[ovs-dev] [PATCH 2/2] bond: Sending learning packets on active-backup.

[Yi Zhang]

Host (eth1 and eth2) <=== external-switch <--- test.traffic

Sent from my iPhone

> On Sep 15, 2014, at 10:58 PM, Ben Pfaff <blp at nicira.com> wrote:
> 
> Where does the traffic forwarded to bond0 come from, and how is it
> forwarded to the bond?
> 
>> On Mon, Sep 15, 2014 at 10:44:50PM -0500, Yi Zhang wrote:
>> I added a bond interface consisted of eth1 and eth2 in active-backup mode.
>> 
>> Test traffic was sent to bond. 
>> 
>> Sent from my iPhone
>> 
>>> On Sep 15, 2014, at 10:39 PM, Ben Pfaff <blp at nicira.com> wrote:
>>> 
>>> Please explain the scenario better.
>>> 
>>> Is the test traffic received on eth1 or eth2?  Or is received on some
>>> other interface and being sent out bond0?
>>> 
>>>> On Mon, Sep 15, 2014 at 10:36:43PM -0500, Yi Zhang wrote:
>>>> The test traffic was sent to bond0.  Traffic appears to be received
>>>> from active eth1 and backup eth2.  This means the backup eth2
>>>> responded to arp which is not expected in the active-backup mode.
>>>> 
>>>> Sent from my iPhone
>>>> 
>>>>> On Sep 15, 2014, at 10:04 PM, Ben Pfaff <blp at nicira.com> wrote:
>>>>> 
>>>>> Why are you sending your question as a reply to a thread from 2012?
>>>>> 
>>>>>> On Mon, Sep 15, 2014 at 09:50:42PM -0500, Yi Zhang wrote:
>>>>>> I am testing OVS bonding in active-backup mode (eth1 and eth2).
>>>>>> However I am seeing packets being TX from both eth1 and eth2.  That is
>>>>>> not what I would expect.  Any help would be appreciated.
>>>>> 
>>>>> I suspect that your tcpdumps are showing a packet going out from eth1
>>>>> and then coming back, through the first-hop switch, on eth2 (or vice
>>>>> versa).  I don't know how to tell whether this is happening from tcpdump
>>>>> output.