Flow Remapping When a Port is Added to the Aggregator

When a port is added to the aggregator, some flows must be moved to the newly added port in order to maintain even (or approximately even) distribution. With Resilient Hashing configured, the flows moved to the newly added port will come evenly (or approximately evenly) from the flows previously mapped to each of the former member ports.

Example Remapping of Flows

Table 1. Remapping Flows Example
Port # of table entries before addition # of table entries after addition Change in # of flows on port
1 32 29 -3
2 32 29 -3
3 32 29 -3
4 32 29 -3
5 32 28 -4
6 32 28 -4
7 32 28 -4
8 32 28 -4
9 0 28 -4
Total Entries 256 256 +28

With Resilient Hashing configured, the minimum number of flows are moved in order to maintain even distribution.