load-balance extend-enhance enable

Function

The load-balance extend-enhance enable command enables multi-path PE load balancing.

The undo load-balance extend-enhance enable command disables multi-path PE load balancing.

This function is disabled by default.

Format

load-balance extend-enhance enable

undo load-balance extend-enhance enable

Parameters

None

Views

Slot view

Default Level

3: Management level

Task Name and Operations

Task Name	Operations
forwarding	write

Usage Guidelines

Usage Scenario

In a private route forwarding scenario on an L3VPN, PE by default balance traffic to the CE through a maximum of two paths.

To enable multi-path load balancing, run the load-balance extend-enhance enable command on PE.

Configuration Impact

If multi-path PE load balancing is manually configured and the load-balance extend-enhance enable command is not run, service traffic is balanced over a maximum of two paths.

Precautions

When user-to-network load-balancing traffic passes through multiple boards, enable multi-path load balancing on all such boards, which prevents load imbalance.
This command supports a maximum of 64 paths PE load balancing.
If multi-path PE load balancing is enabled on the upstream board but not on the downstream board, downstream traffic sampling may be incorrect.

In VS mode, this command is supported only by the admin VS.
This command takes effect in EVPN L3VPN over MPLS and EVPN 6vPE scenarios instead of L3VPN over SRv6 and EVPN L3VPN over SRv6 scenarios.

Example

# Enable multi-path PE load balancing.

<HUAWEI> system-view
[~HUAWEI] slot 1
[*HUAWEI-slot-1] load-balance extend-enhance enable