Hi Rubina, That’s a tcp protocol startup configuration parameter that can be used to preallocate half-open connections and therefore prevent the underlying pool from expanding. It’s especially useful if you expect applications attached to vpp’s host stack to open a large number of tcp connections.
Florin > On Nov 20, 2018, at 12:29 AM, Andrew Yourtchenko <ayour...@gmail.com> wrote: > > Hi Rubina, > > Thats host stack - so I will let Florin educate us ! ;) > > --a > > On 20 Nov 2018, at 07:09, Rubina Bianchi <r_bian...@outlook.com > <mailto:r_bian...@outlook.com>> wrote: > >> Hi Andrew >> >> So what is preallocated-half-open-connections parameters in tcp tag for? >> >> Reference: >> https://fdio-vpp.readthedocs.io/en/latest/gettingstarted/users/configuring/startup.html >> >> <https://fdio-vpp.readthedocs.io/en/latest/gettingstarted/users/configuring/startup.html> >> From: Andrew 👽 Yourtchenko <ayour...@gmail.com <mailto:ayour...@gmail.com>> >> Sent: Monday, November 19, 2018 5:18 PM >> To: Rubina Bianchi >> Cc: vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io> >> Subject: Re: [vpp-dev] VPP and TCP half-open connection >> >> Hi Rubina, >> >> In case the question pertains to transient TCP sessions in ACL plugin - the >> answer is no - however a new session takes the least recently used TCP >> transient session slot, so there is a natural resource usage balancing. >> >> --a >> >> On 19 Nov 2018, at 14:08, Rubina Bianchi <r_bian...@outlook.com >> <mailto:r_bian...@outlook.com>> wrote: >> >>> Hi Dear VPP >>> >>> Is there any mechanism in VPP to restrict TCP half-open connection count? >>> If answer is yes how it can be configured? >>> >>> Thanks, >>> Sincerely >>> -=-=-=-=-=-=-=-=-=-=-=- >>> Links: You receive all messages sent to this group. >>> >>> View/Reply Online (#11312): https://lists.fd.io/g/vpp-dev/message/11312 >>> <https://lists.fd.io/g/vpp-dev/message/11312> >>> Mute This Topic: https://lists.fd.io/mt/28241090/675608 >>> <https://lists.fd.io/mt/28241090/675608> >>> Group Owner: vpp-dev+ow...@lists.fd.io <mailto:vpp-dev+ow...@lists.fd.io> >>> Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub >>> <https://lists.fd.io/g/vpp-dev/unsub> [ayour...@gmail.com >>> <mailto:ayour...@gmail.com>] >>> -=-=-=-=-=-=-=-=-=-=-=- > -=-=-=-=-=-=-=-=-=-=-=- > Links: You receive all messages sent to this group. > > View/Reply Online (#11325): https://lists.fd.io/g/vpp-dev/message/11325 > <https://lists.fd.io/g/vpp-dev/message/11325> > Mute This Topic: https://lists.fd.io/mt/28241090/675152 > <https://lists.fd.io/mt/28241090/675152> > Group Owner: vpp-dev+ow...@lists.fd.io <mailto:vpp-dev+ow...@lists.fd.io> > Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub > <https://lists.fd.io/g/vpp-dev/unsub> [fcoras.li...@gmail.com > <mailto:fcoras.li...@gmail.com>] > -=-=-=-=-=-=-=-=-=-=-=-
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