Calculate Data guard required Bandwidth
The formula to calculate Bandwidth
Let us assume the redo rate is a 500 KB/sec.(500*1024=512000)
Required bandwidth = ((Redo rate bytes per sec. / 0.7) * 8) / 1,000,000
bandwidth in Mbps Required bandwidth = ((512000/0.7) * 8) /1,000,000
Required bandwidth = 4.85 Mbps
In CASE WE HAVE RAC DATABASE then
Required bandwidth = 4.85 Mbps * no of RAC nodes
https://forums.oracle.com/thread/2280928
http://yvrk1973.blogspot.in/2013/09/calculation-for-network-bandwidth.html