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DNS Servers on different VLANS

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  • 1.  DNS Servers on different VLANS

    Posted Jul 18, 2022 05:27 AM
    I have an Aruba 3810. Do these not have ip helper commands for DNS on different vlans? If not anyone have any thoughts on setting this up? myccpay.com


  • 2.  RE: DNS Servers on different VLANS

    MVP GURU
    Posted Jul 18, 2022 09:21 AM
    Hi, if you need to reach NS lying on different VLANs is quite obvious that you need to provide a routing path to that NS (AFAIK there is no concept of DNS Helper Address as DHCP Helper Address)...so if a client belonging to a particular VLAN needs to reach a NS belonging to a different VLAN (or, better, belonging to a different network, local or non local) the host's requests need to be properly routed to that NS (generically speaking, if the NS belongs to a locally connected VLAN network segment this will happen by means of the routing between internal VLANs or, if the NS belongs to a non local network - say it's a public NS or a remote NS, as example - that will happen via routing through a Next Hop Gateway / Default Router when available).
    Original Message