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Helper IP

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Helper IP

There are several instences where devices need to find each other across subnets. Cisco IOS has a feature called helper IP that can facilitate this. Does meraki have anything simila

 

Basically I have a Sonos system on one subnet and I would like to give people on the guest network access to the sonos system. Sonos can't comunicate with anything outside it's broadcast domain. 

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Head in the Cloud

Re: Helper IP

If the DHCP resides on the MX you can do DHCP options which is sort of IP-Helper equivalent.

However, if your guest network is cut-off/isolated then you will need to do some whitelisting for devices on guest network to communicate with other VLANs.
Nolan Herring | nolanwifi.com
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4 REPLIES
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Head in the Cloud

Re: Helper IP

If the DHCP resides on the MX you can do DHCP options which is sort of IP-Helper equivalent.

However, if your guest network is cut-off/isolated then you will need to do some whitelisting for devices on guest network to communicate with other VLANs.
Nolan Herring | nolanwifi.com
TwitterLinkedIn
Getting noticed

Re: Helper IP

I need to forward all sorts of broadcasts. not just DHCP requests. Will white listing forwards broadcasts from the sonos?

Head in the Cloud

Re: Helper IP

Broadcast won't traverse different subnets. I'm not familiar with SONOS but do they support any sort of multicast features? The IP Helper option that you referring to, the only thing on the Meraki side that I can think of resides under the DHCP options.
Nolan Herring | nolanwifi.com
TwitterLinkedIn
Getting noticed

Re: Helper IP

I always thought IP helper was a general broadast forwarding protocol but its strickly for DHCP. Sonos just doesn't support control outside of its broadcast Domain. I was on the phone with a really awsome support guy who looked at the packet captures from my phone trying to connect to sonos. They are using a proprietary protocol that resembles UPnP and a combination of broadcast and multicast traffic. 

 

Sonos is just the worng product for what this client wants to do.