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 route transmission task will consume a lot of central processing unit (CPU) resources of the
RR and cause the RR unable to implement traffic forwarding. To improve the efficiency of route
transmission, disable BGP4+ route delivery to the IPv6 routing table on the RR to make the RR
dedicated to route transmission.
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:
ipv6-family [ unicast ]
The IPv6 unicast address family view is displayed.
Step 4 Run:
routing-table rib-only [ route-policy route-policy-name ]
BGP4+ route delivery to the IPv6 routing table is disabled.
The routes preferred by BGP4+ are delivered to the IPv6 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 IPv6 routing table, and routes not matching the
policy are delivered to the IPv6 routing table, with the route attributes unchanged.
----End
9.11.6 (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 BGP4+.
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
Issue 02 (2014-09-30)
NOTE
The routing-table rib-only command and the active-route-advertise command are mutually exclusive.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
9 BGP4+ Configuration

1099