Hi Alexei,

I run into following issue:

root@ODLserver:/home/andrew# ip li add vxlan0 type vxlan id 42 remote 171.1.1.1 
local 170.1.1.1 dev eth1
====> OK

root@ODLserver:/home/andrew# ip li add vxlan1 type vxlan id 42 remote 172.1.1.1 
local 170.1.1.1 dev eth2
==> RTNETLINK answers: File exists

Do you know why Linux kernel reject second CLI ?

>From user perspective,  it is a perfect fine configuration because I want to 
>create two P2P vxlan 
Tunnels to connect TWO VTEPs using same VNI.

Thanks,

Andrew


root@ODLserver:/home/andrew#
-----Original Message-----
From: Alexei Starovoitov [mailto:a...@plumgrid.com] 
Sent: Monday, August 10, 2015 10:37 PM
To: Andrew Qu; David Miller
Cc: tg...@suug.ch; je...@nicira.com; pshe...@nicira.com; netdev@vger.kernel.org
Subject: Re: VxLAN support question

On 8/10/15 4:47 PM, Andrew Qu wrote:
>
> Pretty much what I want is that  kernel will have about 1K interfaces 
> (something like Tunnel100.1-tunnel100.1000 To be created and attached 
> to 1K bridge domains on which each VNI is associated with given VNI to 
> bridge-domain will be assigned using other CLIs)

creating 1k vxlan devices is doable, but you probably want to take a look at 
recently added metadata mode of vxlan.
Also sounds like for each vni you'd need a different multicast group?
What fabric going to support that?

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