Re: DHCP relay, superscope and laptops



OK, so to simplify...

I have two subnets A and B, one on each VLAN, connected through a L3 switch
which acts as a DHCP relay to my single DHCP server on subnet A.

A DHCP request from clients on subnet A are no problem as they are local on
the DHCP's server subnet.

A DHCP request from clients on subnet B, pass through the L3 Switch, which
relays them to my DHCP server on subnet A.

How do I then set up those two subents on the DHCP server? Do I just have to
seperate scopes and everyone is happy ever after ?

In the article I read then I needed to declare a superscope for subnet B for
the DHCP server to be able to handle it correctly. Is that not the case ?

Palli



"Herb Martin" <news@xxxxxxxxxxxxxx> wrote in message
news:OOlLAsYUFHA.2124@xxxxxxxxxxxxxxxxxxxxxxx
> >
>> "Pall Bjornsson" <palli@xxxxxxx> wrote in message
>> news:%23d2p7CNUFHA.2304@xxxxxxxxxxxxxxxxxxxxxxx
>> > > Superscopes are only needed when the DHCP server offers
>> > > addresses to a MULTINET.
>> >
>> > In my case I have a L3 Switch that splits my network in a few distinct
>> VLANs
>>
>> Same here, we use an HP 5300XL
>>
>> > I was under the impression that if you had such a setup, you MUST have
>> > superscope(s) set up, right ?
>>
>> No. No Superscopes. VLANs don't change anything, L3 Switches don't
> change
>> anything.
>
>
> What Philip said -- just think of the routing (L3) between
> different VLANS as passing through a router.
>
> If effectively creates separate segments/cables -- the advantage it
> you the admin get to define these logical segments/cables.
>
> Once done, it is just like a segment with subnet on each one.
>
>
> You would only need a superscope if you had multiple subnets
> on a single segment/VLAN (that is called a "multinet".) You
> need a superscope if the DHCP server will hand out addresses
> to multiple subnets on such a Multinet.
>
>
>
>


.



Relevant Pages

  • Re: Cant ping by name outside of subnet
    ... It really doesn't matter whether this is a Switch with separate ... VLANs or Routerwith separate physically subnet (except ... If both/ALL DNS servers work with NSLookup, ...
    (microsoft.public.win2000.dns)
  • Re: Adding a second domain.
    ... if I can create a VLAN on one of the blades of our switch then I can ... domain can have it's own dhcp server and independently authenticate their own ... that you need a separate subnet for each domain you add into your ...
    (microsoft.public.win2000.networking)
  • RE: 2 x DC, 2 sites and NT4 servers same domain HELP
    ... with regards to the dhcp and dns on a second ... site, i understand i can install dhcp on a different subnet, but would it be ... a good idea to install dns on this server too, or should i keep it to only ...
    (microsoft.public.windows.server.migration)
  • Re: Multiple IPs on single NIC and multiple VLANs
    ... VLANs on the same NIC ... IP address per VLAN via DHCP ... you have to connect these 2 NIC cards to different subnet range / 2 ...
    (microsoft.public.win32.programmer.networks)
  • Re: DHCP relay, superscope and laptops
    ... each of which has it's own subnet. ... The Switch then acts as a DHCP relay, ... relaying DHCP requests to a central DHCP server, ... What we did as a workaround, was that we created one superscope for each ...
    (microsoft.public.windows.server.networking)