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    Layer 3 switches

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    • DashrenderD
      Dashrender
      last edited by

      I've been wondering this for a bit.

      If you have 2 layer 3 switches, and 2 VLANs, and you configure both switches to be aware of all VLANs (also assuming you don't have a master/slave switch setup), will each switch route between the VLANs themselves, or does all traffic have to go through one switch to route?

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      • scottalanmillerS
        scottalanmiller
        last edited by

        That would depend on the design of the switches. But generally I would expect routing to happen on each switch as needed.

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        • Rob DunnR
          Rob Dunn
          last edited by Rob Dunn

          I'm think Scott is correct. Since a Layer 3 switch provides routing, there should be no issues with VLAN1 communicating with VLAN2 on the same switch, even if they are plugged into each other. I would think the switch, being layer 3, would have a local static route so that inter-VLAN traffic could occur?

          That would make sense, even from a hypothetical approach - on a layer 3 switch, it really wouldn't make sense to forward traffic destined for a local device on a different VLAN to another device and then back. Of course, this is exactly how layer 2 switches have to do it, but you get my meaning!

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          • DashrenderD
            Dashrender
            last edited by

            Yeah I figured this was how it worked.
            Thanks

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