ZyXEL p-2602r-d1a Manuale Utente

P-2602R/RL-DxA Series User’s Guide

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Chapter 7 WAN Setup

The following table describes the labels in this screen.  

Table 23   WAN Backup Setup

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 to 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.

Traffic Redirect 

Traffic redirect forwards traffic to a backup gateway when the ZyXEL Device cannot 

connect to the Internet.

Active Traffic 

Redirect

Select this check box to have the ZyXEL Device 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.

Metric

This field sets this route's priority among the routes the ZyXEL Device uses. 
The metric represents the "cost of transmission". A router determines the best route 

for transmission by choosing a path with the lowest "cost". RIP routing uses hop 

count as the measurement of cost, with a minimum of "1" for directly connected 

networks. The number must be between "1" and "15"; a number greater than "15" 

means the link is down. The smaller the number, the lower the "cost".

Backup Gateway

Type the IP address of your backup gateway in dotted decimal notation. The ZyXEL 

Device automatically forwards traffic to this IP address if the ZyXEL Device's 

Internet connection terminates. 

Apply

Click Apply to save the changes. 

Cancel

Click Cancel to begin configuring this screen afresh.