TL-WR843ND 300Mbps Wireless AP/Client Router User Guide
 
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Figure 4-81  Diagnostic Tools 
  Diagnostic Tool - Check the radio button to select one diagnostic too. 
  Ping - This diagnostic tool troubleshoots connectivity, reachability, and name resolution 
to a given host or gateway.   
  Traceroute - This diagnostic tool tests the performance of a connection. 
 
Note:
 
You can use ping/traceroute to test both numeric IP address or domain name. If 
pinging/tracerouting the IP address is successful, but pinging/tracerouting the domain name 
is not, you might have a name resolution problem. In this case, ensure that the domain name 
you are specifying can be resolved by using Domain Name System (DNS) queries. 
  IP Address/Domain Name - Type the destination IP address (such as 192.168.0.1) or 
Domain name (such as http://www.tp-link.com). 
  Pings Coun
t - The number of Ping packets for a Ping connection.   
  Ping Packet Size - The size of Ping packet. 
  Ping Timeout - Set the waiting time for the reply of each Ping packet. If there is no reply in 
the specified time, the connection is overtime.   
  Traceroute Max TTL - The max number of hops for a Traceroute connection. 
Click Start to check the connectivity of the Internet.   
The Diagnostic Results page displays the result of diagnosis.