netdev - Re: [PATCH iproute2 net-next 2/2] Enable configuring multicast group join / leave at IP level.

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Message-ID: <CAN_zqfPPsZM9P6_WD6h2yrRHMajHac1xUeacsj_P-fTwugD7fg@mail.gmail.com>
Date:	Mon, 16 Mar 2015 10:59:47 -0700
From:	Madhu Challa <challa@...ronetworks.com>
To:	Stephen Hemminger <stephen@...workplumber.org>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH iproute2 net-next 2/2] Enable configuring multicast group
 join / leave at IP level.

On Sun, Mar 15, 2015 at 12:43 PM, Stephen Hemminger
<stephen@...workplumber.org> wrote:
> On Wed,  4 Mar 2015 10:30:10 -0800
> Madhu Challa <challa@...ronetworks.com> wrote:
>
>> Joining multicast group on ethernet level via "ip maddr" command would
>> not work if we have an Ethernet switch that does igmp snooping since
>> the switch would not replicate multicast packets on ports that did not
>> have IGMP reports for the multicast addresses.
>>
>> Linux vxlan interfaces created via "ip link add vxlan" have the group option
>> that enables then to do the required join.
>>
>> By extending ip address command with option "autojoin" we can get similar
>> functionality for openvswitch vxlan interfaces as well as other tunneling
>> mechanisms that need to receive multicast traffic.
>>
>> example:
>> ip address add 224.1.1.10/24 dev eth5 autojoin
>> ip address del 224.1.1.10/24 dev eth5
>
> Applied, but please update manual pages as well.

Thanks Stephen. Sure I will.

Thanks.
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