Re: OSA

Ron

Take a look at the attached text - use a non-proportional font - which shows that, using traditional level 3 support, QDIO cannot be used with SNA *natively*. You need Enterprise Extender in order to run SNA using QDIO because QDIO only runs IP natively.

This so-called level 2 support came in after I got my experience with OSAs but I'm going to assume it won't help you - maybe someone else can comment.

The text is a version of the document from the IBM redbooks site with URL:

http://www.redbooks.ibm.com/abstracts/tips0088.html

It was published in 2002 so I guess it's missing some additions to the OSA range. However, the principles almost certainly apply.

-

Incidentally, while I have your attention. I recently posted regarding "good practice" when posting on IBM-MAIN. We generally expect that, when a new thread is started, the title is not prefixed with "Re:" - short for "regarding" or possibly for Latin scholars "concerning", that is, the current post refers to an earlier post forming part of an ongoing thread. In fact, I didn't cover this point because, as far as I have noticed, you are the only one who continues threads "out of the blue". <g>

Another incidentally: OSA issues normally get aired on IBMTCP-L although it probably doesn't matter since the population of those who attend to IBMTCP-L seem to be a subset of those who attend to IBM-MAIN.

Chris Mason

---

OSA-Express modes of operation

This Technote shows the supported modes for the OSA-Express2 and OSA-Express features

Depending on the OSA-Express2 or OSA-Express features you are using, two operating modes are supported. The following table gives an overview of the Queued Direct I/O (QDIO) and non-QDIO modes of operation based on the supported features.

Supported modes of operation

Feature CHPID type SNA TCP/IP 3270 OSA/SF required

OSA-Express2 10 GbE LR OSD (QDIO) (ab) x

OSA-Express2 GbE OSD (QDIO) (ab) x

OSA-Express GbE OSD (QDIO) (ab) x

OSA-Express 1000BASE-T OSC (3270 data stream) x
OSD (QDIO) (ab) x
OSE (non-QDIO) x x x

OSA-Express FENET OSD (QDIO) (a) x
OSE (non-QDIO) x x x

OSA-Express 155 ATM LANE OSD (QDIO) (a) x x
OSE (non-QDIO) x x x

OSA-Express 155 ATM Native OSE (non-QDIO) x x x

OSA-Express Token Ring OSD (QDIO) (a) x
OSE (non-QDIO) x x x

a. SNA over IP with the use of Enterprise Extender or TN3270
b. Layer 2 support allows for non-IP protocols, such as SNA and NetBOIS

----- Original Message ----- From: "Ron Wells" <RWells@xxxxxxxxxxxx>
Newsgroups: bit.listserv.ibm-main
To: <IBM-MAIN@xxxxxxxxxxx>
Sent: Tuesday, July 31, 2007 5:10 PM
Subject: Re: OSA


My understanding that a OSA Express tokenring can run SNA either non-QDIO
or QDIO
Is this correct...also the devices are gen'd as OSE's device types....the
Gig OSA's we have are OSD ... this sound correct..?

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to listserv@xxxxxxxxxxx with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html
.