ECMP support

[Pavlos Parissis]

On 15/12/2015 12:41 μμ, Ondrej Zajicek wrote:
>> On Mon, Dec 14, 2015 at 6:31 PM, d tbsky <tbskyd at gmail.com> wrote:
>>> 2015-12-14 23:02 GMT+08:00 Shaun Crampton <Shaun.Crampton at metaswitch.com>:
>>>> Hi,
>>>>
>>>> I found a few messages in the archive that mention multi path and ECMP
>>>> but the website says it's TODO.  I was just wondering what the status is?
>>>> I'm interested in having BIRD configure the Linux routing table for ECMP,
>>>> if possible.
>>>
>>> I have heard that bird 1.5 get some new functions about ecmp, but I can
>>> not  find out what are them. can anybody give some hint about what's new in
>>> bird ecmp?
>>
>> On Mon, Dec 14, 2015 at 06:38:49PM -0800, kris wrote:
>> Part of the problem is the kernel. The other part is BGP multipath. I've
>> offered to sponsor its development, but the maintainers of bird aren't
>> interested.
> 
> Hi
> 
> IPv4 ECMP for OSPF and static routes is supported since long ago.
> 
> IPv4 ECMP for RIP is supported since v1.5.0.
> 
> IPv4 BGP multipath is supported in master branch in devel tree
> (commit 8d9eef17713a9b38cd42bd59c4ce76c3ef6c2fc2).
> 

But, the kernel will balance the traffic to multiple next hops, right ?

We use resilient ECMP on Arista( a close implementation mentioned in
RFC2991, RFC2992) and was looking to simply run Bird on Linux to achieve
the same.

Cheers,
Pavlos

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