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Date: Mon, 12 Oct 2015 08:38:50 -0700
From: Stephen Hemminger <stephen@networkplumber.org>
To: Shaham Fridenberg <ShahamF@Radware.com>
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Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] dpdk 2.1.0: 40gig ports link is down
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On Mon, 12 Oct 2015 13:29:42 +0000
Shaham Fridenberg <ShahamF@Radware.com> wrote:

> Hey all,
> 
> I upgraded from dpdk 1.8.0 to 2.1.0 and now my 40gig ports (rte_i40e_pmd) link is down.
> 
> Any idea what might be the issue?
> 
> Thanks,
> Shaham

Compile i40e with DEBUG flag enabled in config and make sure LOGLEVEL
is set to 8 to show debug output.

It maybe something related to firmware versions.
Make sure you have updated firmware (see Intel tool).