RE: iFCP: Responses to David Black iFCP Technical review comment s

[Black_David@emc.com]

Say that with an upper case MUST for local emulation and a MUST
NOT for forwarding of loop primitives between iFCP gateways
and this issue is closed.

Thanks,
--David

> -----Original Message-----
> From: Charles Monia [mailto:cmonia@NishanSystems.com]
> Sent: Tuesday, May 14, 2002 8:01 PM
> To: ips@ece.cmu.edu
> Subject: RE: iFCP: Responses to David Black iFCP Technical review
> comment s 
> 
> 
> Hi:
> 
> I believe the rule for arbitrated loop support is that loop 
> primitives must
> be emulated by the local gateway.  The iFCP protocol does not 
> support the
> forwarding of loop control primitives to a remote gateway for 
> emulation.
> 
> Charles
> > -----Original Message-----
> > From: Black_David@emc.com [mailto:Black_David@emc.com]
> > Sent: Monday, May 13, 2002 11:52 PM
> > To: cmonia@NishanSystems.com; ips@ece.cmu.edu
> > Subject: RE: iFCP: Responses to David Black iFCP Technical review
> > comment s 
> > 
> > 
> > I think this is the crucial point:
> > 
> > > The primitives with the behavior you ascribe to LINIT are 
> > those such as
> > LIRP
> > > (Loop Initialization Report Position) and LILP (Loop 
> > Initialization Loop
> > > Position), which are frames serviced sequentially as they 
> > flow though
> > > NL_Ports on the loop. The loop primitive semantics may 
> > emulated locally by
> > > the gateway implementation and need not be propagated by 
> > iFCP.  How the
> > > gateway populates the loop with emulated NL_Ports is up to the
> > > implementation.
> > 
> > Yes, I did get confused about which primitive was which ...
> > The important thing to state here is that an iFCP 
> > implementation MUST NOT
> > forward LIRP, LILP and the like over IP.  The result is that 
> > an FC-AL loop
> > cannot include any iFCP inter-gateway links, and the topology 
> > discussion
> > of how iFCP participates in an FC fabric needs to reflect this.
> > 
> > The resolution of the "port behind multiple gateways" issue 
> looks ok.
> > 
> > Thanks,
> > --David
> > ---------------------------------------------------
> > David L. Black, Senior Technologist
> > EMC Corporation, 42 South St., Hopkinton, MA  01748
> > +1 (508) 249-6449 *NEW*      FAX: +1 (508) 497-8500
> > black_david@emc.com         Cell: +1 (978) 394-7754
> > ---------------------------------------------------
> > 
>