netdev - Re: [Xen-devel] xen-netback notify DomU to send ARP.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 09 Jan 2013 09:07:16 +0800
From:	Jason Luan <luanjianhai@....com>
To:	Ian Campbell <Ian.Campbell@...rix.com>
CC:	xen-devel@...ts.xensource.com, netdev@...r.kernel.org,
	konrad.wilk@...cle.com
Subject: Re: [Xen-devel] xen-netback notify DomU to send ARP.

于 2013年01月09日 00:00, Ian Campbell 写道:
> On Tue, 2013-01-08 at 15:40 +0000, jianhai luan wrote:
>> On 2013-1-8 21:42, Ian Campbell wrote:
>>> On Tue, 2013-01-08 at 13:13 +0000, Jan Beulich wrote:
>>>>>>> On 08.01.13 at 12:57, jianhai luan <jianhai.luan@...cle.com>
>>>>>>> wrote:
>>>>>      When Xen Dom0's network circumstance changed, DomU
>>>>> should be notified in some special condition. For
>>>>> example the below circumstance:
>>>>>      ping from Guest A to DomU:
>>>>>      Guest A --> eth0 - bond0 - xenbr0 --VIF(DOMU)
>>>>>                  eth1 /
>>>>>      when eth0 inactive, and eth1 active.
>>> How is eth0 failing? Are you unplugging it, un-enslaving it or
>>> taking
>>> some other sort of administrative action?
>> In my emulation environment, i unplug it or ifdown the interface,
> I expect these would behave rather different, since the affect of ifdown
> looks rather different to an unplug from the PoV of the switch.
>
> Is the ifdown case something which you are trying to solve or just what
> appeared to be a convenient test case? I'd be less inclined to worry
> about explict admin actions such as that.
>
> Unplugging the cable should cause:
>
I do above listed thing to let switch active slave only.
I think that we should put attention on the thing which bond switch 
active slave interface in active-backup mode. In network circumstance, 
many thing will cause the switch, what do Vif when the event happen?
>>> Doesn't this state change cause the switch to which eth0 and eth1
>>> are
>>> attached to forget the MAC tables associated with the eth0 port,
>>> meaning
>>> that subsequent traffic will be flooded until it learns that eth1 is
>>> the
>>> new port?
> Ian
>
>
>
> _______________________________________________
> Xen-devel mailing list
Thanks,
Jason
> Xen-devel@...ts.xen.org
> http://lists.xen.org/xen-devel


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html