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reflect change-path-attribute Highlighted

Latest reply: Nov 27, 2018 06:21:23 2827 5 7 0 0

【Problem Description】

have some question about Huawei NE40 BGP Configuration. 

Due to BGP route reflectors cannotchange any attribute of the routes they reflect.

From the picture, Prefix : originated by PE-A is propogated by Route Reflector to PE-B.

PE-B shown that BGP next hop to is (PE-A).

If we need to modify next hop attributes that are learned from iBGP Peers (PE-A) to (RouteReflector) and allow traffic from PE-B to across the Route Reflector.

Please suggest us for  NE40 Configuration ?

On Cisco Device,We used “next-hop-self all “ to change the NHattributes that learn from iBGP and eBGP to our reflect clients.

【Problem Analysis】


Please refer to command “reflect change-path-attribute” as follow document.


  1. Applythis command in bgp AS

  2. Configureroute-policy and apply for peer


Please refer to this.


If you configure theip-address next-hop with “peer-address” parameter and apply the router-policyfor peer PE-B (peer, then the next-hop address is the local-address ofRR


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Created Nov 6, 2018 07:50:44

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Created Nov 6, 2018 08:01:40

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Created Nov 6, 2018 09:44:25

your document is work for me , i get the point , fix my issue by your doc thanks you very much ,
also hope you public more doc that levle like this .
would you please also mention where from the technical detail , i can found it from orignial part .
from orignial part i can found more correct parameter , this is more important .
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Created Nov 15, 2018 07:10:20

The reflect change-path-attribute command enables an route-reflector (RR) to modify the route attributes of BGP routes using the export policy.

The undo reflect change-path-attribute command disables an RR from modifying the route attributes of BGP routes using the export policy.

By default, an RR is disabled from modifying route attributes of BGP routes using the export policy.

is this right?
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Created Nov 27, 2018 06:21:23

As path is a list sequence of as, indicating that the shorter the AS that arrives at the network, the better. This IP used for router routing optimization uses the next hop property to reach the next hop of the destination network.
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