One Server, two interfaces

Thu Mar 13 18:27:23 UTC 2008

Paul:
Thanks so much for the reply. Your previous email did the trick. I  
simply modified my /etc/rc.conf in the following manner;

# dhcpd shiz
dhcpd_enable="YES"
dhcpd_ifaces="dc0 rl0"

Just FYI, my system is a FreeBSD 6.3 with GENERIC kernel configuration.

Thanks again.

A

On 13 Mar 2008, at 16:37, Paul Bertain wrote:

> I think my message got messed up in translation!
>
> The DHCPARGS section did not come out right:
>
> DHCPDARGSÜ0 rl0
>
> should have an equals sign then dc then 0 (like below but without
> spaces on either side of the equals sign):
>
> DHCPDARGS = dc0 rl0
>
> Paul
>
> On Mar 13, 2008, at 9:23 AM, Paul Bertain wrote:
>
>> Hi Alan,
>> dhcpd is not listening on rl0, which is why it is not sending
>> responses to that domain.
>>
>> One solution is to setup a helper-address on the router that services
>> the 192.168.1.0/24 network that points to the dc0 address.  In Cisco-
>> ese:
>>
>> int vlan<VLAN of 192.168.1.0)
>> ip helper-address <ip of dc0>
>>
>> This would forward DHCP requests for the 192.168.1.0/24 network to  
>> the
>> dc0 interface.  Another alternative is to add the rl0 interface to  
>> the
>> startup scripts.  Depending on your OS, it may be something like this
>> (for Fedora):
>>
>> DHCPDARGSÜ0
>>
>> and change it to
>>
>> DHCPDARGSÜ0 rl0
>>
>> Paul
>>
>> On Mar 13, 2008, at 7:47 AM, Alan Neville wrote:
>>
>>> Jeff:
>>> Apologies for the delay in getting back to you, but I have attempted
>>> adding another scope as suggested to my /usr/local/etc/dhcpd.conf,
>>> but to no avail. The following is a copy of my configuration file;
>>>
>>> #option domain-name "example.com";
>>> option domain-name-servers 213.94.190.194, 213.94.190.236;
>>> option subnet-mask 255.255.255.0;
>>>
>>> default-lease-time 3600;
>>> max-lease-time 86400;
>>> ddns-update-style none;
>>>
>>> # rl0 (unhealthy)
>>> subnet 192.168.1.0 netmask 255.255.255.0 {
>>> range 192.168.1.10 192.168.1.200;
>>> option routers 192.168.1.1;
>>> }
>>>
>>> # dc0 (healthy)
>>> subnet 192.168.100.0 netmask 255.255.255.0 {
>>> range 192.168.100.10 192.168.100.200;
>>> option routers 192.168.100.1;
>>> }
>>>
>>> When I plug a system into the "healthy" side, i get a .100 address.
>>> This is working fine. However, I never get a .1 address when plugged
>>> into the "unhealthy" side. I have added teh scope and restarted teh
>>> dhcpd service by issuing /usr/local/etc/rc.d/isc-dhcpd restart. The
>>> following is a copy of the output;
>>>
>>> # /usr/local/etc/rc.d/isc-dhcpd restart
>>> Stopping dhcpd.
>>> Starting dhcpd.
>>> Internet Systems Consortium DHCP Server V3.0.5
>>> Copyright 2004-2006 Internet Systems Consortium.
>>> All rights reserved.
>>> For info, please visit http://www.isc.org/sw/dhcp/
>>> Wrote 2 leases to leases file.
>>> Listening on BPF/dc0/00:04:e2:5c:91:dc/192.168.100/24
>>> Sending on   BPF/dc0/00:04:e2:5c:91:dc/192.168.100/24
>>> Sending on   Socket/fallback/fallback-net.
>>>
>>> I don't see any problems? Any suggestions?
>>>
>>> Many Thanks,
>>>
>>> A
>>>
>>> On 8 Mar 2008, at 04:39, Jeff Sadowski wrote:
>>>
>>>> yes just add another subnet block you will see dhcpd say the
