Improved Hardware Deduplication
The Napatech hardware deduplication process has been improved and now defaults to using the beginning of the Inner Layer 3 Header to the end of the packet (minus the frame check sequence) to determine if packets are the same. The user may change the Napatech hardware deduplication mode by changing the “hwdeduplicationmode” property in omni.conf. The value must be one of the following:
0 = The entire packet contents (minus the frame check sequence) is used for deduplication - this is the old way
1 = The beginning of the Layer 3 Header to the end of the packet (minus the frame check sequence) is used for deduplication
2 = The beginning of the Inner Layer 3 Header to the end of the packet (minus the frame check sequence) is used for deduplication
NOTE: If a packet has only a single layer 3 header, it will be considered the layer 3 header and the inner layer 3 header. So, in this case methods 1 & 2 will result in the same outcome. Methods 1 & 2 may differ if a packet has multiple Layer 3 headers. Method 0 & 1 will include the MPLS/VLAN/VXLAN tags in determining duplicate packets.