HP StorageWorks 2/140 FW 08.01.00 McDATA Products in a SAN Environment Plannin - Page 241
OpenTrunking, Insistent Domain_ID.
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OpenTrunking Physical Planning Considerations 5 • Switch binding - This portion of the feature allows only specified devices and fabric elements to connect to specified director or fabric switch ports. • Enterprise Fabric Mode - Although Enterprise Fabric Mode is not a keyed feature, it is required for SANtegrity Binding operation. Enterprise Fabric Mode also enables the following parameters: - Rerouting delay. - Domain RSCNs. - Insistent Domain_ID. For additional information about the feature, refer to SANtegrity Binding. OpenTrunking is a feature that optimizes ISL bandwidth use in a fabric environment. The feature monitors Fibre Channel data rates (congestion and BB_Credit starvation) through multiple ISLs, dynamically applies a Dijkstra FSPF networking algorithm to calculate the optimum path between fabric elements, and load balances Fibre Channel traffic (from congested links to uncongested links) accordingly. OpenTrunking is shown in Figure 5-8. Server 1 Server 2 TM Director A Trunk ISL 1 ISL 2 ISL 1 TM ISL 2 Director B Server 3 Figure 5-8 OpenTrunking Storage 1 Storage 2 Physical Planning Considerations 5-37