BGP updates that exceed this user-defined limit are dropped. This setting does not affect existing routes.

Example

The following example sets the AS-path to 500.

configure bgp maximum-as-path-length 500

History

This command was first available in ExtremeXOS 21.1.

Platform Availability