1 Reply Latest reply on Nov 10, 2015 12:54 AM by jayh

    1234 Layer 3 switch routing question

    mmstech New Member

      I'll start by saying I'm not a network admin, just thrown into this on.

      I have a 1234 L3 lite switch that I'm trying to use to get to subnets to talk together.  Here is what I have

       

      Sub A

      192.168.101.0/24

      Adtran 1224 L2 switch

      192.168.101.9 gateway 192.168.101.1 (ASA)

       

      Sub B

      172.21.11.0/24

      Adtran 1234 L2 switch

      172.21.11.9 gateway 172.21.11.3

       

      Router

      Adtran 1234 L3 Lite switch

      172.21.11.3 gateway 192.168.101.1 (Same ASA)

       

      I need to use the router to allow both networks to see each other using the 16 static routes.  the 172.21.11.0 network is being built and has never connected to the Internet yet.  I have Googled but nothing yet founds has this setup.  So let me know if there is more hardware that needs to be bought, or what the routing table might look like or whatever.  I'm stumped at this point.

       

      Thanks

        • Re: 1234 Layer 3 switch routing question
          jayh Hall_of_Fame

          mmstech wrote:

           

          I'll start by saying I'm not a network admin, just thrown into this on.

          I have a 1234 L3 lite switch that I'm trying to use to get to subnets to talk together.  Here is what I have

           

          Sub A

          192.168.101.0/24

          Adtran 1224 L2 switch

          192.168.101.9 gateway 192.168.101.1 (ASA)

           

          Sub B

          172.21.11.0/24

          Adtran 1234 L2 switch

          172.21.11.9 gateway 172.21.11.3

           

          Router

          Adtran 1234 L3 Lite switch

          172.21.11.3 gateway 192.168.101.1 (Same ASA)

           

          I need to use the router to allow both networks to see each other using the 16 static routes.  the 172.21.11.0 network is being built and has never connected to the Internet yet.  I have Googled but nothing yet founds has this setup.  So let me know if there is more hardware that needs to be bought, or what the routing table might look like or whatever.  I'm stumped at this point.

           

          Thanks

          The 1234 switch should have one port in as an access port in a  VLAN connected to the 1224 switch. This VLAN interface should be configured with an IP address in the 192.168.101.x subnet. The default route on the 1234 switch should be the ASA of 192.168.101.1. (ip route 0.0.0.0 0.0.0.0 192.168.101.1)

           

          Another VLAN on the 1234 switch should have an IP of something in the 172.21.11.x subnet. I'm not sure if your intent is to use .9 or .3 here, but .1 might be more appropriate.

           

          Hosts in 172.21.11.x should have their default gateway pointed to the address of the 172.21.11.x address of the 1234 switch and connected to ports on that switch configured as access ports in that VLAN.

           

          The ASA needs a static route to 172.21.11.0/24 pointed to the 192.168.101.x address you assign to the 1234 switch.

           

          The IP address on the 1224 switch doesn't really matter as it isn't participating in IP routing.