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Dell PowerStore PowerStore T and Q Networking Guide for Storage Services

No direct interconnect between the switches

If the ToR switches cannot be interconnected directly, then use highly reliable Layer 2 (L2) upstream links.

ToR switch connectivity through the upstream links require redundant, high-speed connections.

Using L2 (Ethernet level) upstream links without an MC-LAG connection to connect the ToR switches is an acceptable alternative to a direct interconnect for PowerStore deployments.

When using highly reliable upstream links for ToR switch interconnectivity, the first 2-ports in the PowerStore appliance 4-port card (system bond) reverts into an active/passive state.

Figure 1. ToR switches with no direct interconnect
Logical diagram of PowerStore networking when the ToR switches are not interconnected.
ConnectionState
solid blue lineActive
dashed blue linePassive

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