Some suggested requirements on the transport layer

[csapuntz@cisco.com]

To move the requirements discussion along, I would like to suggest
the following requirements and non-requirements for the transport
protocol on which iSCSI rests.

REQUIREMENTS

_ Ability to segment application-layer messages across multiple packets
_ Reliable delivery of application-layer messages
_ Congestion control
_ Fairly shares the network with other TCP streams
_ Latency comparable to TCP (in a comparable implementation)
_ Throughput comparable to TCP (in a comparable implementation)
_ Avoids IP fragmentation


NON-REQUIREMENTS but perhaps desirable:

_ RDMA abstraction
_ Unreliable or not-totally reliable delivery modes
_ In-order delivery of application-layer message
_ Fail-over across IP addresses
_ Minimal reassembly buffers
_ Load-balancing across IP addresses

-Costa