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S9700 Core Routing Switch
Configuration Guide - SPU
By default, no Layer 3 classifier is bound to a load balancing policy.
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6.4.14 Applying the Load Balancing Policy
A load balancing policy takes effect only after being applied.
Context
A load balancing policy can be applied to only XGE sub-interfaces or Eth-Trunk sub-interfaces
on the SPU.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number.subnumber
The sub-interface view is displayed.
Step 3 Run:
service load-balance policy policy-name
The load balancing policy is applied to an XGE sub-interface or an Eth-Trunk sub-interface.
After the load balancing policy is applied, the SPU takes actions defined in the load balancing
policy for the VLAN packets matching the Layer 3 classifier bound to the load balancing policy
on the XGE sub-interface.
By default, no load balancing policy is applied to an XGE sub-interface or an Eth-Trunk sub-
interface.
Step 4 (Optional) Run:
service load-balance arp-response nat address-group group-index
The NAT address pool is enabled to respond to ARP requests on the sub-interface.
By default, an NAT address pool is not enabled to respond to ARP requests on a sub-interface.
When the NAT address pool is used for source IP address translation, if the IP address of the
outbound interface of the SPU is in the same network segment as any IP address of the NAT
address pool, you need to run the service load-balance arp-response nat address-group group-
index command on the outbound interface. If the service load-balance arp-response nat
address-group group-index command is not used on the outbound sub-interface, the NAT
address pool cannot be enabled to respond to ARP requests on the outbound sub-interface.
Up to eight NAT address pools can be enabled to respond to ARP requests on a sub-interface.
----End
6.4.15 Checking the Configuration
After egress link load balancing is configured successfully, check whether the configurations
are correct and valid.
Issue 01 (2012-03-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6 Load Balancing Configuration
225
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