Login
- Table of Contents
- Related Documents
-
| Title | Size | Download |
|---|---|---|
| 04-Failover group commands | 53.06 KB |
Failover group commands
bind
Use bind to assign a node to a failover group.
Use undo bind to remove a node from a failover group.
Syntax
In standalone mode:
bind slot slot-number cpu cpu-number { primary | secondary }
undo bind slot slot-number cpu cpu-number
In IRF mode:
bind chassis chassis-number slot slot-number cpu cpu-number { primary | secondary }
undo bind chassis chassis-number slot slot-number cpu cpu-number
Default
A failover group has no nodes.
Views
Failover group view
Predefined user roles
network-admin
context-admin
Parameters
slot slot-number: Specifies a card by its slot number. (In standalone mode.)
chassis chassis-number slot slot-number: Specifies a card on an IRF member device. The chassis-number argument represents the member ID of the IRF member device. The slot-number argument represents the slot number of the card. (In IRF mode.)
cpu cpu-number: Specifies a CPU by its number.
primary: Configures a node as the primary node.
secondary: Configures a node as the secondary node.
Usage guidelines
Each failover group contains a maximum of two nodes. One is the primary node, and the other is the secondary node. The primary node processes services and backs up service data to the secondary node. When the primary node fails, the secondary node takes over to avoid service interruption.
As a best practice, assign two nodes of similar performance on different cards to a failover group to ensure service continuity after a node switchover.
The primary node and the secondary node in a failover group cannot be the same node. Different failover groups cannot share the same primary node.
You can assign only existing nodes to a failover group. For a node that has been uninstalled from the device, you must also use the undo bind command to remove it from the failover group.
Examples
# (In IRF mode.) Configure the CPU on the card in the specified slot as the primary node in failover group group1.
<Sysname> system-view
[Sysname] failover group group1
[Sysname-failover-group-group1] bind chassis 1 slot 4 cpu 1 primary
display failover group
Use display failover group to display failover group information.
Syntax
display failover group [ group-name ]
Views
Any view
Predefined user roles
network-admin
network-operator
context-admin
context-operator
Parameters
group-name: Specifies a failover group by its name, a case-sensitive string of 1 to 63 characters. If you do not specify a failover group, this command displays information about all failover groups.
Examples
# (In IRF mode.) Display failover group information.
<Sysname> display failover group
Stateful failover group information:
Name Primary Secondary Active Status
group1 4.1 NA Primary
AutoBackupf0000021 4.1 NA Primary
Table 1 Command output
|
Field |
Description |
|
Name |
Name of the failover group. |
|
Primary |
The primary node in the failover group. The format of this field is chassis-number/slot-number.CPU-number. The chassis-number segment represents the member ID of the IRF member device. The slot-number segment represents the slot number of the card. The CPU-number segment represents the CPU number. If the card has only one CPU, the CPU number is not displayed. If no primary node is configured, this field displays NA. |
|
Secondary |
The secondary node in the failover group. The format of this field is chassis-number/slot-number.CPU-number. The chassis-number segment represents the member ID of the IRF member device. The slot-number segment represents the slot number of the card. The CPU-number segment represents the CPU number. If the card has only one CPU, the CPU number is not displayed. If no secondary node is configured, this field displays NA. |
|
Active Status |
The state of the failover group: · Primary—The primary node is processing services. · Secondary—The secondary node is processing services. · Initial—No node in the failover group is processing services. |
failover group
Use failover group to create a failover group and enter its view, or enter the view of an existing failover group.
Use undo failover group to delete a failover group.
Syntax
failover group group-name
undo failover group group-name
Default
Automatic failover groups prefixed with AutoBackup exist. No manual failover groups exist.
Views
System view
Predefined user roles
network-admin
context-admin
Parameters
group-name: Specifies a failover group by its name, a case-sensitive string of 1 to 63 characters.
Usage guidelines
A failover group backs up services (such as NAT and load balancing) between two CPUs to ensure high availability.
You can execute this command multiple times to create more failover groups.
Automatic failover groups prefixed with AutoBackup cannot be manually created or deleted.
Examples
# Create failover group group1 and enter its view.
<Sysname> system-view
[Sysname] failover group group1
[Sysname-failover-group-group1]
