Utilizing multiple dynamic IP's from the ISP

RouterOS General
1

I have access to 4 DHCP IP’s, is there some clever way to utilize all of those with RouterOS while only using 1 interface, (i.e one cable from the cable modem to the routerboard).
I know this is a more advanced feature not many router’s have. I think this was talked about implementing in pfsense, but i don’t know if anything came to fruition.

2

You need 4 different interfaces to get 4 dhcp addresses.

3

Alright that settles it, thanks mrz!

4

or 4 routers =)

5

actually it comes down to needing 4 unique mac addresses. You could run some meta routers and virtual ethernets.

6

I always wondered how come there is no virtual ethernet interface inside RouterOS. A second and third MAC address per interface. Without any virtual BS.

7

There is an entry for it in winbox, interfaces > + > virtual ethernet, but when adding it it says feature not implemented yet. something that has been in the making, or is it for something completely different?

8

it’s for Metarouter and KVM, I believe…

9

I can’t count the times I needed a second and third MAC address (virtual Ethernet) per port on a RouterBORD and on a x86 with RouterOS.

That WinBox item is used with Metarouter/KVM, yes.

I need a “Virtual Ethernet” interface without having to use a KVM.

10

You guys are saying it’s possible with Metarouters, however I can’t get it to work.

I’m receiving a public IP from my cable ISP through ether1-gateway. I added a Metarouter and created a Virtual interface for it.
I used the ether1-gateway as source for the virtual interface and setup the virtual interface of the Metarouter to request a DHCP address.

Just keeps searching for a DHCP ip, but doesn’t get one.

Am I doing anything stupid, or did I understand it wrong that multiple dynamic IP’s are possible with a Metarouter?

Thanks!

11

Use the sniffer to see your outgoing DHCP requests. If you see them, but you don’t see answers to them, its the DHCP server thats not giving it. :slight_smile: It’s an ISP DHCP - it uslualy is bound to the clients MAC and any additional MAC addresses are not given service. :slight_smile:

12

Thanks for the tip, didn’t thought this would be a problem at my ISP, because I can just connect an other pc directly to the modem and I just get an other IP address, hoewever that’s not at the same time. Maybe it’s configured to only give out one ip at a time.

Tried to bind my virtual interface to the bridge, and it just got an IP address so there’s nothing wrong with the Metarouter.

Thanks for your help!