H3C Technologies H3C SecBlade LB Cards - Manual (Page 158)

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Interface backup configuration task list
Task Remarks
Configuring interface backup
Configuring active/standby mode
Optional
Associating an interface with a track entry
Configuring load balancing Optional
Configuring the delay timer for the backup function to take effect on system startup Optional
Configuring interface backup
You can configure interface backup through active/standby mode or association between an interface
and a track entry, but you cannot configure them at the same time.
Configuring active/standby mode
You can configure multiple standby interfaces for one active interface. The standby interfaces are
activated depending on their priority, with the highest priority being activated first.
To prevent frequent interface switchover as a result of interface instability, you can configure a switchover
delay. A standby interface then takes over only if the active interface remains down upon expiration of
the delay.
Follow these guidelines when you configure active/standby mode:
• To configure multiple standby interfaces for an active interface, execute the standby interface
command repeatedly.
• You can use the ip route-static command in system view to configure the routes for reaching a
destination network through the active interface and its standby interfaces. For more information
about the command, see Network Management Command Reference.
• If multiple standby interfaces have the same priority, when the active interface is down, the standby
interface configured first is selected.
To configure active/standby mode:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Specify a standby
interface for the active
interface.
standby interface
interface-type
interface-number [ priority ]
By default, no standby interface is specified
for the active interface.
4. Set switchover delays.
standby timer delay
enable-delay disable-delay
Optional.
Both thresholds are 0 by default, indicating
immediate switchover without delay.