RE: FW: [Ips] Recent comments about FCoE and iSCSI

"John Hufferd" <jhufferd@Brocade.COM> Thu, 26 April 2007 21:25 UTC

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Subject: RE: FW: [Ips] Recent comments about FCoE and iSCSI
Date: Thu, 26 Apr 2007 14:25:18 -0700
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Thread-Topic: FW: [Ips] Recent comments about FCoE and iSCSI
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From: "John Hufferd" <jhufferd@Brocade.COM>
To: <brown_David1@emc.com>, <ips@ietf.org>
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David,
The first part of you question has perhaps a different answer than you
"In other words" part.

The first answer is it communicates the same way a FC adapter
communicates with iSCSI based storage --- via FC to iSCSI gateways.

The answer you maybe asking (in your Other Words part) is that it is
possible for a smart NIC that supports maybe iSCSI, TOE, NIC, and even
perhaps iWARP, to have another interface that supports FCoE.  The FCoE
part would send FC frames through the same NIC that was used by the
iSCSI part, but the FCoE frames would be headed (without a gateway) to a
different place then the iSCSI frames were headed. 

.
.
.
John L Hufferd
Sr. Executive Director of Technology
jhufferd@brocade.com
Office Phone: (408) 333-5244; eFAX: (408) 904-4688
Alt Office Phone: (408) 997-6136; Cell: (408) 627-9606
  

-----Original Message-----
From: brown_David1@emc.com [mailto:brown_David1@emc.com] 
Sent: Thursday, April 26, 2007 11:49 AM
To: ips@ietf.org
Subject: RE: FW: [Ips] Recent comments about FCoE and iSCSI

How would an FCoE-based initiator communicate with iSCSI-based storage? 

In other words, can the same host adapter be used for FCoE connections
and iSCSI sessions, and if so, would the performance be similar?

thanks,
dj
________________________________

	From: John Hufferd [mailto:jhufferd@Brocade.COM] 
	Sent: Thursday, April 26, 2007 12:52 AM
	To: Sandars, Ken; Eddy Quicksall; Julian Satran
	Cc: ips@ietf.org
	Subject: RE: FW: [Ips] Recent comments about FCoE and iSCSI
	
	

	Ken,

	The term FCoE has as its primary component FC.  Consider the
possibility that the DCE Link from the Host connects to a switch/device
that is able to deal with the FC part of the FCoE.

	 

	.

	.

	.

	John L Hufferd

	Sr. Executive Director of Technology

	jhufferd@brocade.com <mailto:jhufferd@brocade.com> 

	Office Phone: (408) 333-5244; eFAX: (408) 904-4688

	Alt Office Phone: (408) 997-6136; Cell: (408) 627-9606

	

	________________________________

		From: Sandars, Ken [mailto:ken_sandars@adaptec.com] 
	Sent: Wednesday, April 25, 2007 6:41 PM
	To: John Hufferd; Eddy Quicksall; Julian Satran
	Cc: ips@ietf.org
	Subject: RE: FW: [Ips] Recent comments about FCoE and iSCSI

	 

	Hey John,

	 

	[Hufferd] Many servers are asking for an evolutionary way to
combine their Networking connections from the Server.  The customers I
have dealt with do NOT want to rip out FC, they want to provide a single
Link for transport of all networking needs, including storage, exiting
their servers.

	
	I'm not sure what you are saying here. Are you saying servers
should have a single type of physical network connection, presumably
ethernet? How does that align with not wanting to rip out FC?

	 

	Thanks

	Ken



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