Shayne,

Do you set both ends as priority1 in NBMA?

-- 
Terri Kelley
Network Engineer
254-697-6710
Farm to Market Broadband

On July 21, 2016 at 2:54:35 PM, Shayne Lebrun ([email protected]) wrote:

Oh, agreed: if it works, it works. If it doesn't work, and it's not  
something obvious like the wireless link having bad CCQs or tons of packet  
loss, try NBMA. It's only a few more steps to set up.  

-----Original Message-----  
From: [email protected]  
[mailto:[email protected]] On Behalf Of Scott Lambert  
Sent: Thursday, July 21, 2016 3:14 PM  
To: Mikrotik discussions  
Subject: Re: [Mikrotik] ospf init bit  

On Thu, Jul 21, 2016 at 01:38:37PM -0500, Terri Kelley wrote:  
> Yup ubiquiti. Thought NBMA was more for wire  

NBMA is for links where broadcast packets may not get through.  

I run OSPF in point-to-point mode over my UBNT links. I don't filter  
multicast on the UBNT devices and I enable WDS mode.  

I haven't had much trouble with OSPF via UBNT since airOS 5.3. Before that,  
there were lots of issues and NBMA / point-to-point were the only solutions.  
Point-to-point is less work to configure, so I just use that. There are two  
devices in a point to point configuration so I figure it feels correct to  
put OSPF into that mode anyway.  


> -----Original Message-----  
> From: Shayne Lebrun <[email protected]>  
> To: 'Mikrotik discussions' <[email protected]>  
> Sent: Thu, 21 Jul 2016 1:35 PM  
> Subject: Re: [Mikrotik] ospf init bit  
>  
> What sort of wireless link is it between the two radios? I'm going to go  
out on a limb and guess Ubiquiti?  
>  
> In any event, try NBMA.  
>  
> -----Original Message-----  
> From: [email protected]  
> [mailto:[email protected]] On Behalf Of Terri  
> Kelley  
> Sent: Thursday, July 21, 2016 12:37 PM  
> To: [email protected]  
> Subject: [Mikrotik] ospf init bit  
>  
> Having an issue on a link between two 750s where I???m getting on the  
> 750Gr2 end; Database Description packet has init bit set in middle of  
> an exchange messages all the time. This link will get to the point it  
> doesn???t pass traffic anymore and about the only way to get it to run  
> again is do a hard reboot. The other end is a 750GL. Between the two  
> are UBNT Titaniums in bridge mode. Everything is been changed out at  
> both ends except the 750GL.  
>  
> OSPF is set for point to point since it is basically wireless between  
> the two 750s. The same setup exists for another link off the Gr2 and I  
> do not get that message for that neighbor nor do I get it through the  
> Mimosa bridge off that router. Running v6.35 on all of them.  
>  
> Any clues what the cause of this is?  
>  
>  
> --  
> Terri Kelley  
> Network Engineer  
> 254-697-6710  
> Farm to Market Broadband  
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--  
Scott Lambert KC5MLE Unix SysAdmin  
[email protected]  
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