Load Share between dual ISP and dual MX in campus

[mdrahusz]

MX  question

Have two buildings (campus) tied together with Dark Fiber.  Want to have separate ISP connections into each physical building with MX100 Terminating single/ISP in the different builds.  Working to determine if MX100 can support Load Sharing over the two ISP links and looking for a pointer in documentation on how to implement.  Sorry if this is a basic question - having just trying to verify this as a supported design and how to implement (if available).  Thanks in advance for help.

[PhilipDAth · Accepted solution]

The MX100 can support load balancing.  Here are the instructions.

https://documentation.meraki.com/MX-Z/Firewall_and_Traffic_Shaping/MX_Load_Balancing_and_Flow_Prefer...

[mdrahusz]

Thank you for the quick reply

Just to confirm, there is no issue with the Internet Circuits being terminated in different buildings (connected via dark fiber) and one ISP  connected into MX A in Building A and the second ISP connected into MX B in Building B?  I would not have both ISP connected into a single MX in this design.

[PhilipDAth]

You need both ISPs to connect to the same MX (or the same pair if you want to run HA) if you want to do load balancing (as opposed to failover).

Assuming you have some kind of fibre ISP circuit, you can trunk the ISP circuit across your dark fibre in a VLAN.

Ideally you want an ISP circuit which is using normal Ethernet encapsulation with static IP addresses rather than PPPoE.