From: roopa <roopa@cumulusnetworks.com>
To: Matthew Dupre <Matthew.Dupre@metaswitch.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>, pch@ordbogen.com
Subject: Re: Per-flow IPv4 ECMP
Date: Mon, 28 Sep 2015 06:48:09 -0700 [thread overview]
Message-ID: <56094519.8030801@cumulusnetworks.com> (raw)
In-Reply-To: <BN1PR0201MB05777291EE3D91068CB2EE8E944F0@BN1PR0201MB0577.namprd02.prod.outlook.com>
On 9/28/15, 1:57 AM, Matthew Dupre wrote:
> Hi,
>
> I'm interested in the Linux kernel's support for per-flow IPv4 ECMP (i.e. consistent path selection based on a hash of the connection tuple). I'd been led to believe[1] that this depended on the route cache, which was removed in 3.6.
>
> However, I tested a route with multiple next hops on a 3.10 and 3.13 kernel, and ECMP was per-flow! Obviously I'm pleased that this was the case, but I'd like to understand why this is supported, and whether I can rely on it in future.
>
> Could anyone give me a little clarification on whether this is now supported by some means other than the route cache, and whether that support is intended to be continued?
>
This is being worked on currently by Peter Nørlund
https://lwn.net/Articles/657431/
next prev parent reply other threads:[~2015-09-28 13:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-28 8:57 Per-flow IPv4 ECMP Matthew Dupre
2015-09-28 13:48 ` roopa [this message]
2015-09-29 12:35 ` Peter Nørlund
2016-06-17 18:45 ` Jean He
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