B-VLAN to ECT algorithm mapping

For balanced traffic distribution, SPBM supports calculating one SPT for a set of B-VLANs by using different ECT algorithms. IEEE 802.1aq SPB provides 16 ECT algorithms. Each algorithm represents a set of tie-break rules. As a result, you can have up to 16 forwarding paths in an SPBM network.

Figure 8 shows two SPTs that are calculated by using two ECT algorithms.