set the number of EBGP and IBGP routes to be used for load balancing. This allows VPN
traffic to be balanced among EBGP and IBGP routes.
Perform the following steps on a BGP switch:
1. Run:
system-view
The system view is displayed.
2. Run:
bgp as-number
The BGP view is displayed.
3. Run:
ipv4-family vpn-instance vpn-instance-name
The BGP-VPN instance view is displayed.
4. Run:
maximum load-balancing eibgp number
The maximum number of EBGP and IBGP routes is set for load balancing.
By default, the maximum number of EBGP and IBGP routes to be used for load
balancing is not set.
5. (Optional) Run:
load-balancing as-path-ignore
The switch is configured not to compare the AS-Path attributes of the routes to be
used for load balancing.
By default, the switch compares the AS-Path attributes of the routes to be used for
load balancing.
NOTE
l After the load-balancing as-path-ignore command is run, the switch no longer compares
the AS-Path attributes of the routes to be used for load balancing. Therefore, exercise
caution when using this command.
l The load-balancing as-path-ignore and bestroute as-path-ignore commands are
mutually exclusive.
----End
Checking the Configuration
After the BGP load balancing configurations are complete, you can run the following commands
to check the configurations.
l Run the display bgp routing-table [ network [ { mask | mask-length } [ longer-
prefixes ] ] ] command to check routing information in a BGP routing table.
l Run the display ip routing-table vpn-instance vpn-instance-name [ verbose ] command
to view the routing table of a VPN instance.
7.16 Configuring the BGP Next Hop Delayed Response
Configuring the BGP next hop delayed response can minimize traffic loss during route changes.
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 7 BGP Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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