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Technology Stocks : The New QLogic (ANCR) -- Ignore unavailable to you. Want to Upgrade?

To: Craig Stevenson who wrote (14423)	2/17/1998 10:58:00 PM
From: trendmastr	Respond to of 29386

Tomorrow's IBD features a story on EMC in its "Company in the News" feature. AOL keyword - IBD. tm

To: Craig Stevenson who wrote (14423)	2/18/1998 4:34:00 PM
From: Roy Sardina	Read Replies (1) \| Respond to of 29386

Craig Depends on the system you are running. Jaycor has done an outstanding job with their SBus & PCI adaptors. The thing you have to worry about is are there just FCP (SCSI) drivers available for the HBA or are their IP drivers too. Several products cannot run IP over the HBA. That being Said the Adaptec HBA is very nice (copper only) As to what G2 is doing, we've announced our Hub product ($499/port LIST) and have our website up to see what it looks like. We are starting deliveries now, and the people who have tested it are happy with the cost performance they are getting. Roy Sardina ---------------------------- bfm --------------------------------- I realize this might be a subjective question, but who do you think makes the best Fibre Channel adapters? I've heard good things about Qlogic, but Adaptec is easier for me to get. The biggest factor for me is solid drivers for NetWare and NT. ---------------------------- efm ---------------------------------

To: Craig Stevenson who wrote (14423)	2/19/1998 12:05:00 AM
From: George Dawson	Read Replies (1) \| Respond to of 29386

Craig, Dr. Benner on class 4 service (explained as a discussion of the address identifiers): "x'FF FFF9': reserved for future usage as Quality-of Service Facilitator for future Class 4 Service. When implemented Extended Link Service commands sent to this address will be used to request a set of Quality-of-Service parameters for a Class 4 Virtual Service. A Class 4 Virtual Circuit is an extension of Class 1 Service which allows reservation of some fraction of the available link bandwidth and/or allows guarantee of maximum delivery latency, with Quality-of Service for these parameters negotiated between the requestor and the Quality of Service Facilitator." AND "Class 4 is a new Class of service, which is intended to incorporate the advantages of a Class 1 Dedicated Connection without reserving the entire link bandwidth and without preventing multiplexing over circuits with guaranteed service levels." He goes on to point out that a Class 4 connection is a typical bidirectional FC connection with QoS parameters to guarantee a percentage of link bandwidth and/or latency. There can be 254 simultaneously active multiplexed class 4 connections per N_Port. Frames are delivered in order at the negotiated rate." As you know Ancor offers intermix as an option to class 1. My understanding is that all elements of the connection need to support intermix or complicated things happen. It would seem to me that class 4 would be a natural extension of Ancor's technology - instead of muxing class 2 and 3 frames in intermix, reserving specific portions of available bandwidth for class 1. George D. Ref: Benner AF. Fibre Channel: Gigabit Communications and I/O for Computer Networks. McGraw-Hill, 1996.

To: Craig Stevenson who wrote (14423)	2/19/1998 12:18:00 AM
From: George Dawson	Respond to of 29386

Craig, Ran across this "old" post - looking for class 4 leads: www3.techstocks.com Also from the Interphase site: iphase.com The relevant excerpt: "Class 4 - Fractional Bandwidth (FC-PH-2) Class 4 is a connection oriented service but uses virtual connections and distributes the bandwidth among several destinations. All of the destinations have guaranteed access but not full bandwidth. Intermix - 1 and 2 - Class 2 traffic when Class 1 is idle."

To: Craig Stevenson who wrote (14423)	2/21/1998 2:22:00 PM
From: George Dawson	Read Replies (1) \| Respond to of 29386

Craig, I hope with some of the merger talk in the FC field that Ancor is looking to develop some new products with some of their current partners. I happened across some Litton products while browsing the Cisco video systems pages. They use these products in some of their real-time video applications: fibercom.com The complete line of products (for ATM) and also commercial and military applications based on FDDI can be found at: fibercom.com It would be interesting to think of what Ancor and Litton could produce in terms of a video on demand LAN/WAN using class 4 for both engineering and commercial purposes. George D.