Yep. I will usually use point to point on the wireless side of things to avoid 
that type of stuff.

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



On Oct 13, 2014, at 7:29 PM, Scott Lambert wrote:

> On Mon, Oct 13, 2014 at 07:00:16PM -0500, Mike Hammett wrote:
>> Not my network, only helping out a friend that's currently unreachable. The 
>> client replaced two routers today . 
>> 
>> Any idea what to do with this? 
>> 
>> 18:51:23 route,ospf,info Database Description packet has different master 
>> status flag 
>> 18:51:23 route,ospf,info new master flag=false 
>> 18:51:23 route,ospf,info OSPFv2 neighbor 10.200.200.14: state change from 
>> Full to 2-Way 
>> 
>> The other side just sees the drop from Exchange to 2-Way.
>> 
>> Bunch of stuff here not how I'd build it, so I'm not sure if they
>> messed something up reconfiguring the routers, I'm just not used to it
>> or if ROS is broken.
>> 
>> One side is 6.15, the other is 6.20.
> 
> Something in the link went bad and the devices got out of sync.  I
> usually see it on wireless links where the routers are not using
> network-type=nbma or point-to-point
> 
> BFD enabled will cause that to happen more often, no matter what
> network-type you use.
> 
> NTP advancing the clock on one side or the other can make that side
> expire the hold timer, suddenly.  But I've not seen that since StarOS.
> 
> -- 
> Scott Lambert                    KC5MLE                       Unix SysAdmin
> [email protected]
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> Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS

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