topic Re: Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image in ICX Switches

Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image

paul_edson — Thu, 09 May 2019 21:52:41 GMT

I have one DHCP server in default VLAN. I have multiple VLAN (voice) and I want the ports on the VLAN to grab dhcp addresses from additional scopes. I know that I need to use IP Helper, but all instructions refer to an IP address assigned to your VLAN. I don't see where to do that...only IP address assigned is the siwtches IP.

Re: Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image

vincent_felisaz — Fri, 10 May 2019 07:45:09 GMT

Hi Paul,
As you are using a Switch Image, only one IP address can be configured on the switch. Generally when using DHCP Services, we load the Routing Image which allows you to configure IP/VE per VLAN and an associated DHCP Pool per VLAN.
Cheers
Vince

Re: Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image

paul_edson — Fri, 10 May 2019 14:51:57 GMT

I understand, but I'm not using the Ruckus DHCP services. I'm using my windows server DHCP server on the default VLAN, and just want to hand out a scope\different subnet to another VLAN.

Re: Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image

andrew_giancol1 — Fri, 10 May 2019 15:01:16 GMT

Paul, are you using a standard switch image, and not Router FW?

Re: Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image

paul_edson — Fri, 10 May 2019 15:04:56 GMT

Yeah ..Standard switch image (08070d). I have a flat network now, and daisey chaining an new switch--that will have VOIP on it. THe DHCP server is on the defautl vlan, on sw1.

Re: Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image

andrew_giancol1 — Fri, 10 May 2019 15:51:02 GMT

is your DHCP a VM by chance? How many vlans do you need DHCP to handle?

Re: Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image

paul_edson — Fri, 10 May 2019 15:53:31 GMT

DHCP is a VM on our main server, including file, and Domain server. Outside the default VLAN which the original scope handles, two more VLAN.

Re: Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image

andrew_giancol1 — Fri, 10 May 2019 15:54:18 GMT

if so, possibly you could turn on more interfaces, ip/place them onto ports where native vlan equals the Vlan you're trying to DHCP for, Then as your VOIP devices start asking for DHCP, there should be an issue? this might be overthinking though. Another question, can DHCP in it's current config hear dhcp requests from your clients' devices on all Vlans?

Re: Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image

paul_edson — Fri, 10 May 2019 15:59:22 GMT

From a physical senses yes.DHCP could hear all requests. But VLANing the VOIP, wiht a port that only has a Phone on it...logically DHCP can't not hear teh requests. But it is my understanding that have a VLAN use a different scope and subnet, you need to logically use an IP Helper...

Re: Struggling with one DHCP server, and multiple VLANs on ICX 7150 Switch image

paul_edson — Tue, 14 May 2019 23:20:41 GMT

How about this..do I have use the Router Image to do what I'm trying to do...?