Les Mikesell wrote:
> On Fri, Dec 2, 2011 at 12:59 PM, <m.roth@xxxxxxxxx> wrote:
>>
>>>>>>>> And we have our DHCP give out IP by MAC addresses, so they're
>>>>>>>> effectively static.
>>>>>>>
>>>>>>> If you've done that, you might as well put them in DNS. Linux
>>>>>>> tools
>>>> <snip>
>>>>>> Um, no can do: we don't run the DNS here on campus (a US gov't
>>>>>> federal agency), we have blocks of IPs assigned to us. Within
>>>>>> our division, we control the horizontal, we control the
vertical.... <g>
>>>>>
>>>>> If you are giving out DHCP addresses, you are almost certainly giving
>>>>> out DNS server addresses, and you can point that to one or more that
>>>>> you control (probably on the same box(es) as the dhcp service). And
>>>>
>>>> Les, you're missing the point: we are not *supposed* to be running a
>>>> DNS server. There's another division that does that, the same one that
>>>> assigns us the blocks of IP addresses. Please don't confuse me with
>>>> the OP.
>>>
>>> I don't even understand what that means. Is there a mandate to do
>>> things wrong? Would someone fire you if you used windows for your
>>> DHCP service and it was a version that had AD running as a DNS service
>>> too?
>>
>> Ok, you *have* confused me with the OP. We run almost *no* Windows here,
>> at least on the servers or workstations we support in this division.
>> They do actual science here, and Windows...rotfl! running scientific
>> compute clusters? To do what, figure out the first 100 decimal places of
>> pi in a month?
>
> So nobody ever needs a name/ip mapping to the nodes anyway?
We do map. We even have a master hosts file for the division. But DNS is
not our purview.
>
>> And running another DHCP server on the network is *not* a Good Thing,
>> and I feel as though we'd get a lot of grief if we did. Rules and
>> regulations, forget "corporate" rules.
>
> I thought you said you _were_ running a DHCP server. And the part
We are. In fact, each cluster head also runs a DHCP server, for all their
nodes.
> that confuses me is why anyone would split the addressing and naming
> authority into something that doesn't match the topology. That is, if
> you are working together with whoever runs the DNS I'd expect the
> name/IP mapping to be coordinated, probably with a central DHCP as
> well, or if your network management is delegated to you, then you'd do
> both independently. But if you are running something unusual that
> doesn't care about names or DNS then it doesn't matter...
We have a subnet that we control. We do the IPs. We give names, then
register them with the group that does the whole campus, and they update
the DNS.
mark
>
> --
> Les Mikesell
> lesmikesell@xxxxxxxxx
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