Re: Fwd: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-26 Thread Neil Horman
On Fri, Jan 23, 2015 at 01:30:55PM -0500, Vlad Yasevich wrote: > On 01/23/2015 12:10 PM, Daniel Borkmann wrote: > > On 01/23/2015 05:05 PM, Vlad Yasevich wrote: > >> On 01/23/2015 06:50 AM, Daniel Borkmann wrote: > >>> On 01/23/2015 11:25 AM, Sun Paul wrote: > >>> ... > I would like to check t

Re: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-26 Thread Daniel Borkmann
On 01/26/2015 02:17 PM, Sun Paul wrote: When an ABORT is sent to side-A, side-A INIT a new connection again. Even if the ABORT is not being sent, the peer (the one who would send his ABORT) closes the TCB from his side silently then. Any messages that would afterwards arrive on this dead connec

Re: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-26 Thread Sun Paul
When an ABORT is sent to side-A, side-A INIT a new connection again. On Mon, Jan 26, 2015 at 7:46 PM, Marcelo Ricardo Leitner wrote: > Hi, > > On 25-01-2015 23:27, Sun Paul wrote: >> >> Hi >> >> sorry for the late reply. I am a bit confused. when side-A sends a >> request to side-B, and side-B re

Re: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-26 Thread Marcelo Ricardo Leitner
Hi, On 25-01-2015 23:27, Sun Paul wrote: Hi sorry for the late reply. I am a bit confused. when side-A sends a request to side-B, and side-B return the response, but side-A keep re-transmit the same request to side-B, why side-B needed to send a ABORT to side-A? That happens on data transfers

Re: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-25 Thread Sun Paul
Hi sorry for the late reply. I am a bit confused. when side-A sends a request to side-B, and side-B return the response, but side-A keep re-transmit the same request to side-B, why side-B needed to send a ABORT to side-A? If it is used in order to reestablish the connection, shoudn't it should be

Re: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-23 Thread Michael Tuexen
> On 23 Jan 2015, at 18:10, Daniel Borkmann wrote: > > On 01/23/2015 05:05 PM, Vlad Yasevich wrote: >> On 01/23/2015 06:50 AM, Daniel Borkmann wrote: >>> On 01/23/2015 11:25 AM, Sun Paul wrote: >>> ... I would like to check the behave in LKSCTP. we are running DIAMETER message ove

Re: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-23 Thread Michael Tuexen
> On 23 Jan 2015, at 19:30, Vlad Yasevich wrote: > > On 01/23/2015 12:10 PM, Daniel Borkmann wrote: >> On 01/23/2015 05:05 PM, Vlad Yasevich wrote: >>> On 01/23/2015 06:50 AM, Daniel Borkmann wrote: On 01/23/2015 11:25 AM, Sun Paul wrote: ... > I would like to check the behave in L

Re: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-23 Thread Daniel Borkmann
On 01/23/2015 07:36 PM, Michael Tuexen wrote: ... Yepp. It might not reach the peer or it might. If it does it helps to keep the states in sync. If it doesn't it sometimes helps in analysing tracefiles. In BSD, we also send it. It is not required, doesn't harm and is useful in some cases... Ok,

Re: Fwd: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-23 Thread Vlad Yasevich
On 01/23/2015 12:10 PM, Daniel Borkmann wrote: > On 01/23/2015 05:05 PM, Vlad Yasevich wrote: >> On 01/23/2015 06:50 AM, Daniel Borkmann wrote: >>> On 01/23/2015 11:25 AM, Sun Paul wrote: >>> ... I would like to check the behave in LKSCTP. we are running DIAMETER message over SCTP, a

Re: Fwd: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-23 Thread Daniel Borkmann
On 01/23/2015 05:05 PM, Vlad Yasevich wrote: On 01/23/2015 06:50 AM, Daniel Borkmann wrote: On 01/23/2015 11:25 AM, Sun Paul wrote: ... I would like to check the behave in LKSCTP. we are running DIAMETER message over SCTP, and we have set the parameter "net.sctp.association_max_retrans = 4" in

Re: Fwd: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-23 Thread Vlad Yasevich
On 01/23/2015 05:25 AM, Sun Paul wrote: > Hi > > I would like to check the behave in LKSCTP. > > we are running DIAMETER message over SCTP, and we have set the > parameter "net.sctp.association_max_retrans = 4" in the LinuxOS. > > We noticed that when remote peer have retry to send the same requ

Re: Fwd: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-23 Thread Vlad Yasevich
On 01/23/2015 06:50 AM, Daniel Borkmann wrote: > Hi, > > On 01/23/2015 11:25 AM, Sun Paul wrote: > ... >> I would like to check the behave in LKSCTP. >> >> we are running DIAMETER message over SCTP, and we have set the >> parameter "net.sctp.association_max_retrans = 4" in the LinuxOS. >> >> We no

Re: Fwd: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-23 Thread Daniel Borkmann
Hi, On 01/23/2015 11:25 AM, Sun Paul wrote: ... I would like to check the behave in LKSCTP. we are running DIAMETER message over SCTP, and we have set the parameter "net.sctp.association_max_retrans = 4" in the LinuxOS. We noticed that when remote peer have retry to send the same request for 4

Fwd: Question on SCTP ABORT chunk is generated when the association_max_retrans is reached

2015-01-23 Thread Sun Paul
Hi I would like to check the behave in LKSCTP. we are running DIAMETER message over SCTP, and we have set the parameter "net.sctp.association_max_retrans = 4" in the LinuxOS. We noticed that when remote peer have retry to send the same request for 4 times, the LKSCTP will initiate an ABORT chunk