ZyXEL Communications P-660HN-F1A, Руководство пользователя

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Chapter 6 WAN Setup
P-660HN-F1A User’s Guide
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The following table describes the labels in this screen.
Table 24 Network > Internet (WAN) > WAN Backup
LABEL DESCRIPTION
Backup Type Select the method that the P-660HN-F1A uses to check the DSL
connection.
Select DSL Link to have the P-660HN-F1A check if the connection
to the DSLAM is up. Select ICMP to have the P-660HN-F1A
periodically ping the IP addresses configured in the Check WAN
IP Address fields.
Check WAN IP
Address1-3 Configure this field to test your P-660HN-F1A's WAN accessibility.
Type the IP address of a reliable nearby computer (for example,
your ISP's DNS server address).
If you activate either traffic redirect or dial backup, you must
configure at least one IP address here.
When using a WAN backup connection, the P-660HN-F1A
periodically pings the addresses configured here and uses the
other WAN backup connection (if configured) if there is no
response.
Fail Tolerance Type the number of times (2 recommended) that your P-660HN-
F1A may ping the IP addresses configured in the Check WAN IP
Address field without getting a response before switching to a
WAN backup connection (or a different WAN backup connection).
Recovery Interval When the P-660HN-F1A is using a lower priority connection
(usually a WAN backup connection), it periodically checks whether
or not it can use a higher priority connection.
Type the number of seconds (30 recommended) for the P-660HN-
F1A to wait between checks. Allow more time if your destination
IP address handles lots of traffic.
Timeout Type the number of seconds (3 recommended) for your P-660HN-
F1A to wait for a ping response from one of the IP addresses in
the Check WAN IP Address field before timing out the request.
The WAN connection is considered "down" after the P-660HN-F1A
times out the number of times specified in the Fail Tolerance
field. Use a higher value in this field if your network is busy or
congested.
Traffic Redirect Traffic redirect forwards traffic to a backup gateway when the P-
660HN-F1A cannot connect to the Internet.
Active Traffic Redirect Select this check box to have the P-660HN-F1A use traffic redirect
if the normal WAN connection goes down.
Note: If you activate traffic redirect, you must configure at
least one Check WAN IP Address.