On Sun, May 5, 2013 at 5:57 AM, Leen Besselink <[email protected]> wrote:
> 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.
It's not ECMP for ipv6 I'm looking to see solved for multiple routing
protocols, but the multiple ipv6 prefixes/multiple exits source
routing problem. Take the case where you have one network but two
gateways.
GW A GW B
2001:db8:2::1/48 2001:db8:1::1/48
| |
--your-hosts-on-your-network--
Both gateways distribute both prefixes to all clients, so they have
their choice of prefix to use for any given connection attempt.
Solving for a single default gw in a routing protocol in this case
won't work, as packets sourced from 2001:db8:1:X won't go out
2001:db8:2:X and vice versa.
The homenet folk demonstrated this form of ipv6 multihoming working
(using a version of OSPF and BIRD, I believe) at the last ietf. It was
very cool (to me at least) to see openwrt used in all three of the
bits and bytes demos.
http://www.ietf.org/blog/2013/04/bits-n-bytes-on-video/
--
Dave Täht
Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html
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