>>>> interfaces it is starting on.
>>>> you can start it in a number of ways.
>>>>
>>>> one way is just to add another scope. another is to have a
>>>> completely
>>>> different config file and have another instance of dhcpd for each
>>>> nic.
>>>> If you don't have an address that falls in any of the scopes dhcpd
>>>> will complain and tell you
>>>>
>>>> with a different config file you will need to pass dhcpd the config
>>>> file option look in the man page.
>>>> There are plenty of examples in the man page
>>>>
>>>> I think you put the nic at the end of the command line
>>>>
>>>> On Fri, Mar 7, 2008 at 4:47 PM, Alan Neville
>>>> <neville.alan at gmail.com> wrote:
>>>>> Jeff:
>>>>> I don't quite understand. How does it "figure it out"?  
>>>>> Currently, I
>>>>> have dhcpd working for one of the interfaces. The following is a
>>>>> copy
>>>>> of my dhcpd.conf. Should I just add another subnet declaration
>>>>> block?
>>>>>
>>>>> --- snip, snip ---
>>>>>
>>>>> option domain-name-servers 213.94.190.194, 213.94.190.236;
>>>>> option subnet-mask 255.255.255.0;
>>>>>
>>>>> default-lease-time 3600;
>>>>> max-lease-time 86400;
>>>>> ddns-update-style none;
>>>>>
>>>>> # dc0 interface
>>>>> subnet 192.168.100.0 netmask 255.255.255.0 {
>>>>> range 192.168.100.10 192.168.100.200;
>>>>> option routers 192.168.100.1;
>>>>> }
>>>>>
>>>>> --- snip, snip ---
>>>>>
>>>>> Thanks,
>>>>>
>>>>> A
>>>>>
>>>>>
>>>>> On 7 Mar 2008, at 21:31, Jeff Sadowski wrote:
>>>>>
>>>>>> dhcpd figures it out based on the ip addresses assigned to those
>>>>>> nodes.
>>>>>>
>>>>>> On 3/7/08, Alan Neville <neville.alan at gmail.com> wrote:
>>>>>>> Hello,
>>>>>>>
>>>>>>> I'm currently setting up a FreeBSD server for a project which
>>>>>>> has two
>>>>>>> interfaces (rl0 and dc0) both connected to different VLANs
>>>>>>> (192.168.1.0/24 and 192.168.100.0/24, respectively). I have been
>>>>>>> reading through the server installation instructions as per the
>>>>>>> FreeBSD Handbook (http://www.freebsd.org/doc/en_US.ISO8859-1/
>>>>>>> books/
>>>>>>> handbook/network-dhcp.html), however, I can't seem to find much
>>>>>>> re
>>>>>>> configuring the server to hand out 192.168.1.0/24 addresses
>>>>>>> through
>>>>>>> the rl0 interface and 192.168.100.0/24 through the dc0 from the
>>>>>>> one
>>>>>>> set up. Could someone provide me with a sample dhcp.conf which
>>>>>>> covers
>>>>>>> this type of installation?
>>>>>>>
>>>>>>> Many Thanks,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ---
>>>>>>> Alan Neville
>>>>>>> alan.neville3 at mail.dcu.ie
>>>>>>> CAIS3 / 55626234
>>>>>>> ---
>>>>>>> "Shúil do bothar, scríobh do scéal.."
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ---
>>>>> Alan Neville
>>>>> alan.neville3 at mail.dcu.ie
>>>>> CAIS3 / 55626234
>>>>> ---
>>>>> "Shúil do bothar, scríobh do scéal.."
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>>>
>>>
>>> ---
>>> Alan Neville
>>> alan.neville3 at mail.dcu.ie
>>> CAIS3 / 55626234
>>> ---
>>> "Siúl do bhóthar, scríobh do scéal"
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>

---
Alan Neville
alan.neville3 at mail.dcu.ie
CAIS3 / 55626234
---
"Siúl do bhóthar, scríobh do scéal"