DHCP on Aliase eth0
Patrick Lambooy
p.lambooy at narmida.com
Fri Sep 4 18:59:25 UTC 2009
Just barging in this discussion.
make a virtual ip suited in a vlan and configure this vlan also on the
switch side.
then it will work, done this for a company with 1000+ voip devices.
(on 1 ethernet)
But it requires good network and linux knowledge to make it work.
But it is doable
On Sep 3, 2009, at 11:31 PM, Oluwagbenga Shobowale wrote:
> Thanks I have looked at it ... before and it does not work ... in
> fact I
> just saw an article ... which says alias interface is not supported
> by
> DHCP...
> So I guess this is the end of the road except if someone has tried
> this
> before
> http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Deployment_
> Guide/sect-Configuring_a_Multihomed_DHCP_Server.html
>
> Thanks again
>
> -----Original Message-----
> From: redhat-sysadmin-list-bounces at redhat.com
> [mailto:redhat-sysadmin-list-bounces at redhat.com] On Behalf Of Matt
> Brown
> (Sky Road LLC)
> Sent: Thursday, September 03, 2009 7:48 PM
> To: redhat-sysadmin-list at redhat.com
> Subject: RE: DHCP on Aliase eth0
>
> Totally wrong.
>
> take a look at this:
> http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch08_:_Confi
> guring_the_DHCP_Server#The_.2Fetc.2Fdhcpd.conf_File
> See the section toward the bottom of the page titled:
> DHCP Servers with Multiple NICs
> it might be what you are looking for.
>
> Matt
> ________________________________________
> From: redhat-sysadmin-list-bounces at redhat.com
> [redhat-sysadmin-list-bounces at redhat.com] On Behalf Of Matt Brown
> (Sky Road
> LLC) [mbrown at skyroadasp.com]
> Sent: Thursday, September 03, 2009 1:38 PM
> To: redhat-sysadmin-list at redhat.com
> Subject: RE: DHCP on Aliase eth0
>
> I have not played with DNS in a while, but I think the eth0:0
> interface has
> to be within the range of ips for DHCP.
> try changing the range from .20 to .2 or the ip of the interface to .
> 21.
>
> Could be totally wrong though since the option routers line looks
> sane.
>
> Matt
> ________________________________________
> From: redhat-sysadmin-list-bounces at redhat.com
> [redhat-sysadmin-list-bounces at redhat.com] On Behalf Of Oluwagbenga
> Shobowale
> [gshobowale at nextworksltd.com]
> Sent: Thursday, September 03, 2009 1:27 PM
> To: redhat-sysadmin-list at redhat.com
> Subject: RE: DHCP on Aliase eth0
>
> Thanks ...
> In my own case I had one network on the 192.168.1.0/24 subnet
> however a
> friend needed to use our infrastructure hence I needed to set up
> another ip
> range 192.168.4.0/24 since I wanted them to share my internet.
> Hence I
> created an aliase on the eth0 which my network is on but when I
> configure
> dhcp ...
> Below is my config
> DHCPDARGS="eth0:0";
> # No service will be given on this subnet, but declaring it helps the
> # DHCP server to understand the network topology.
>
> subnet 192.168.1.0 netmask 255.255.255.0 {
> }
>
> # This is a very basic subnet declaration.
> subnet 192.168.4.0 netmask 255.255.255.0 {
> pool {
> range 192.168.4.20 192.168.4.252;
> option routers 192.168.4.2; # NAT interface
> default-lease-time 900;
> max-lease-time 7200;
> }
> }
>
>
>
>
> Virtual Interface
>
> DEVICE=eth0:0
> HWADDR=00:1f:29:e0:70:ce
> ONBOOT=yes
> BOOTPROTO=none
> IPADDR=192.168.4.2
> USERCTL=no
> PEERDNS=yes
> IPV6INIT=no
> NM_CONTROLLED=no
> TYPE=Ethernet
> NETMASK=255.255.255.0
>
>
> Not sure what I am doing wrong ...
