Multi LAN single IP range possible?

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michaelk

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Multi LAN single IP range possible?

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Hello,

Is it possible to make 1 IP range for 2 LAN's ?
I have tried different settings, and used the Search and google i cannot find a solution.

I have 3 NIC's

WAN > **.**.**.**
LAN1 1 GBit connection > 192.168.1.1 1 Gbit > Switch for homenetwork.
LAN2 10 Gbit connection > 192.168.2.1 1 NIC for a 10 Gbit connection. (only 1 serverPC)

Can i configurate my network like this, both LAN cards using the same IP range?
So my serverPC get a 192.168.1.* IP and not in the 192.168.2.* range.

LAN1
\
192.168.1.1
/
LAN2

If i set in IP Settings:

LAN1 192.168.1.1 Range: 192.168.1.100 ~ 192.168.1.200 SUB: 255.255.255.0
LAN2 192.168.1.1 Range: 192.168.1.50 ~ 192.168.1.99 SUB: 255.255.255.0

I get a IP in the DHCP Server tab, but my ServerPC gives a error: IP already used.

Thank you in advance!

In DHCP Server

Saturday, January 30 2016, 02:04 PM

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michaelk

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Sunday, January 31 2016, 10:00 AM - #Permalink
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Nick Howitt wrote:

Out of interest, how does that leave your /etc/sysconfig/network-scripts/ifcfg- files?

That files are not adapted.
so i did a reboot this morning, now all the settings are back to the point bevore the bridge.

Wierd i setup your guide one more time, now is it working!!!
I can do a reboot, all the settings are saved no errors anymore!

ifcfg-br0

DEVICE=br0 TYPE="Bridge" ONBOOT="yes" USERCTL="no" BOOTPROTO="static" IPADDR="192.168.11.1" NETMASK="255.255.255.0" BRIDGE_STP="yes"

ifcfg-enp1s0

DEVICE=enp1s0 TYPE="Ethernet" IPV6INIT="yes" ONBOOT="yes" USERCTL="no" BRIDGE=br0 PROMISC="yes"

ifcfg-enp4s0

DEVICE=enp4s0 TYPE="Ethernet" IPV6INIT="yes" ONBOOT="yes" USERCTL="no" BRIDGE=br0 PROMISC="yes"

Maybe dit change

brctl addif br0 enp1s0

brctl addif br0 enp4s0

something in the system...
Anywhay, thanks for your help!
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Nick Howitt

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Sunday, January 31 2016, 07:40 AM - #Permalink
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Out of interest, how does that leave your /etc/sysconfig/network-scripts/ifcfg- files?
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michaelk

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Sunday, January 31 2016, 02:09 AM - #Permalink
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I didn't get it to work with your guide

I used this guide the "Configuring ClearOS" part: http://macbruins.com/2011/12/01/setting-up-clearos-as-wi-fi-access-point/

To set up the Ethernet bridge

cd /etc/sysconfig/network-scripts

brctl addbr br0

ifconfig enp1s0 inet 0.0.0.0

ifconfig enp4s0 inet 0.0.0.0

brctl addif br0 enp1s0

brctl addif br0 enp4s0

ifconfig br0 up

Add in IP Settings on br0 the IP information

Then edit br0 in DHCP Server.

It works now, i did not find out any trouble yet...

I use ClearOS 7.1 Final 64x

Thank you that you point me in the right direction!
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michaelk

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Saturday, January 30 2016, 03:39 PM - #Permalink
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Thank you, I give this a try later tonight!
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Nick Howitt

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Saturday, January 30 2016, 02:59 PM - #Permalink
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Yes, it is possible. You need to bridge your interfaces. If it goes wrong when making the changes, be prepared to edit from the console using the nano editor as you may lose network connectivity. Once you restart your network, you'll need to either reboot your workstation or release and renew its IP lease to pick up a new IP address.

Can I also suggest you avoid the 192.168.0.0/24 and 192.168.1.0/24 subnets to avoid future issues?
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