Re: [B.A.T.M.A.N.] BLA and gateway mode

[Simon Wunderlich <sw@simonwunderlich.de>]

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Hi Gary,

On Tuesday, October 16, 2018 5:50:42 PM CEST gary wrote:
> Hi Sinon,
> 
> Thanks for your tips. The loss happens only on one mesh point, other mesh
> points work well. By default bla is enabled on all of the mesh point.
> Can disabling bla on non-backbone mesh point help to improve the mesh
> network's overall performance?

I don't think this will help. If they are not on a shared backbone, BLA will 
not do much more than sending an "announce" frame every 10 seconds. This 
shouldn't have performance implications.

Cheers,
      Simon

> 
> Regards,
> Gary
> 
> -----Original Message-----
> From: Simon Wunderlich <sw@simonwunderlich.de>
> Sent: 2018年10月15日 18:12
> To: b.a.t.m.a.n@lists.open-mesh.org
> Cc: gary <guohuizou2000@sina.com>; 'Марк Коренберг' <socketpair@gmail.com>
> Subject: Re: [B.A.T.M.A.N.] BLA and gateway mode
> 
> Hi Gary,
> 
> when the loss happens, for how long does it happen? Do you see where/why the
> ping packets get dropped? That should be the first step to find out, IMHO.
> 
> Changing the gateway should be working in general [1]. It's also possible
> that the loss is mesh related and the gateway change happens due to a node
> failing in your mesh - that would be a problem independent of BLA.
> 
> I hope those suggestions help you to find out the problem. :)
> 
> Cheers,
>       Simon
> [1]
> https://www.open-mesh.org/projects/batman-adv/wiki/Bridge-loop-avoidance-Te
> stcases#A-client-switches-its-gateway-due-to-loss-of-linkbetter-TQ
> On Monday, October 15, 2018 2:34:53 PM CEST gary wrote:
> > Hi, guys,
> > 
> > I meet an issue related to bla.
> > There are two backbone nodes on backbone LAN, and many mesh nodes
> > connected with the two backbone nodes. When I run ping test on one
> > client, there is about 20% packet loss. And I find out the packet is
> > always loss when the client is switch from one backbone node to
> > another one(observing "batctl cl" on backbone node).
> > 
> > Do you have any suggestion for the issue?
> > 
> > Thanks very much.
> > -----Original Message-----
> > From: B.A.T.M.A.N <b.a.t.m.a.n-bounces@lists.open-mesh.org> On Behalf
> > Of Sven Eckelmann Sent: 2018年10月12日 14:06
> > To: b.a.t.m.a.n@lists.open-mesh.org
> > Cc: Марк Коренберг <socketpair@gmail.com>
> > Subject: Re: [B.A.T.M.A.N.] BLA and gateway mode
> > 
> > On Freitag, 12. Oktober 2018 10:55:02 CEST Марк Коренберг wrote:
> > > Hello, guys.
> > > 
> > > Does anybody know if BLA is somehow connected with gateway mode ?
> > 
> > No it isn't connected.
> > 
> > > In
> > > short, I'm unsure if gateway mode algorythms influence only DHCP
> > > traffic. It is not strictly said. Documentation about BLA II use
> > > term "gateway". As afr as I understand, there maybe case when BLA
> > > gateway is one node, and DHCP gateway is another one.
> > 
> > Correct
> > 
> > > So, the question: does
> > > GW functionality influence BLA algorythms ?
> > 
> > No
> > 
> > Kind regards,
> > 
> > 	Sven


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