Solved
Hi All,
I am new to my company's Meraki Network and I want to figure it out how it works.
My company Network is using this Topology in the article below
The Layer 3 Switch is using HP 3800 and all the Vlans created on it. All the Static Routes are created on MX Appliance and each Route is setup with a DHCP Server to provide DHCP services to the clients.
You can see between MX and Layer 3 Switch it is using an Access link, on Meraki Port is Access Port only Allow Native Vlan in this case is Vlan 50.
1. What I don't understand how DHCP Server give IP to downstream clients when MX is using Access Mode to connect Layer 3 Switch not using Truck Mode? should the Link to Trunk?
2. For example, a new client A in Vlan 1 want to get a IP from DHCP Servers of Static Route 1, Layer 3 Switch will forward the DHCP request to MX, but how MX decide which DHCP server to assign IP to Vlan 1?
3. I tried to create a new Vlan 3 on Layer 3 MX Switch with all the exact same setting as other Vlans, but somehow the client on the new Vlan 3 couldn't get an IP address from DHCP server, I am wondering where it is wrong.
Any suggestions or any useful articles please share with me, Thanks first.
Hi @alemabrahao , thanks for the reply, I understand the DHCP Relay needs to be configured in L3 Switch, but I have gone through every menu on the HP L3 Switch Web page but couldn't find any place for DHCP Relay, unless there is management Portal I am not ware of that can configure Relay on this HP L3 Switch.
Also could the default Route configured on L3 Switch be acting as DHCP Relay (IP Helper)?
Hi Dimatt, thanks for you reply. The L3 Switch is not Meraki Swtich, it's HP 3800-24G-2SFP and I couldn't find a setting to setup DHCP.
Also in this Meraki Example, the DHCP server is setup on the MX, not on the Layer 3 Switch.
https://documentation.meraki.com/MS/Layer_3_Switching/Layer_3_Switch_Example
I am thinking replacing the HP L3 Switch with Meraki L3 Switch for future, but at current stage I need to figure it out how the HP Switch does the DHCP Relay as I couldn't find any setting for DHCP Relay.
Hi @alemabrahao , thanks for the Video, the HP 3800-24G-2SFP doesn't have the DHCP Relay menu, I am starting looking for other solutions.
There is a Meraki Switch MS225 on the network and I searched this MS225 can do the DHCP Relay so I am planning to setup DHCP Relay on this MS225, but this MS225 is connecting to HP L3 Core Switch first, MS225 is not connecting to MX directly.
My question:
If I setup a new Vlan on MS225 and setup a DHCP Relay to point to MX Gateway, although MS225 is not directly connected to MX, will the DHCP Relay work?
