netdev - Re: [net-next v8 0/3] add broadcast_neighbor for no-stacking networking arch

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Message-ID: <aNpE74KD9jxSo4Ei@fedora>
Date: Mon, 29 Sep 2025 08:35:59 +0000
From: Hangbin Liu <liuhangbin@...il.com>
To: Tonghao Zhang <tonghao@...aicloud.com>
Cc: netdev@...r.kernel.org, Jay Vosburgh <jv@...sburgh.net>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>, Jonathan Corbet <corbet@....net>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Nikolay Aleksandrov <razor@...ckwall.org>,
	Zengbing Tu <tuzengbing@...iglobal.com>,
	Liang Li <liali@...hat.com>
Subject: Re: [net-next v8 0/3] add broadcast_neighbor for no-stacking
 networking arch

On Sun, Sep 28, 2025 at 12:11:49PM +0800, Tonghao Zhang wrote:
> 
> 
> > On Sep 24, 2025, at 10:23, Hangbin Liu <liuhangbin@...il.com> wrote:
> > 
> > On Fri, Jun 27, 2025 at 09:49:27PM +0800, Tonghao Zhang wrote:
> >> For no-stacking networking arch, and enable the bond mode 4(lacp) in
> >> datacenter, the switch require arp/nd packets as session synchronization.
> >> More details please see patch.
> > 
> > Hi Tonghao,
> > 
> > Our engineer has a question about this feature. Since the switch requires
> > ARP/ND packets for session synchronization, do we also need to send IGMP
> > join/leave messages to the switch for synchronization?
> Hello, I'm very sorry for replying to your question so late. In fact, the non-stacking network architecture disables the multicast function to prevent the server from learning other server real mac addresses. This architecture uses the arp proxy. To better answer your question, I post a blog:
> https://huatuo.tech/blog/2025-09-26-some-thoughts-on-non-stacking-network-architecture/

Thanks for your explanation.

Regards
Hangbin