Как настроить автоматическое переключение на резервный канал в DSR?

Как настроить автоматическое переключение на резервный канал в DSR?
v Configuration Examples
How to set up Auto-Rollover on the DSR
WAN Modes
The WAN mode settings allows configuration of one or more internet
interfaces called WAN ports. The User can configure the device to use a single
dedicated port for all the external WAN traffic or use both the WANs available
on the device for inbound/outbound traffic.
When both WAN ports are
configured and active, they can be used concurrently to share the internet
traffic load or can be used to provide redundancy in the event of one of the
links going down.
The following actors participate in these use cases:
v User – the administrator who takes various operational actions on the
v Device –DSR series
v Host - machine behind the Device used to access management interface.
v WAN host – Internet host.
@ Click Save Settings to apply configuration changes or Don’t Save Settings to
discard any changes and revert to the previously saved settings.
Rollover with Multiple WAN ports
(1)Go to setup->internet
>internet setting
setting->wan1 settings->
> wan1
(2) Go to setup->intern
>internet setting->wan2 settings->
> wan2
(3) Go to setup->internet
>internet setting
setting->wan mode
In this example,wan1 is my default route.wan2 is my backup route.
Auto-Rollover success
Use case #
This use case describes WAN auto-rollover mode of operation and its
configuration details.
User, Device, Host, WAN host
Both WAN interfaces are configured and operational on the Device, and
the mode of WAN operation selected is Auto-Rollover using WAN port.
The auto-rollover feature allows the User to use a secondary ISP link for
backup purposes that becomes active when failure is detected on the
primary ISP link. When in this mode, the Device checks the connection of
the primary link at regular intervals to assess its status.
1. WAN failure detection method: Failure on a WAN link implies that it is
no longer available for internet traffic.
There are several options
available to detect failure on the primary WAN link:
a. DNS lookup: The User can configure the Device to use either the
DNS server IP address configured in WAN settings or specify
custom DNS server IP address.
Failure to access theses servers
during regular intervals will point to a link failure.
b. Ping these IP addresses: The user selects this option to detect
WAN failure by pinging an IP address.
c. Retry Interval is: The frequency the Device will use to detect a link
failure is defined here.
Upon reaching the retry limit, the WAN
link is considered to be failed.
This increments the failover
2. Failover after configured number of attempts: User enters the desired
number of failure detection attempts after which the Device will
switch to the secondary configured WAN connection.
The failover
counter used in 1c above is compared to this threshold and is reset to
0 when the secondary WAN link is made active (i.e. the link rollover is
1. User should ensure that the secondary WAN port is configured and
active before selecting auto-rollover mode of operation.
2. When using ping as the WAN failure detection method, the configured
IP address must respond to ping requests from the Device.
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