>
>
>
> -----Original Message-----
> From: redhat-sysadmin-list-bounces at redhat.com
> [mailto:redhat-sysadmin-list-bounces at redhat.com] On Behalf Of Peter
> Ruprecht
> Sent: Thursday, September 03, 2009 6:21 PM
> To: redhat-sysadmin-list at redhat.com
> Subject: Re: DHCP on Aliase eth0
>
> Oluwagbenga Shobowale wrote:
>> Hello All,
>> I need to know if it is possible to run dhcp server on an aliase
>> interface eth0:0 ?
>>
>> I have configured a dhcp server for a network that should be on this
>> interface but I can't get it to work.
>> Anyone worked on something like this?
>>
>
> Maybe this will help. Here's part of my dhcpd.conf file showing a
> pool
> that gives out addresses on an overlaid private network:
>
> # private subnet / trusted devices
> subnet 192.168.107.0 netmask 255.255.255.0 {
> pool {
> range 192.168.107.20 192.168.107.252;
> option routers 192.168.107.1; # NAT interface
> allow members of "trustednat";
> default-lease-time 900;
> max-lease-time 900;
> authoritative;
> }
> }
>
>
> Then I configure a virtual network interface for that network, in
> /etc/sysconfig/network-scripts/ifcfg-eth0:192 :
>
> DEVICE=eth0:192
> BOOTPROTO=none
> BROADCAST=192.168.107.255
> IPADDR=192.168.107.254
> NETMASK=255.255.255.0
> NETWORK=192.168.107.0
> TYPE=Ethernet
> USERCTL=no
> HWADDR=00:15:17:85:7b:ab
> ONBOOT=yes
>
> If the alias interface is up when dhcpd starts, everything just
> seems to
> work. Can you give more details on how your setup is not working?
>
> Peter Ruprecht
>
> --
> redhat-sysadmin-list mailing list
> redhat-sysadmin-list at redhat.com
> https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list
>
>
>
> --
> redhat-sysadmin-list mailing list
> redhat-sysadmin-list at redhat.com
> https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list
>
> Sky Road LLC Message Disclaimer
>
> This message and any attachment transmitted with it (collectively,
> this
> "Message") may contain confidential or privileged information. It is
> for the sole use of the intended recipient(s). Any unauthorized
> review,
> use or disclosure is prohibited. If you are not the intended
> recipient,
> please advise the sender by reply message (e.g., email, fax or
> telephone) and destroy all copies of this Message. The information in
> this Message is not intended to replace a recipient's own internal
> processes for evaluating a transaction. This Message should not be
> regarded as (i) a recommendation to buy or refrain from buying any
> security; (ii) an offer to sell or solicitation of an offer to buy any
> security; or (iii) an official confirmation of any transaction. Sky
> Road cannot guarantee that the transmission and content of this
> Message
> is secure or error-free. Sky Road does not represent that this
> Message
> is accurate, uncorrupted, or free of viruses or other harmful code.
>
> --
> redhat-sysadmin-list mailing list
> redhat-sysadmin-list at redhat.com
> https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list
>
> Sky Road LLC Message Disclaimer
>
> This message and any attachment transmitted with it (collectively,
> this
> "Message") may contain confidential or privileged information. It is
> for the sole use of the intended recipient(s). Any unauthorized
> review,
> use or disclosure is prohibited. If you are not the intended
> recipient,
> please advise the sender by reply message (e.g., email, fax or
> telephone) and destroy all copies of this Message. The information in
> this Message is not intended to replace a recipient's own internal
> processes for evaluating a transaction. This Message should not be
> regarded as (i) a recommendation to buy or refrain from buying any
> security; (ii) an offer to sell or solicitation of an offer to buy any
> security; or (iii) an official confirmation of any transaction. Sky
> Road cannot guarantee that the transmission and content of this
> Message
> is secure or error-free. Sky Road does not represent that this
> Message
> is accurate, uncorrupted, or free of viruses or other harmful code.
>
> --
> redhat-sysadmin-list mailing list
> redhat-sysadmin-list at redhat.com
> https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list
>
>
>
> --
> redhat-sysadmin-list mailing list
> redhat-sysadmin-list at redhat.com
> https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list
>
More information about the redhat-sysadmin-list
mailing list