Hi Bob,

thanks yes that makes sense.
That means my 50+ networks are NOT shared networks because thy are all in a different Vlan behind a relay host?
So i could live with simply subnet4 definitions without shared networks?

What worked until now in my test environment is one shared network with all my 50 reservation subnet in it and one dyn pool. That one Shared network has the relay option set so that everything need to come from that relay host. Similar to that example from Satish without the relay host. @Satish Thanks for you response

###
...
  "shared-networks": [

      {
        "name": "device-mgmt",
        "relay": {
                "ip-addresses": [ "10.3.1.3" ]
         },
        "subnet4": [
          {
            "id": 2,
...
###

I now understand it that way that this configuration is wrong because these networks are on separate VLAN and have nothing todo with each other.
There is no network expand an existing one.

Where is my misunderstanding?

---

Giso


Am 10.03.20 um 22:00 schrieb Bob Harold:

On Tue, Mar 10, 2020 at 9:15 AM Giso Kegel <[email protected] <mailto:[email protected]>> wrote:

    Hi Folks,

    I work with kea 1.6.1

    I really do not understand the concept or at leased the documentation
    regarding shared-networks.
    Do i need shared-networks or not?
    I do not have the problem that I have networks that grew out of there
    original definition.

    https://kea.readthedocs.io/en/latest/arm/dhcp4-srv.html

    lets say i have 50+ subnet4 that will ask the kea dhcp server over
    dhcp
    relayhosts (a swtich).

    All these subnet4 will hold only server that have a IP-reservation.

    Do i need multi shard networks?
    Can or do i have to put these 50+ networks in multi shared networks?
    Do i have to use different interfaces  for each shared network?

    I would be very thankful for some enlightenment.

    Best
    Giso


"Shared networks" are layer 3 subnets in the same layer 2 broadcast domain (physical wire or VLAN).  If the same router port has multiple subnets on it, and they are not 'tagged' differently, then they are "shared networks". Otherwise, they are not shared.
Does that help?

--
Bob Harold

--
Giso Kegel

Systems Engineer
Internal Support & Services (IONOS Cloud)

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