Re: ONE Linux DHCP Server + Multiple VLANs - Soluble problem?

From: Philippe WEILL (Philippe.Weill_at_aero.jussieu.fr)
Date: 07/28/05


Date: Thu, 28 Jul 2005 16:49:52 +0200


Ad wrote:
> Hi everyone. I hope some of you could help with this headache problem
> because I've really tried thousands of dhcp and interfaces configs
> without success why does WinNT4 manage handle it and not the latest
> linux kernel...
>
> --- NETWORK SETUP ---
>
> My company have 3 Cisco 3500XL switches and one Cisco Catalyst 4006
> router.
>
> Every switch act as a VTP Client to the Catalyst which acts as a VTP
> Server. My current configuration uses the old Windows NT4 as DHCP and
> DNS server and a linux box as a file server.
>
> I have configured 4 VLANs (100, 200, 300, 400), and my Windows NT4 box
> assigns DHCP adresses to the current VLANs with the rigth VLAN IP.
> Everything works fine. The servers are in VLAN 100 and the other office
> computers are in the others.
>
> Now, I setup a linux box (Debian 3.1 stable, customized 2.6.12 kernel
> with 802.1q as a module and VLAN support as static)
>
> I compiled vconfig tool from the kernel sources, I checked if the
> driver of my 2 NIC cards (3c509c) is correctly patched to handle VLAN
> Trunk. It's ok.
>
> I can add with vconfig new vlan interfaces on my linux box, it works
> without freezing the entire box. Until now, no problem.
>
> The DNS server is up and running, I can switch off the windows box and
> the linux box can take the job. But...
>
>
>

you could also use the cisco vlan router to forward dhcp request to your
server with something like

interface vlan 300
   ip address xxxx mask
   ip helper-address my-dhcp-server-ip
   no shutdown

Like this your server as only one ip address needed



Relevant Pages

  • Re: ONE Linux DHCP Server + Multiple VLANs - Soluble problem?
    ... because I've really tried thousands of dhcp and interfaces configs without success why does WinNT4 manage handle it and not the latest linux kernel... ... DNS server and a linux box as a file server. ... The servers are in VLAN 100 and the other office computers are in the others. ...
    (comp.dcom.sys.cisco)
  • ONE Linux DHCP Server + Multiple VLANs - Soluble problem?
    ... because I've really tried thousands of dhcp and interfaces configs ... assigns DHCP adresses to the current VLANs with the rigth VLAN IP. ... I can add with vconfig new vlan interfaces on my linux box, ... DHCP Configuration ...
    (comp.os.linux.networking)
  • ONE Linux DHCP Server + Multiple VLANs - Soluble problem?
    ... because I've really tried thousands of dhcp and interfaces configs ... assigns DHCP adresses to the current VLANs with the rigth VLAN IP. ... I can add with vconfig new vlan interfaces on my linux box, ... DHCP Configuration ...
    (comp.dcom.sys.cisco)
  • Re: My Network Places - Across WAN
    ... Are there issues I need to consider DHCP with multiple vlans? ... The wrkstn vlan is on a different vlan than my "new" AD dhcp server. ... then you may have to setup a DHCP Relay for each VLAN subnet. ...
    (microsoft.public.windows.server.active_directory)
  • Re: My Network Places - Across WAN
    ... Are there issues I need to consider DHCP with multiple vlans? ... The wrkstn vlan is on a different vlan than my "new" AD dhcp server. ... then you may have to setup a DHCP Relay for each VLAN subnet. ...
    (microsoft.public.windows.server.active_directory)