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6 Appendix A: RDMA Provider IRD/ORD Negotiation

The SMB2 RDMA Transport Protocol requires that the underlying RDMA Providers support the mutual dynamic establishment of Incoming RDMA Read Depth / Outgoing RDMA Read Depth (IRD/ORD) values at connection time. This processing is described in the relevant standards for the applicable RDMA lower layers, [RFC6581] and [IBARCH].

For iWARP providers that do not support [RFC6581] negotiation, the following exchange is recommended.