Ha Backup Configuration Scenarios - Huawei NetEngine80E Configuration Manual - Reliability

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
Procedure
Step 1 Run the display service-ha global-information hot-backup-state command to check the HA
hot standby status.
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Example
Run the display service-ha global-information hot-backup-state command to check the HA
hot standby status.
<HUAWEI> display service-ha global-information hot-backup-state
service-ha hot-backup enable

12.4 HA Backup Configuration Scenarios

12.4.1 HA Backup Between Service Boards on a Single CGN Device
Before You Start
Before configuring HA backup between service boards on a single CGN device, you need to
familiarize yourself with the usage scenario, complete the pre-configuration tasks, and obtain
the required data.
Applicable Environment
When a CGN device has multiple service boards, active and standby service boards can be
configured on the CGN device for backup. The standby service board synchronizes data from
the active service board so that it can take over services immediately when the active service
board fails. Services are not interrupted during the switchover, and users do not know the fault.
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Pre-configuration Tasks
Before configuring HA backup between service boards on a single CGN device, complete the
following tasks:
Issue 02 (2014-09-30)
When a CGN device has multiple slots, multiple service boards can be configured. The
CGN device can be configured with 1:1 backup of service boards when the number of users
is not large. The active service board processes services, and the standby service board does
not work. The active service board backs up user entries, session entries, and address pool
entries to the standby service board. When faults occur on the active service board, the
standby service board takes over the services.
When a CGN device has multiple slots, multiple service boards can be configured. The
CGN device can be configured with 1+1 backup of service boards when the number of
users is large. The active and standby service boards process their own services, and back
up user entries, session entries, and address pool entries to the peer end. When faults occur
on one service board, the other service board takes over services from the faulty service
boards and also processes its own services.
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12 CGN Backing Up HA Configuration
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