On Thursday, 05/03/2007 at 11:03 ZE2, Shimon Lebowitz <[EMAIL PROTECTED]> wrote: > I have an OSA-E with an SNA address (defined using OSA/SF). > I do *not* have any vague idea what 'LLC' is, that's just what I was > told the router makes out of the incoming DLSW, and gives > to the 2216. > > Can OSA-E "talk" LLC? or is another translation of some > sort required between it and the OSA SNA port?
LLC (Link Level Control) is the abstract name of a theoretical (but sometimes real) layer 2 API that the layer 3 network driver would use to send and receive adapter-specific constructs (ethernet frames). That is, TCP/IP uses it to construct IP ethernet frames. VTAM uses it to construct SNA ethernet frames. If you have used OSA/SF to configure one of the OSE ports for SNA, then VM/VTAM will drive that as an XCA PU, just as it does the 2216. (Some people refer to this as "LSA mode"....as opposed to "LCS mode" used by TCP/IP). Alan Altmark z/VM Development IBM Endicott
