netdev - Re: Issue with LACP mode support in Linux bonding driver

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]

Message-ID: <CADAe=+LV=qxt1fwxJdvz6ODScDGGUpmA0YE+mPKZE4C2X0sqUA@mail.gmail.com>
Date:	Fri, 26 Jun 2015 07:07:09 +0530
From:	Ajith Adapa <adapa.ajith@...il.com>
To:	netdev@...r.kernel.org
Subject: Re: Issue with LACP mode support in Linux bonding driver

Hi,

How can I know the current maintainer for Linux Bonding Driver ?

Regards,
Ajith

Regards,
Ajith
--------------------------------------------
codingfreak.blogspot.com


On 24 June 2015 at 15:25, Ajith Adapa <adapa.ajith@...il.com> wrote:
> Hi,
>
> I am using Centos7 with v3.10 kernel.
>
> My issue is related to multiaggregation in LACP.
>
> In my setup topology I connected linux server and a L2 switch back to
> back with 2 interfaces eth0 and eth1 (on both sides).
>
> On Switch I have mapped eth0 to po1 and eth1 to po2. On linux server I
> have created a single bond interface with both interfaces eth0 and
> eth1.
>
> On L2 switch both po1 and po2 has same system-id but the Actor key is
> different i.e. on PO1 it is 16385 and on PO2 it is 32768. As per the
> information available about bond0 on linux server which is given below
> Active aggregator ID is 1 which is mapped to eth0 but eth1.
>
> But we have observed that eth1 on linux server is also sending LACPDUS
> with Collecting/Distributing bit set as 1. Which will result in single
> bond interface on Linux server is splitted into multiple port-channels
> on Switch causing duplication of frames on linux server.
>
> As per IEEE 802.3ad 2003 standard portchannel should not support
> multi-aggregation.
>
>
> #  cat /proc/net/bonding/bond0
> Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
>
> Bonding Mode: IEEE 802.3ad Dynamic link aggregation
> Transmit Hash Policy: layer2 (0)
> MII Status: up
> MII Polling Interval (ms): 100
> Up Delay (ms): 0
> Down Delay (ms): 0
>
> 802.3ad info
> LACP rate: fast
> Min links: 0
> Aggregator selection policy (ad_select): stable
> Active Aggregator Info:
>     Aggregator ID: 1
>     Number of ports: 1
>     Actor Key: 17
>     Partner Key: 16385
>     Partner Mac Address: 11:11:22:22:33:33
>
> Slave Interface: eth0
> MII Status: up
> Speed: 1000 Mbps
> Duplex: full
> Link Failure Count: 0
> Permanent HW addr: 08:00:27:18:ae:4b
> Aggregator ID: 1
> Slave queue ID: 0
>
> Slave Interface: eth1
> MII Status: up
> Speed: 1000 Mbps
> Duplex: full
> Link Failure Count: 0
> Permanent HW addr: 08:00:27:76:35:a2
> Aggregator ID: 3
> Slave queue ID: 0
>
>
> Regards,
> Ajith
--
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