SRP - Discovery and Login

John Tyndall jtyndall at
Thu Sep 27 12:02:25 PDT 2001

* From the T10 Reflector (t10 at, posted by:
* "John Tyndall" <jtyndall at>

I have been trying to figure out how a host accomplishes discovery and
login on an Infiniband fabric. I can find the IOController and the
Service ID of the SRP service, but when I go to build the REQ and the
SRP_LOGIN_REQ to request a connection how do I set the Target Port ID? I
can build the First 8 bytes of the Target Port ID from the GUID of the
IOController which is known, but I have found no way to find or
calculate the 8 bytes of extension. There seems to be no restriction on
what the extension can be. Is this a hole in SRP or IB or am I just
missing something?

John Tyndall
Crossroads Systems Inc.
Email  : jtyndall at
Phone : 512-928-7282

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