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    Networking clear up question

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    • bbigford
      bbigford last edited by bbigford

      Likely, I missed something. There have been a couple different people either using a term at work that is not correct, or I am wrong here.

      Me: "Is that SAN FC or ethernet?"
      Person 1: "It is iSCSI."
      Me: "Ok, so the physical interface is ethernet then...? I need to know what card is in it."
      Person 1: "It is iSCSI..."
      Me: "Right, that is the protocol the servers connect to it by. I need to know... nevermind, I'll just look myself... Glad I looked, it's FC."

      Received an email from another person about something completely unrelated to the SAN discussion... "the new iSCSI switches are NOT trunked to the rest of the network." ... so, ethernet switches?

      Am I missing something here? There's no physical 'iSCSI' I thought... it's an IP based networking protocol, not an actual physical interface.

      travisdh1 1 Reply Last reply Reply Quote 5
      • Deleted74295
        Deleted74295 Banned last edited by Deleted74295

        Correct. I suspect mis-communication.

        You can have iSCSI over Fibre or Ethernet, The protocol is always iSCSI but the interface can and does change.

        1 Reply Last reply Reply Quote 3
        • travisdh1
          travisdh1 @bbigford last edited by

          @BBigford Sounds to me like the other people are missing something.

          Reid Cooper 1 Reply Last reply Reply Quote 1
          • scottalanmiller
            scottalanmiller last edited by

            iSCSI is not physical at all. It's a Layer 7 protocol that rides on TCP/IP. So similar to HTTP, SMTP or XMPP.

            1 Reply Last reply Reply Quote 3
            • bbigford
              bbigford last edited by

              Haha k, thanks. Glad that was cleared up. I was thinking I had missed something for years.

              1 Reply Last reply Reply Quote 0
              • bbigford
                bbigford last edited by

                There were so many people using the term to describe physical interfaces, I was doubting myself.

                dafyre scottalanmiller 2 Replies Last reply Reply Quote 0
                • dafyre
                  dafyre @bbigford last edited by

                  @BBigford said in Networking clear up question:

                  There were so many people using the term to describe physical interfaces, I was doubting myself.

                  Physical interfaces or the switch that was only going to be used for iSCSI?

                  Just like you have FC switches...Are they regular switches that are only used for FibreChannel or are they switches that can only connect to FibreChannel cards?

                  scottalanmiller 1 Reply Last reply Reply Quote 0
                  • scottalanmiller
                    scottalanmiller @bbigford last edited by

                    @BBigford said in Networking clear up question:

                    There were so many people using the term to describe physical interfaces, I was doubting myself.

                    That's a bit worrisome.

                    1 Reply Last reply Reply Quote 1
                    • Reid Cooper
                      Reid Cooper last edited by

                      There is such a thing as an iSCSI card, but it is still Ethernet.

                      1 Reply Last reply Reply Quote 0
                      • Reid Cooper
                        Reid Cooper @travisdh1 last edited by

                        @travisdh1 said in Networking clear up question:

                        @BBigford Sounds to me like the other people are missing something.

                        Missing a LOT I would say.

                        1 Reply Last reply Reply Quote 1
                        • StrongBad
                          StrongBad last edited by

                          What did they have to say when you explained the difference between a protocol and a physical connector?

                          bbigford 1 Reply Last reply Reply Quote 1
                          • Mike Davis
                            Mike Davis last edited by

                            It easy to see how the average 1 man shop could be confused. I've heard vendors (mostly in the VMware days) say "How are you connected, FC or iSCSI?"

                            scottalanmiller 1 Reply Last reply Reply Quote 0
                            • Grey
                              Grey last edited by

                              spchlss.gif

                              1 Reply Last reply Reply Quote 0
                              • scottalanmiller
                                scottalanmiller @Mike Davis last edited by

                                @Mike-Davis said in Networking clear up question:

                                It easy to see how the average 1 man shop could be confused. I've heard vendors (mostly in the VMware days) say "How are you connected, FC or iSCSI?"

                                Well of course. Because those are the options. The only SAN protocols of any merit are those two. There are goofy niche things like ATAoE and FCoE or switched SAS but in the real world there is only FC and iSCSI to pick from.

                                1 Reply Last reply Reply Quote 2
                                • bbigford
                                  bbigford @StrongBad last edited by

                                  @StrongBad said in Networking clear up question:

                                  What did they have to say when you explained the difference between a protocol and a physical connector?

                                  Acted like they didn't hear what I said. lol

                                  scottalanmiller 1 Reply Last reply Reply Quote 2
                                  • scottalanmiller
                                    scottalanmiller @bbigford last edited by

                                    @BBigford said in Networking clear up question:

                                    @StrongBad said in Networking clear up question:

                                    What did they have to say when you explained the difference between a protocol and a physical connector?

                                    Acted like they didn't hear what I said. lol

                                    Probably what they did the last 100 times someone pointed out how clueless they are. Only a trend of burying their heads in the sand would allow them to think that they could state something like that out loud and not sound like idiots.

                                    1 Reply Last reply Reply Quote 1
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