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H8951-NA1 3G/4G Router User
Manual
5.3 Application program configuration
Based on years of customer experience for different applications, besides SNMP, DDNS,
H8951-NA Cellular Wi-Fi Router has developed many functions for wireless network
equipment, such as ICMP check, interface flow check function, M2M terminal
management function, task management function and waking on demand function.
5.3.1 ICMP check
There is fake link (can get IP after dialing, but cannot link to destination address). Usually
LCP is used to avoid this. Besides LCP, H8951-NA Cellular Wi-Fi Router can use another
more reliable checking way ICMP which check the link by PING. When abnormal link is
checked, the preset action will be executed to recover the link and systems quickly.
Initially ICMP is to check wireless link, and now it can be used to check VPN link and
supports simultaneous check in different rules. It supports maximum 10 ICMP check rules.
Step 1 Log-on WEB GUI of H8951-NA Cellular Wi-Fi Router.
Step 2 Click “applications > ICMP Check”.
Open “ICMP Check” tab.
Figure 5-15 ICMP Check tab
Step 3 “Add”, “Modify”, “Delete”, “Enable” “Disable” the function of “ICMP Check”.
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Add