Layer3 MS Switch terminating Management-VLAN

[whistleblower]

hi all,

I`d like to know whether the following requirement can be implemented - a MS350 (physical stacked) should act a Layer3 LAN gateway for some IP-subnets and one of these IP-Subnets should participate as transition network in OSPF-Routing -> please have a look on the attached sketch! -> so far I hope this could be made up and is no problem... 🙂

the question for me is now, if the MS350-Stack is also serving IP-Adresses via DHCP for the other Meraki devices out of the MGMT-VLAN would this work?

reading through that documentation it`s not recommended... 😕

https://documentation.meraki.com/Architectures_and_Best_Practices/Cisco_Meraki_Best_Practice_Design/...

I hope someone can help and I thank you for your support in advance

[GreenMan]

Yes - don't do that:    "Avoid configuring a L3 interface for the management vlan."

You can only serve DHCP if you have configured a L3 interface.

Try using a different management VLAN for all the downstream devices (for which you can serve DHCP) - with a dedicated VLAN for management of the routing switches.

[whistleblower]

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@GreenMan wrote:

Try using a different management VLAN for all the downstream devices (for which you can serve DHCP) - with a dedicated VLAN for management of the routing switches.

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what do you mean exactly with that, maybe you can give me an example?

[GreenMan · Accepted solution]

Use a dot1Q trunk from your L3 stack to your perimeter router, carrying two VLANs;   one purely for management of the L3 switches, the other as a transit for all other traffic routing through/by the L3 stack.