load-balance hash-arithmetic (Remote backup profile view)

Function

The load-balance hash-arithmetic command configures a hash algorithm on an interface board for load balancing based on odd and even MAC addresses in dual-device hot backup scenarios.

The undo load-balance hash-arithmetic command cancels the configuration.

By default, no hash algorithm for load balancing based on odd and even MAC addresses is configured.

This command is supported only on the NetEngine 8000 F1A.

Format

load-balance hash-arithmetic { arithmetic1 | arithmetic2 } [ hash-fields mac offset mac-offset ]

undo load-balance hash-arithmetic [ { arithmetic1 | arithmetic2 } [ hash-fields mac offset mac-offset ] ]

Parameters

Parameter	Description	Value
arithmetic1	The first hash-arithmetic.	-
arithmetic2	The second hash-arithmetic.	-
hash-fields	Sets the hash fields of Load-balance.	-
mac	Sets the hash fields of Load-balance of mac mode.	-
offset mac-offset	Specifies the offset value of a user MAC address.	The value is an integer that ranges from 1 to 5 .

Views

Remote backup profile view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
rui	execute

Usage Guidelines

Usage Scenario

Load balancing is implemented based on a hash algorithm.

In dual-device hot backup scenarios where load balancing is performed based on odd and even MAC addresses, if terminals with odd and even MAC addresses are unevenly distributed on the master and backup devices, run the load-balance hash-arithmetic command to enable a specified hash algorithm so that users can be evenly distributed on the master and backup devices.

Because this algorithm performs load balancing based on MAC addresses, traffic cannot be evenly distributed for users with one-to-many mapping between one MAC address and multiple sessions enabled.

Prerequisites

The configurations on the master and backup devices are the same.

Users have been logged out.

Configuration Impact

If the load-balance hash-arithmetic command is run more than once, the latest configuration overrides the previous one. After the command is run, hash calculation is performed based on the new hash algorithm.

Example

# Configure the hash algorithm as CRC16b on the interface board.

<HUAWEI> system-view
[*HUAWEI] remote-backup-profile p1
[*HUAWEI-rm-backup-prf-p1] load-balance hash-arithmetic arithmetic1