Hello,
I’d like to know if it’s possible to have an RB750G get 2 public addresses from a cable modem on port 1?
Currently, I have a cable modem connected to port 1 and this provides connectivity to via standard NAT to my network. The RB receives a DHCP address from the modem and then NAT’s it to my current network.
However, i’d like to setup port 1 so that I can have a VLAN (e.g. “VLAN 2”) on this same physical network which will allow any device that’s on “VLAN 2” to get a public DHCP address directly from the modem and not the RB.
My reason for this is that I’d like to setup VM’s to connect to VLAN2 and have them connect directly to the internet, something like a DMZ VLAN as it were.
Any help or pointers on how to accomplish this are greatly appreciated. Thanks!
And you want VLAN 2 to appear on the LAN? Can you clarify?
Correct.
My current arrangement is something like this:
cable modem → port 1 on RB750GL → port 5 on RB750GL → Procurve 1800 → Workstations & VM’s
------------------(DHCP public address)----- (10.0.1.1/NAT)----(10.0.1.3/NAT)------(10.0.1.*/NAT)
I would like to create a VLAN setup that would allow me to do something like this:
cable modem → port 1 on RB750GL → port 5 on RB750GL → Procurve 1800 → Workstations & VM’s
------------------(DHCP public address)----- (10.0.1.1/NAT)----(10.0.1.3/NAT)------(10.0.1.*/NAT)
----------------------VLAN1 & 2------------------trunk-----------------trunk-------------VLAN1 & 2
The end goal is for any device on VLAN2 to be able to receive a DHCP address directly from the modem.
Sorry about all the dashes, I couldnt figure out how to add whitespace to this diagram…
Try this:
Create the VLAN interface on the LAN interface.
Create a bridge and add Ether 1 and the VLAN as ports on the bridge.
Move your DHCP client to the bridge rather than Ether 1.