R0106-HP MSR Router Series High Availability Command Reference(V7)

4
Predefined user roles
network-admin
Parameters
up-delay: Specifies the number of seconds that the primary or backup interface must wait before it can
come up. The value range is 1 to 65535 seconds.
down-delay: Specifies the number of seconds that the active primary or backup interface must wait
before it is set to down state. The value range is 1 to 65535 seconds.
Usage guidelines
Before you can use this command on an interface, you must specify at least one backup interface for the
interface.
The switchover delay mechanism prevents link flapping from causing frequent interface switchovers.
When the link of the active interface fails, the interface state does not change immediately. Instead, a
down delay timer starts. If the link recovers before the timer expires, the interface state does not change.
If the link is still down when the timer expires, the interface state changes to down.
Examples
# Specify Serial 2/1/1 as a backup of Serial 2/1/0, and set both up and down delay timers to 10
seconds.
<Sysname> system-view
[Sysname] interface serial 2/1/0
[Sysname-Serial2/1/0] backup interface serial 2/1/1
[Sysname-Serial2/1/0] backup timer delay 10 10
Related commands
backup interface
backup timer flow-check
Use backup timer flow-check to configure the traffic polling interval on a primary interface.
Use undo backup timer flow-check to restore the default.
Syntax
backup timer flow-check interval
undo backup timer flow-check
Default
The traffic polling interval is 30 seconds.
Views
Interface view
Predefined user roles
network-admin
Parameters
interval: Specifies a traffic polling interval in the range of 30 to 600 seconds.