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- Table of Contents
-
- 08-System Volume
- 00-System Volume Organization
- 01-Login Configuration
- 02-Basic System Configuration
- 03-Device Management Configuration
- 04-File System Management Configuration
- 05-SNMP Configuration
- 06-RMON Configuration
- 07-MAC Address Table Management Configuration
- 08-System Maintaining and Debugging Configuration
- 09-Information Center Configuration
- 10-PoE Configuration
- 11-Track Configuration
- 12-NQA Configuration
- 13-NTP Configuration
- 14-VRRP Configuration
- 15-HA Configuration
- 16-Hotfix Configuration
- 17-GR Overview
- Related Documents
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| Title | Size | Download |
|---|---|---|
| 15-HA Configuration | 41.99 KB |
When configuring HA, go to these sections for information you are interested in:
l Manually Configuring Switchover Between the AMB and SMB
l Displaying and Maintaining HA
Introduction to HA
High Availability (HA) feature can be used to achieve a higher degree of system availability. Devices supporting HA are normally equipped with two routing and switching process units (RSPU for short), with one being the active main board (AMB for short) that works under master mode and the other being the standby main board (SMB for short) that works under slave mode. With the synchronization function, SMB can work under the same system configuration.
HA functions in this way: If an AMB fails or is plugged out, the SMB will automatically switch over to function as an AMB (this process is referred to as switchover hereafter), ensuring that the device works properly.
l You cannot execute any command on the SMB, and you need to perform configurations through the command line interface on the AMB, which will synchronize the configurations to the SMB.
l For the H3C S7500E series Ethernet switches, you must ensure that the software versions of the AMB and SMB are consistent; you must reboot the whole device after software version upgrade, and you must not upgrade software by performing the AMB and SMB switchover.
HA Configuration Task List
|
Task |
Remarks |
|
Optional |
|
|
Optional |
Restarting the SMB
If the SMB fails, or is to being upgraded, you can restart the SMB to validate the newest version or configuration. However, you need to check the consistency of the versions of the AMB and SMB. If they are not consistent, you need to configure to ignore version check of the SMB.
|
To do… |
Use the command… |
Remarks |
|
Enter system view |
system-view |
— |
|
Manually restart the SMB |
ha slave restart |
Required |
After the SMB has restarted, the AMB will perform initial synchronization on the SMB. During this process, the system does not respond to your input. After the initial synchronization is completed, you can execute all the configuration commands on the AMB and the AMB and SMB will keep a real-time synchronization process, meaning your configuration on the AMB will be copied to the SMB to ensure the consistency of the current configuration of the AMB and SMB.
Manually Configuring Switchover Between the AMB and SMB
|
To do… |
Use the command… |
Remarks |
|
Enter system view |
system-view |
— |
|
Enable the manual switchover between the AMB and SMB |
slave switchover { disable | enable } |
Optional Enabled by default |
|
Manually configure switchover between the AMB and SMB |
slave switchover |
Required |
The original AMB will be restarted when AMB and SMB switchover is performed. Therefore, ensure the consistency of the software version of the AMB and SMB before performing AMB and SMB switchover; if their software version is not consistent, you need to configure to ignore version check of the SMB first.
Displaying and Maintaining HA
|
To do… |
Use the command… |
Remarks |
|
Display the switchover state |
display switchover state [ slot-id ] |
Available in any view |
