cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Layer 3 Switch To Replace ISP Router

SOLVED
Comes here often

Layer 3 Switch To Replace ISP Router

I read similar topics and think I have a grasp on things but still have a question regarding this scenario and the management IP of the switch performing the ISP routing. The management IP cannot have a gateway of it's own L3 interfaces nor can it be the same IP address as one of those interfaces, correct? So in this scenario would I need to increase the /30 to a /29 so the management IP can be unique? That or have an access port on the management VLAN the connects to the MX LAN? Any help is greatly appreciated.MS350 as Router.png

1 ACCEPTED SOLUTION

Accepted Solutions
Highlighted
Kind of a big deal

Re: Layer 3 Switch To Replace ISP Router

>Is my understanding of the management IP correct and if I’m unable to get a /29 for the WAN segment I’d need to put the management IP on a VLAN with internet access behind the MX?

 

That is the case.

View solution in original post

4 REPLIES 4
Highlighted
Kind of a big deal

Re: Layer 3 Switch To Replace ISP Router

Go for the /29.  It will be reliable and problem free.

Highlighted
Comes here often

Re: Layer 3 Switch To Replace ISP Router

Thanks for the quick reply Philip.  Is my understanding of the management IP correct and if I’m unable to get a /29 for the WAN segment I’d need to put the management IP on a VLAN with internet access behind the MX?

Highlighted
Kind of a big deal

Re: Layer 3 Switch To Replace ISP Router

>Is my understanding of the management IP correct and if I’m unable to get a /29 for the WAN segment I’d need to put the management IP on a VLAN with internet access behind the MX?

 

That is the case.

View solution in original post

Highlighted
Comes here often

Re: Layer 3 Switch To Replace ISP Router

That is what I thought but just wanted to make sure.  Thanks again!

Welcome to the Meraki Community!
To start contributing, simply sign in with your Cisco account. If you don't yet have a Cisco account, you can sign up.