[Babel-users] atomic updates and ipv6 cache flushing issues

[Leen Besselink]

On Sun, May 05, 2013 at 05:11:26AM -0700, Dave Taht wrote:
> Robert bradley has been working on making atomic route updates work
> and possibly better route cache flushing.
> 
> His current branch merges just fine with babeld head, and has tested
> it on 3.5, 3.7 and 3.8, but I have not tested it thoroughly yet
> myself.
> 
> get the patchset from: git://github.com/rb12345/babeld.git
> 
> 

Hi,

I've been watching from a far what Babel has been doing and I find it all very interresting.

Also I have some test VMs I'm running to see how Babel works and seen this bahaviour as well.

I hope to find the time to give this code a try.

My questions are some what related:

Now that Linux 3.8 has support for IPv6 ECMP is there any plan to use that again to make updates
more attomic or even support multipath directly. Because that is what I've been interrested in.

If I remember correctly Dave Täht also mentioned he would like to see someone implement it.

I had a look at the code and how multipath is handled by some of the other implementations.

Do I understand it correctly that in the case of babeld it might 'just' be make babeld recognize
equal routes, have a way to keep track of them inside babeld and add multiple routes to the kernel.

Or have I misunderstood how the Babel protocol works and does multipath not fit well with the protocol
and would it mean more changes, not just local to that one machine.

Can I ask what is the current situation with babeld and in Quagga-RE ? At first I thought code would
just go from babeld to Quagga-RE, but clearly it is not a one way street. Because for example Quagga-RE
has authentication and babeld does not.

When code is commited for babeld how does that end up in Quagga-RE ?

And when people add code to Quagga-RE how does that end up in babeld ?

Have a great weekend,
	Leen.

> -- 
> Dave Täht
> 
> Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html
> 
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