dhcp-users Digest, Vol 30, Issue 29

Wed Apr 27 17:51:19 UTC 2011

Thank you Simon Hobson!

all it's working

2011/4/27  <dhcp-users-request at lists.isc.org>:
> Send dhcp-users mailing list submissions to
>        dhcp-users at lists.isc.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
>        https://lists.isc.org/mailman/listinfo/dhcp-users
> or, via email, send a message with subject or body 'help' to
>        dhcp-users-request at lists.isc.org
>
> You can reach the person managing the list at
>        dhcp-users-owner at lists.isc.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of dhcp-users digest..."
>
>
> Today's Topics:
>
>   1. Re: more than one ip range (Simon Hobson)
>   2. Mise ?  (Flex Banana)
>   3. Dynamic DNS Update depuis mes cartes ethernet (Flex Banana)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 27 Apr 2011 08:02:01 +0100
> From: Simon Hobson <dhcp1 at thehobsons.co.uk>
> Subject: Re: more than one ip range
> To: Users of ISC DHCP <dhcp-users at lists.isc.org>
> Message-ID: <p06240822c9dd6e0aef36 at simon.thehobsons.co.uk>
> Content-Type: text/plain; charset="iso-8859-1" ; format="flowed"
>
> Usu?rio do Sistema wrote:
>>hi everyone, I'm in an project of network segmentation in some VLANS.
>>so...I need set my DHCP server distribute more than one IP range.
>>
>>for exemplo, currently my server DHCP is inside to VLAN what is VLAN 1
>>( 172.18.0.0/16 ) it's distributes only on this VLAN 1.
>>
>>I wish that it distributes other ip ranges for other VLANs but on same
>>NIC ( Interface 172.18.0.1/16  - VLAN 1 )
>>
>>for exemplo, Users from VLAN 2 ( network 10.10.10.0/24 ) will be ask
>>IP on server DHCP interface that has IP 172.18.0.1
>>
>>in my switch structure all it's ready....I have switch Cisco and I've
>>configuration ip helper address in my vlan 1.
>>
>>how can I reach this scenery....more than one ip range on my server DHCP ??
>
> This is very basis DHCP stuff.
>
> You need three things for this to work :
> 1) On the "remote" network you need a relay agent
> - this picks up the local broadcasts, fills in a
> field to identify the network to the DHCP server,
> and forwards it. It sounds like you already have
> this in your switch.
>
> 2) You configure each subnet in the server, like this :
>
> subnet 172.18.0.0 ...
>   ...
> }
> subnet 10.10.10.0 ...
>   ...
> }
>
> That's all there is to it - it doesn't matter
> which subnets are locally attached and which are
> remote, the server will work that out.
>
> 3) You need appropriate router(s) and link(s)
> that will allow unicast traffic between the
> clients on the remote networks and the server -
> this is needed to allow the clients to renew
> leases which is done by unicast rather than
> broadcast.
>
> With these in place you'll find that it all happens automagically.
>
> In a bit more detail, the key is that in the DHCP
> discovery and request packets there is a field
> called GI Addr (Gateway Interface Address). In
> requests from clients on a local network this
> will be blank and the server detects the correct
> subnet according to the interface the packet was
> received on. For remote networks, the relay agent
> fills in it's local IP address on the remote
> network and the server uses that both to
> determine the right subnet, and to return the
> packet to the gateway so it can broadcast it to
> the client.
>
> It is well worth getting hold of the book "The
> DHCP Handboook" by Ralph Droms and Ted Lemon.
> It's very well written and explains all the
> details clearly - including some historical stuff
> that explains why it's done the way it is.
>
> --
> Simon Hobson
>
> Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
> author Gladys Hobson. Novels - poetry - short stories - ideal as
> Christmas stocking fillers. Some available as e-books.
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 27 Apr 2011 13:35:31 +0200
> From: Flex Banana <flex.banana at bluewin.ch>
> Subject: Mise ?
> To: bind-users at isc.org, Users of ISC DHCP <dhcp-users at lists.isc.org>
> Message-ID: <1FD98BF0-1D91-419B-BECA-9958295DE766 at bluewin.ch>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Bonjour,
>
> J'aimerai mettre ? jour mes zones via le m?chanisme Dynamic DNS Update en fonction des machines qui se connectent sur mes diff?rentes cartes r?seau.
>
> Mon serveur est ?quip? de trois cartes ethernet avec diff?rents subnet qui ne sont pas accessibles les uns des autres et j'ai besoin que les zones soient automatiquement mises ? jour par les clients par l'adresse IP de la carte ethernet d'o? le DHCP est distribu?.
>
> En quelque sort j'ai besoin que l'adresse IP ci-dessous corresponde ? l'adresse de la carte ethernet duquelle le DHCP est distribu?:
>
>        zone trucmuche.ch. { primary 10.1.1.100; key cl?_serveur; }
>
> J'utilise bind 9.7.3 avec dhcpd 4.2.1 sous openSUSE 11.4
>
> Merci infiniment et meilleures salutations
> Banana
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <https://lists.isc.org/pipermail/dhcp-users/attachments/20110427/767e5bdf/attachment-0001.html>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 27 Apr 2011 13:36:17 +0200
> From: Flex Banana <flex.banana at bluewin.ch>
> Subject: Dynamic DNS Update depuis mes cartes ethernet
> To: bind-users at isc.org, Users of ISC DHCP <dhcp-users at lists.isc.org>
> Message-ID: <C7868AAC-6840-4670-8490-92DBE907D176 at bluewin.ch>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Bonjour,
>
> J'aimerai mettre ? jour mes zones via le m?chanisme Dynamic DNS Update en fonction des machines qui se connectent sur mes diff?rentes cartes r?seau.
>
> Mon serveur est ?quip? de trois cartes ethernet avec diff?rents subnet qui ne sont pas accessibles les uns des autres et j'ai besoin que les zones soient automatiquement mises ? jour par les clients par l'adresse IP de la carte ethernet d'o? le DHCP est distribu?.
>
> En quelque sort j'ai besoin que l'adresse IP ci-dessous corresponde ? l'adresse de la carte ethernet duquelle le DHCP est distribu?:
>
>        zone trucmuche.ch. { primary 10.1.1.100; key cl?_serveur; }
>
> J'utilise bind 9.7.3 avec dhcpd 4.2.1 sous openSUSE 11.4
>
> Merci infiniment et meilleures salutations
> Banana
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <https://lists.isc.org/pipermail/dhcp-users/attachments/20110427/56b871f8/attachment-0001.html>
>
> ------------------------------
>
> _______________________________________________
> dhcp-users mailing list
> dhcp-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users
>
> End of dhcp-users Digest, Vol 30, Issue 29
> ******************************************
>