Re: DISCUSS: draft-ietf-ipoib-connected-mode

[Cc'ing the IPoIB list for more comments.]

>Date: Thu, 02 Mar 2006 16:23:53 +0100
>From: Brian E Carpenter <brc <at> zurich.ibm.com>

>
>This certainly a classical problem with LFNs and at least
>in some cases IB may look like an LFN. I agree with Allison

Not sure about the "L" part. IB is high-bandwidth but "low-latency".

>that this needs to be stated better. (In fact, people using
>this sort of technology for real firehose applications are
>often TCP-averse for this reason.)
>
>    Brian
>
>Allison Mankin wrote:
>> Discuss:
>> The IB folks won't be surprised by my popping up with this :)

That's right. It's been overdue :)

>> 
>>   The RC mode of InfiniBand guarantees in-order delivery of
>>   packets. Every message transmitted over the RC connection is
>>   broken into physical MTU sized packets by the RC connection. If
>>   any packet is lost, it is retransmitted until the complete
>>   message is exchanged. Therefore, there is a possibility of a
>>   reliable transport layer, such as TCP, retransmitting due to a