PLANET CS-2001 - Manual (Page 98)

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3.1.2 Configuring the WAN Interface
Step 1. Go to Network > Interface and then click Port2’s Modify button. Select
WAN for Interface Type.
Step 2. Configure the Service Detection (ICMP & DNS):
 If ICMP is selected, enter the Alive Indicator Site IP.
（Figure 3-2）
 If DNS is selected, enter the DNS IP Address and the Domain Name.
（Figure 3-3）
 Enter the Minimum Interval.
Figure 3-2 ICMP Detection
Figure 3-3 DNS Detection
Important：
1. Keepalive Properties is used for detecting the WAN connection. Thus, the Alive Indicator
Site IP, the DNS IP Address and the Domain Name should be available to maintain the
accuracy of detection.