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donm35's avatar
donm35
Aspirant
Mar 10, 2020

Disparate network, VLANS, DHCP, Assistance

Hi All,

 

I have a disparate network consisting of a Sonicwall router, M4100 switches, Unifi Wifi and I am trying to make it all work. The network has an M4100 24G POE (Firmware Version 10.0.2.13) switch plugged into a sonicwall TZ300 which is serving up DHCP addresses on 4 VLANS. Another M4100 26G (Firmwre version 10.0.2.20) Switch and finally an M4100 50G POE (firmware version 10.0.2.30) switch. I have 4 unifi switches throughout the network powering 9 Unifi Wifi units with a corporate and guest network. I have 11 Life Fitness machines that want to sit on their own VLAN and a security camera system that wants to sit on its own VLAN.

I was attempting to get all of the switches onto the latest fiemware, but I am unable to download it from Netgear. It fils with a network error at the last second. So for now, the switches all have different firmware. if someone can provide me links to the firmware, I would be so grateful!

 

My current setup looks like this:

M4100 24 G plugged into X0 on the Sonicwall on port 3 which is configured as a trunk port and a unifi 8 switch plugged into port 8 on the 24G which is also configured as a trunk port. Port 2 on the 24G is going to the M4100 26G and is configured as a trunk port.

M4100 26G has an incoming connection from the 24G on port 16 which is configured as a trunk port and a connection on port 7 to the unifi switch, which is also configured as a trunk port. This switch also has an incoming connection from a unifi switch connected to the 50G on port 14 which is configured as a trunk port.

 

M4100 50G Has ports 1 and 2 configured as trunk ports. Currently, the uplink to the 26G is going into the unifi switch, because every time I plug it into port 1 on teh 50G, the link goes down. The unifi switch is connected to port 2 on the 50G and I have a fiber connection to another unifi switch on the property connected to the unifi switch with the 50G. 

 

I have 4 VLANS configured (1 Corporate, 10 Video Cameras, 20 Fitness equipment, 44 Guest wifi). Right now, the guest network and the corporate network are working, except for the 50G switch which is why I have the uplink plugged into the unifi switch. If I switch it out to the 50G, the corporate network works, but I can't DHCP and address over the guest wifi network. I also have the 50G configured for VLAN 20 on ports 37-48 and I am unable to DHCP and address on that VLAN, but I can get it on VLAN 20 from the 24G. 

I have attached pictures of the configuration of the 50G where the VLANS are concerned. All comments suggestions and criticisms are welcomed.

 

9 Replies

  • Just figured out that I didn't have VLAN 44 on the 50G, That will probably fix the DHCP problem with the guest wifi.

  • Here's a screenshot of the 26G Vlan memberships. Basically all of the trunk ports are members of all of the VLANS. 

  • Here's a screenshot of the 24G Vlan memberships. I made port 6 a member of VLAN 20 to test that i could DHCP an address from the sonicwall, and I was successful.

  • Just a few notes: In messing with the configuration, I am now seeing VLAN 20 in the address tableindicating that VLAN 20 traffic is passing through this switch. However, I am not seeing the VLAN 20 mac addresses hit the 26G switch, which seems to be the bottleneck at the moment.

     

    Any ideas on configuration that would pass traffic?

    • DaneA's avatar
      DaneA
      NETGEAR Employee Retired

      donm35

       

      The configuration that you attached is appreciated.  Also, kindly attach a detailed network diagram of the current network setup you have and the network setup you wanted to implement as this will help community members who will read this thread and be able to post a suggestion to your query.  

       

       

      Regards,

       

      DaneA

      NETGEAR Community Team

      • donm35's avatar
        donm35
        Aspirant
        Hi DaneA,

        I will attach a diagram when I am near the computer again.

        I removed all Vlans and readded them back. No dice. I removed vlan 20 and created vlan 30 from scratch. No dice. I finally decided to assign a few static ip's to a few of the equipment and they were able to get out to the internet. I worked with SW support and determined that DHCP packets from the remaining equipment were not reaching the SW. I assigned static ip's to the rest of the equipment (11 devices) and it's all working now. Weird that it works with static ip's and not DHCP. Maybe you all can shed some light on that?

        One more oddity. I joined the guest wifi on vlan 44 and was able to DHCP on that vlan. Vlan 44 is set up exactly the same as vlan 30, no DHCP relay or anything like that.

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