OSPF is a good way.

Kevin Myers has a post about using ospf, ECMP, and clans for unequal load 
balancing.  
https://www.stubarea51.net/2016/10/27/wisp-design-using-ospf-to-build-a-transit-fabric-over-unequal-links/


Justin Wilson
j...@mtin.net

www.mtin.net
www.midwest-ix.com

> On Dec 21, 2018, at 1:57 PM, Dennis Burgess via Mikrotik-users 
> <mikrotik-users@wispa.org> wrote:
> 
> Yep that would be the correct setup in this instance.  
> 
> 
> Dennis Burgess, Mikrotik Certified Trainer 
> Author of "Learn RouterOS- Second Edition" 
> Link Technologies, Inc -- Mikrotik & WISP Support Services 
> Office: 314-735-0270  Website: http://www.linktechs.net 
> Create Wireless Coverage's with www.towercoverage.com 
> 
> -----Original Message-----
> From: mikrotik-users-boun...@wispa.org <mikrotik-users-boun...@wispa.org> On 
> Behalf Of Nick Bright via Mikrotik-users
> Sent: Friday, December 21, 2018 12:56 PM
> To: Mikrotik Users <mikrotik-users@wispa.org>
> Subject: Re: [Mikrotik Users] Bonding for availability
> 
> Thanks all, I will look at doing this with OSPF.
> 
> On 12/21/2018 11:43 AM, Robert Nickerson wrote:
>> We use OSPF for a setup of this type. It seems to work well.
>> 
>> Thx
>> 
>> RAN
>> 
>> On 12/20/2018 3:43 PM, Nick Bright via Mikrotik-users wrote:
>>> Greetings,
>>> 
>>> I'm looking at a configuration to set up bonding between two Mikrotik 
>>> routers (CCR1009 and RB2011), using two separate wireless links 
>>> between them (external radios).
>>> 
>>> I am concerned about one of the links having an issue where it stays 
>>> linked, but stops passing traffic.
>>> 
>>> Which bonding driver would be best suited to providing maximum 
>>> availability? Bonded capacity is not required, but the links aren't 
>>> the same speed; so I'd want to prefer the faster link if 
>>> non-aggregated capacity is required.
>>> 
>>> It seems like any method which only supports MII monitoring is out, 
>>> because the MII link wouldn't drop (it's Ethernet to the radio); 
>>> which rules out 802.11ad, active-backup, and balance-tlb.
>>> 
>>> broadcast seems like it would be limited to the slower link, rather 
>>> than the faster link.
>>> 
>>> balance-rr states that it requires equal bandwidth links.
>>> 
>>> This appears to only leave balance-xor and balance-alb. It seems like 
>>> balance-alb is most likely the best choice.
>>> 
>>> I am also unclear on how the ARP availability mechanism judges a port 
>>> to be available. I think that I would want to assign a unique probing 
>>> address to each port on each end of each router, and have those IP 
>>> addresses (one per port) set in the arp-ip-targets list? This should 
>>> allow the router to know which specific ports work, and which don't?
>>> 
>>> Thanks,
>>> 
> 
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