ZyXEL Communications P-2602HWLNI, Руководство пользователя, Страница: 115 / 496

Chapter 7 WAN Setup
P-2602HWLNI User’s Guide
115
Figure 57 WAN Backup Setup
The following table describes the labels in this screen.
Table 28 WAN Backup Setup
LABEL DESCRIPTION
Backup Type Select the method that the ZyXEL Device uses to check the DSL connection.
Select
DSL Link to have the ZyXEL Device check if the connection to the DSLAM
is up. Select ICMP to have the ZyXEL Device periodically ping the IP addresses
configured in the Check WAN IP Address fields.
Check WAN IP
Address1-3
Configure this field to test your ZyXEL Device's WAN accessibility. Type the IP
address of a reliable nearby computer (for example, your ISP's DNS server
address).
Note: 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 ZyXEL Device 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 ZyXEL Device 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 ZyXEL Device 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 ZyXEL Device 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 ZyXEL Device 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
ZyXEL Device 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.