The VLAN method does work.  You can also do a full duplex link utilizing two 
sets of radios.  This has been around for quite some time.  But that also 
assumes you have radios of the same relative capacity.
Justin Wilson
[email protected]

---
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Internet Exchange - Peering - Distributed Fabric

> On Jan 3, 2017, at 11:49 AM, Adam Moffett <[email protected]> wrote:
> 
> What Eric said.
>  
> Except, I believe you said the two links were of unequal capacity.  OSPF 
> can't natively load balance unequal paths.  If you set them to equal cost, 
> you'll actually get 2x the capacity of the smaller link, and the larger link 
> will be underutilized.  There was a trick somebody posted here a few weeks 
> ago where you create a set of VLAN's on each path and do equal cost load 
> balancing on the VLAN's instead of the real paths.  Basically if one path was 
> 3x bigger than the other, then create 3x as many VLAN's on that path.  
>  
> I haven't tried it yet....seems plausible though.
>  
>  
> ------ Original Message ------
> From: "Eric Kuhnke" <[email protected] <mailto:[email protected]>>
> To: "[email protected] <mailto:[email protected]>" <[email protected] <mailto:[email protected]>>
> Sent: 12/30/2016 6:00:25 PM
> Subject: Re: [AFMUG] Mirotik help - dual backhauls and bridges
>  
>> Hit enter too soon. If you want two parallel PTP links between two sites, 
>> sharing traffic equally. Assuming both radio links are identical equipment 
>> and identical speed capability. Set the same OSPF cost on the router 
>> interfaces both ends. 
>> 
>> This is logically the same thing as putting two routers next to each other 
>> in a test lab environment, and running two patch cables between them in an 
>> OSPF area 0, equal cost path configuration.
>> 
>> 
>> 
>> On Fri, Dec 30, 2016 at 2:58 PM, Eric Kuhnke <[email protected] 
>> <mailto:[email protected]>> wrote:
>> You should not be extending layer 2 switch fabrics over PTP microwave.
>> 
>> One router at each site.
>> 
>> Each router gets a /32 OSPF loopback address.
>> 
>> One OSPF /30 per radio link.
>> 
>> The only MAC addresses that should exist on the radio link (which is itself 
>> a L2 bridge) are the single MACs for the router interfaces on each end.
>> 
>> 
>> 
>> On Fri, Dec 30, 2016 at 12:50 PM, Ty Featherling <[email protected] 
>> <mailto:[email protected]>> wrote:
>> I have my network setup with a common bridge (bridgeWAN) setup on each 
>> router in an area. The backhaul in goes into this bridge and any backhauls 
>> to further sites do as well. OSPF sorts out the default path and the bridge 
>> gets them there in one IP hop. I have a major site that I am added a second 
>> backhaul link to the upstream direction today (Airfiber 5x multiplexer for 
>> the win). I am trying to figure out how to bond these two backhauls from 
>> bridgeWAN on router A to bridgeWAN on router B. Any way to share the load 
>> across those links would be great. If I just plug them in spanning tree 
>> shuts one down. The real kink in the works may be that they have different 
>> capacities. What can I do? 
>> 
>> 
>> -Ty

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