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Khaled AzzazFlag for United States of America

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Comcast EDI on Meraki MX 100

I got a Comcast EDI connection with the usual two  sub nets /30 and the /27. I have a Meraki MX 100 with one Wan connection and I can assign one of the Lan port as a second WAN if needed. I setup the /30 as my main connection , internet works fine. I am not sure how to route /27 ones and using them as additional Public IP addresses because i need one for my VPN users. I know that the Meraki MX 100 has a VPN connection and it is being used and not to be used as different as it was setup. Simply how do I get to one of the /27 public IP.

I am not that familiar with routing on the Meraki MX 100.

Thank you.
.
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masnrock
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The simplest scenario is simply asking Comcast to change the way that they did your configuration. They can have their interface present only the usable subnet, but you have to specifically request it.

Another way you can do about it is having a L3 switch in between. That avoids you having to make any configurations you may find weird on the Meraki. When I used L3 switches, I used Cisco Small Business units, but any L3 switch should work fine. Here's a Meraki Community thread which may help you: https://community.meraki.com/t5/Switching/Meraki-and-Comcast-EDI/td-p/36808
You should be able to just use one of the /27 addresses.

Comcast knows to route the /27 to your part of the /30. The Meraki will know how to route the traffic from the /27 to Comcast.

This is a case where implementation is simpler than you would think.

Not familiar with Meraki specifically, but it have Transit networks (/30 or /29) leading to larger networks (/24, /26, /27) on firewalls and there isn't really anything to do but assign a NAT or IP to your /27 and use it.
You can always contact Meraki support if needed.

An L3 switch will just makes things unnecessarily complicated, and totally unnecessary.
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ASKER

Thanks Kevinhsieh,

Meraki just kind say it cannot be done when i opened a ticket with them.
I think I need to call them on the phone so they don't ignore me.

Mansrock, according to your suggestion, I should get an L3 switch and do the routing between the /30 and /29 before the Meraki WAN connection?

The Meraki has so much configuration, I would prefer not get it involved in anything Except minor stuff.
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