Stratix 5700 and NAT Layer 3

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  • #20716
    jbutts2841jbutts2841
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    Is it possible to set up multiple Translations from different subnets on the same switch. For example I have 2 identical machines on one subnet and 2 identical machines on another subnet. Is it possible to achieve communication to Kepware Server also on a different subnet utilizing one switch as a router and the other for NAT. attached is an image of topology as well as a NAT Network Table to provide transparency.

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    #20719
    jbutts2841jbutts2841
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    I meant to segregate the The PLC’s since they are being translated to the same subnet by assigning different gateways. Refer to the revised NAT-TABLE

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    #20739
    StixoffireKen S
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    I believe in Stratix 5700 your VLANs will allow you to do this – by routing the IP onto that VLAN , and the translation from there.
    NAT – Network Address Translation – this is the process of changing the IP Address for the Packets – You have two machines (or systems) with identical IP Addresses – and you want them to be available to your kepware server , and it looks like you desire them to be on the 172.29.1 network.
    So when a packet is traveling from 192.168.0.3  there are two possible routes for the same IP so your normal IP to IP address scheme does not work but your external IP Address routed to Specific VLAN will allow you to do it since the external IP address is unique and your internal VLAN is unique – it is really the VLAN you need to route and translate the IP Address on that VLAN. google with duckduckgo for VLAN NATTING – ROUTING

    Your Kepware is already on 172 network.

    Machines A & B are on 192.168.1 Network.
    Machines C & D are on 192.168.0 Network.
    These PLC are on a Segregated Network – but the same network A & B then also C & D – so this is the issue – but you have made them Unique Networks by the VLAN they are on . So they are really different networks in theory . I am not completely familiar with all the ins and outs of the stratix 5700 – but it is basically Cisco under the hood .. so you can look at how it is done in Cisco and use that as a guide.

    You have done the right thing by assigning a different VLAN to those duplicated networks ..

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