Re: ABORT after COOKIE_ECHO

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Means out of the blue below.
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Em 1 de julho de 2017 14:29:56 BRT, Sun Paul <paulrbk@xxxxxxxxx> escreveu:
>OOTB means?
>
>and below figure is the /proc/net/sctp/snmp, any idea
>
>$ cat  /proc/net/sctp/snmp
>SctpCurrEstab                   0
>SctpActiveEstabs                 26061
>SctpPassiveEstabs               204235
>SctpAborteds                     811874
>SctpShutdowns                   196524
>SctpOutOfBlues                   19104636
>SctpChecksumErrors               3070
>SctpOutCtrlChunks               3515894374
>SctpOutOrderChunks               43687436
>SctpOutUnorderChunks             5244253158
>SctpInCtrlChunks                 3820268182
>SctpInOrderChunks               2553760409
>SctpInUnorderChunks             2741444705
>SctpFragUsrMsgs                 197031085
>SctpReasmUsrMsgs                 207379860
>SctpOutSCTPPacks                 6407590023
>SctpInSCTPPacks                 6719200223
>SctpT1InitExpireds               18041179
>SctpT1CookieExpireds             365
>SctpT2ShutdownExpireds           486
>SctpT3RtxExpireds               4543012
>SctpT4RtoExpireds               0
>SctpT5ShutdownGuardExpireds     2
>SctpDelaySackExpireds           2595840671
>SctpAutocloseExpireds           0
>SctpT3Retransmits               4527700
>SctpPmtudRetransmits             3341
>SctpFastRetransmits             4155577
>SctpInPktSoftirq                 6711421746
>SctpInPktBacklog                 7744553
>SctpInPktDiscards               19253619
>SctpInDataChunkDiscards         4248038
>
>On Sun, Jul 2, 2017 at 1:11 AM, Marcelo Ricardo Leitner
><marcelo.leitner@xxxxxxxxx> wrote:
>> Hi,
>>
>> On Sun, Jul 02, 2017 at 01:02:36AM +0800, Sun Paul wrote:
>>> Hi
>>>
>>> we have a setup that running normal, however, we found that some of
>>> the conenctions are not able to establish and we (server) send ABORT
>>> right after receiving COOKIE_ECHO.
>>>
>>> any idea?
>>
>> Several reasons.. if it's not triggering a duplicate cookie
>processing,
>> it's being processed on sctp_sf_do_5_1D_ce(). Have a look at it to
>have
>> a better idea. Two reasons that stands out are somehow the cookie was
>> interpreted as an OOTB packet or the tcp-style listening socket got
>its
>> backlog full.
>>
>> It can also be due to an out of memory situation, which is not often
>the
>> case.
>>
>> OOTB packets are accounted for in netstat -s or /proc/net/sctp/snmp.
>>
>>   Marcelo
>>

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