HP VPN Firewall Appliances High Availability Configuration Guide

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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 multiple times.
• 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:
Ste
p
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.
Associating an interface with a track entry
You can associate a standby interface with a track entry to enable the interface to monitor the state of the
active interface through the track entry and change the backup state of the interface accordingly.
• If the state of the track entry is positive, the link connecting the active interface is normal and the
standby interface stays in the backup state.
• If the state of the track entry is negative, the link connecting the active interface is not functioning
correctly. The standby interface becomes the active interface to transmit data.
• When you associate an interface with a track entry, if the track entry is invalid, the interface keeps
its forwarding state. After your configuration, if the state of the track entry changes to invalid, the
standby interface will become the active interface.
Follow these guidelines when you associate an interface with a track entry:
• One interface can be associated with one track entry only. If you execute the standby track
command multiple times, the latter configuration overwrites the previous one.
• The track entry associated with an interface can be one you have not created yet. After you create
a track entry with the track command, the association takes effect.
• For more information about the track module, see "Configuring Track."
To associate an interface with a track entry: