ZyXEL P-791R v2 Guia Do Utilizador

                                         

Traffic redirect scenario: 

•  Triangle route introduction 

A traffic route is a path for sending or receiving date packets between two 
Ethernet devices. Some companies have more than one alternate route to one 
or more ISPs

.

 If the LAN and ISP(s) are in the same subnet, the “triangle route” 

problem may occur. The steps below describe the “triangle route” problem. 

1. A computer on the LAN initiates a connection by sending out a SYN packet 
to a receiving server on the WAN. 

2. The P-791R v2 reroutes the SYN packet through Backup Gateway on the 
LAN to the WAN. 

3. The reply from WAN goes directly to the computer on the LAN without going 
through the P-791R v2. 

As a result, the P-791R v2 resets the connection, as the connection has not 
been acknowledged. 

“Triangle Route” Problem: 

                                     

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