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IPoIB has two modes, Datagram and Connected modes. Connected Mode is prefered and is the equivalent to jumbo frames in Ethernet. It increases the packet size from 2k for linux up to 64k. I agree with dba, check your disk benchmarks to make sure the bottleneck is not there. dba are you getting that 2000mb with SRP or IPoIB?. This document specifies a method for encapsulating and transmitting IPv4/IPv6 and Address Resolution Protocol (ARP) packets over InfiniBand (IB). It describes the link-layer address to be used when resolving the IP addresses in IP over InfiniBand (IPoIB) subnets. Since I don't want to run performance tests on a production system I am wondering: Are there published performance comparisons for IPoIB vs. RDMA/InfiniBand. For instance, could I expect bandwidth/latency gains from switching away from IPoIB in the orders of magniute of either 10%, 50%, or 100%, say? What could be expected? IPOIB is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms. IPOIB - What does IPOIB stand for? The Free Dictionary. RFC 4391 IP over InfiniBand (IPoIB) April 2006 32-bit Cyclic Redundancy Check (CRC) .Though multicasting support is optional in IB fabrics, IPoIB architecture requires the participating components to support it. Figure 8. IPoIB file remove performance. Conclusions and Future Work. Over the different generations of the solution, the NSS-HA solution has under gone many hardware and software updates to continually offer high availability, higher performance, and larger storage capacity.