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Today's Topics:
1. Re: can dhcpd keep working when encountering a syntax error
(Pat Dery)
2. Re: Different hardware options based on subnet (Simon Hobson)
3. Re: Different hardware options based on subnet
(glenn.satch...@uniq.com.au)
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Message: 1
Date: Thu, 3 Sep 2020 07:31:31 -0500 (CDT)
From: Pat Dery <patrick.for...@derytelecom.ca>
To: dhcp-users@lists.isc.org
Subject: Re: can dhcpd keep working when encountering a syntax error
Message-ID: <1599136291652-0.p...@n4.nabble.com>
Content-Type: text/plain; charset=us-ascii
good idea
thanks
pat
--
Sent from: http://isc-dhcp-users.2343191.n4.nabble.com/
------------------------------
Message: 2
Date: Thu, 3 Sep 2020 14:41:34 +0100
From: Simon Hobson <dh...@thehobsons.co.uk>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Different hardware options based on subnet
Message-ID: <8e3b0bb5-5143-4573-991e-0bce94ef9...@thehobsons.co.uk>
Content-Type: text/plain; charset=us-ascii
Ricardo Stella <ste...@rider.edu> wrote:
> Is the problem that the definition in the global section of the config trumps
> whatever is defined inside a subnet?
Normally, definitions in a lower scope (e.g. in a subnet) override options made
at a higher level (e.g. at the global level). So (for example) you can set your
DNS servers globally and override them for specific subnets or pools.
However, class definitions and host definitions are always global even if
declared within a lower scope. This is one that can catch people out.
As classes are "special" in this respect, I could imagine there being similar
oddities with option inheritance in cases like yours. But I don't recall this
particular setup being asked before, and I'm not familiar with implementation
details - I guess if you can read code (I assume it's in C) then you could
spend the time (possibly a lot of it) working out how this particular scenario
works.
Simon
------------------------------
Message: 3
Date: Fri, 04 Sep 2020 09:24:18 +1000
From: glenn.satch...@uniq.com.au
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Different hardware options based on subnet
Message-ID: <8c8f8e048d879c2a2c28ff8f4a70b...@uniq.com.au>
Content-Type: text/plain; charset=US-ASCII; format=flowed
Hi Ricardo,
How about omitting the allow class option in the specific pool, and add
all the required info? eg something like this?
pool {
# allow members of "i2004-clients";
range ... ;
option nortel-specific-info =
"Nortel-i2004-A,10.2.0.10:4100,1,15;10.2.0.10:4100,1,15.";
]
regards,
-glenn
On 2020-09-03 23:41, Simon Hobson wrote:
> Ricardo Stella <ste...@rider.edu> wrote:
>
>> Is the problem that the definition in the global section of the config
>> trumps whatever is defined inside a subnet?
>
> Normally, definitions in a lower scope (e.g. in a subnet) override
> options made at a higher level (e.g. at the global level). So (for
> example) you can set your DNS servers globally and override them for
> specific subnets or pools.
>
> However, class definitions and host definitions are always global even
> if declared within a lower scope. This is one that can catch people
> out.
> As classes are "special" in this respect, I could imagine there being
> similar oddities with option inheritance in cases like yours. But I
> don't recall this particular setup being asked before, and I'm not
> familiar with implementation details - I guess if you can read code (I
> assume it's in C) then you could spend the time (possibly a lot of it)
> working out how this particular scenario works.
>
> Simon
>
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