Re: Multi-homing question

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Dear Neil,

Attached file is our tcpdump.
Now our secondary IP doesn't work.
Please advise. Thanks.

IP info:
lksctp primary IP is 172.28.129.49
lksctp secondary IP is 172.28.129.176

Client IP is 10.82.29.240/10.82.29.241





Regards,
Andrew

On Thu, Nov 7, 2013 at 10:43 AM, tsoi andrew <tsoiandrew@xxxxxxxxx> wrote:
>  Dear Neil,
>
> For more information, our secondary IP doesn't response COOKIE_ECHO
> also. Only our primary IP can response COOKIE_ECHO with COOKIE_ACK.
>
> Regards,
> Andrew
>
> On Thu, Nov 7, 2013 at 10:36 AM, tsoi andrew <tsoiandrew@xxxxxxxxx> wrote:
>> Dear Neil,
>>
>> Please find my network diagram first.
>> Now at server side, can't see our lksctp client 4 connection but only
>> 2 2 connection.  The reason is that heartbeat ACK not found.
>>
>> Regards,
>> Andrew
>>
>> On Mon, Nov 4, 2013 at 8:09 PM, Neil Horman <nhorman@xxxxxxxxxxxxx> wrote:
>>> On Mon, Nov 04, 2013 at 09:59:44AM +0800, tsoi andrew wrote:
>>>> Dear Sir,
>>>>
>>>> I got a problem when set multi-homing to active/active.
>>>> That mean, It is expected that our lksctp server have 2 IP to connect
>>>> 2 IP of destination client with total 4 connections.
>>>> The flow is that client send "INIT" message with 2 (primary and
>>>> secondary) IP to our server and lksctp server return INIT_ACK. But
>>>> when second client send 'heartbeat' to us, lksctp server cannot return
>>>> ACK.
>>>> Moreover, we already proved our connectivity correct because when our
>>>> lksctp server send heartbeat to both destination client and they can
>>>> return ACK.
>>>> Would you mind sharing if lksctp lib already configure those
>>>> multi-homing purpose.
>>>>
>>> Can you provide a network diagram and a tcpdump of your connection?
>>> Neil
>>>
>>>>
>>>>
>>>> Best Regards,
>>>> Andrew Tsoi
>>>> --
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Attachment: sctpmultiHomeNow.pcap
Description: Binary data


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