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Date:      Wed, 29 Oct 2014 13:09:41 +0000
From:      "Swain, Sachidananda" <Sachidananda.Swain@caviumnetworks.com>
To:        "questions@FreeBSD.org" <questions@FreeBSD.org>
Cc:        "Swain, Sachidananda" <Sachidananda.Swain@caviumnetworks.com>
Subject:   Configuring pipe with random/variable delay in Dummynet
Message-ID:  <1414588221910.58545@caviumnetworks.com>
In-Reply-To: <1414575677311.30811@caviumnetworks.com>
References:  <1402297099047.59041@caviumnetworks.com> <CA%2BhQ2%2BjMNfrWow5hHAYKSbepSYFSaBONxgpbcNtLxp%2BnFL_0yw@mail.gmail.com> <1402378101805.26221@caviumnetworks.com> <20140610060330.GA55903@onelab2.iet.unipi.it> <1402398067353.87644@caviumnetworks.com> <1402493689759.49784@caviumnetworks.com> <CA%2BhQ2%2BhyVBMzpxeeOznuZjtS_oyuBx-c3oLLu_E7ctXwTQZkkg@mail.gmail.com> <1403871049532.44924@caviumnetworks.com> <CA%2BhQ2%2BiLbgnYPV2smSdGxa2Z8FHpzUvUqsJJkCJESzBuKW05-Q@mail.gmail.com> <1404104416765.73557@caviumnetworks.com> <20140630133250.GB3990@onelab2.iet.unipi.it> <1412591558338.83608@caviumnetworks.com> <CA%2BhQ2%2Bh3y0qQoiTN6gHvq=3h4XK1OGBMxohFBsFpaf6tVioQ-w@mail.gmail.com> <1412592530436.80767@caviumnetworks.com> <CA%2BhQ2%2BiAKftUGkjDa08c5PEbRcz14te4MV3=JYZNUY4vhMc1eQ@mail.gmail.com> <1412922706769.82230@caviumnetworks.com> <CA%2BhQ2%2BgNb2RsA0GX7EjtRB-_xG7y8RLZ%2BeC4sX%2Bg3Hcz%2BrBzrQ@mail.gmail.com> <1412930879041.22342@caviumnetworks.com>, <CA%2BhQ2%2BiznC4HN%2BjQtZUURoD8TJMkJFVf3CXyUEvBkmsr%2B8Fcuw@mail.gmail.com>, <1414575677311.30811@caviumnetworks.com>

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Hi,


We are using FreeBSD 10.0-RELEASE on i386 Intel PC with 2GB RAM.


Requirement in Dummynet:

Can we set some variable delay may be 1 to 10 ms through Dummynet in FreeBS=
D.

If Yes, then what would be the command.


Found one article:

http://www.cs.unc.edu/~jeffay/dirt/FAQ/dummynet-modifications.html<http://w=
ww.cs.unc.edu/%7Ejeffay/dirt/FAQ/dummynet-modifications.html>

I didn't find those sysctl variables in FreeBSD 10.0


We followed the procedure to create pipe and configure with delay in Dummyn=
et:

---------------------------------------------------------------------------=
---

Creating Pipe and configuring for Delay

Adding Pipe

ipfw add 100 pipe 1 ip from any to any

OR

ipfw add pipe 1 ip from any to any

OR

ipfw add pipe 1 ip from <IP Address #1> to <IP Address #2>

Configuring Pipe with Delay

ipfw pipe 1 config bw 100Mbit/s delay 0ms

OR

ipfw pipe 1 config delay 0ms

Deleting Pipe

ipfw flush

-----------------------------------------------------------------------


Please support us, how to configure pipe with variable delay. This is our u=
rgent requirement for a test.


Thanks,

Swain

?



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