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Network Design with Layer 3 Switch and UTM

PMIAdmin

Our network will consist of 5 access switches connected to a layer 3 core switch connected to a SG430. We will have several VLANS consisting of computers, VoIP phones, security cameras and card access readers. Total users will be around 100. We are fully cloud and no longer have any servers so no DHCP or DNS server. It appears my options are to use the core switch as layer 2 and let the SG430 handle the routing, DHCP and DNS or use the core switch as layer 3 and let the switch handle DHCP. Does anyone have a recommendation as to which setup will give the best performance? Am I missing any other option?



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    Depends on the brand of your switches. Better ones (i.e. HPE) have a routing engine in ASIC which is capable to route in wirespeed (even at 10/40G).
    Routing on the UTM might be fast (depending on model) but will be software anyways. Useful only if you want to enforce Firewall rules between the subnets.
    DHCP / DNS is better manageable on the UTM, you just have to configure DHCP relay agents on the switch for the other VLANs.

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  • 0

    Depends on the brand of your switches. Better ones (i.e. HPE) have a routing engine in ASIC which is capable to route in wirespeed (even at 10/40G).
    Routing on the UTM might be fast (depending on model) but will be software anyways. Useful only if you want to enforce Firewall rules between the subnets.
    DHCP / DNS is better manageable on the UTM, you just have to configure DHCP relay agents on the switch for the other VLANs.

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