Chapter 2 Advanced Routing for FortiOS 5.0 : Border Gateway Protocol (BGP) : Dual-homed BGP example : Testing this configuration : Testing network connectivity
  
Testing network connectivity
A common first step in testing a new network topology is to test if you can reach the internet and other locations as you expect you should. If not, you may be prevented be cabling issues, software or other issues.
The easiest way to test connections is to use ping, once you ensure that all the FortiGate unit’s interfaces and ISP routers have ping support enabled. Also ensure that the security policies allow ping through the firewall.
Connections to test in this example are the internal network to ISP1’s router or the internet, and the same for ISP2. If you can connect on the external side of the Fortinet unit, try to ping the internal network. Those three tests should prove your basic network connections are working.
 
Once you have completed testing the network connectivity, turn off ping support on the external interfaces for additional security.