The network gateway or router IP address is also used during Hot Standby. Therefore, you must be able to ping this address from both the VP1 and VP2 VidyoPortals. For more information, see Configuring the Network Settings at the System Console.
If you don’t have a pool of existing IP addresses, you can purchase more from your ISP if you are using public IPs. In a NAT environment, you need one public IP address and three private IP addresses.