Optional) Enabling The Rr To Modify The Route Attributes Using The Export Policy - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
The BGP view is displayed.
Step 3 Run:
ipv4-family unicast
The IPv4 unicast address family view is displayed.
Step 4 Run:
routing-table rib-only [ route-policy route-policy-name ]
BGP route delivery to the IP routing table is disabled.
The routes preferred by BGP are delivered to the IP routing table by default.
If route-policy route-policy-name is configured in the routing-table rib-only command, routes
matching the policy are not delivered to the IP routing table, and routes not matching the policy
are delivered to the IP routing table, with the route attributes unchanged.
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8.10.6 (Optional) Enabling the RR to Modify the Route Attributes
Using the Export Policy
You can enable the route reflector (RR) to modify the route attributes using the export policy to
change route selection results of the BGP.
Context
According to RFC 4456, the route attributes on the RR cannot be modified using the export
policy. This is because it may cause route loops. By default, the RR is disabled from modifying
the route attributes using the export policy. But if you need to re-plan the network traffic, you
can enable the RR to modify the route attributes by using the export policy.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
bgp { as-number-plain | as-number-dot }
The BGP view is displayed.
Step 3 Run:
ipv4-family unicast
The IPv4 unicast address family view is displayed.
Step 4 Run:
reflect change-path-attribute
You can enable the RR to modify the route attributes of the BGP routes using the export policy.
Issue 02 (2014-09-30)
NOTE
The routing-table rib-only command and the active-route-advertise command are mutually exclusive.
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