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Kernel Recipes 2015: Kernel packet capture technologiesAnne Nicolas
Sniffing through the ages
Capturing packets running on the wire to send them to a software doing analysis seems at first sight a simple tasks. But one has not to forget that with current network this can means capturing 30M packets per second. The objective of this talk is to show what methods and techniques have been implemented in Linux and how they have evolved over time.
The talk will cover AF_PACKET capture as well as PF_RING, dpdk and netmap. It will try to show how the various evolution of hardware and software have had an impact on the design of these technologies. Regarding software a special focus will be made on Suricata IDS which is implementing most of these capture methods.
Eric Leblond, Stamus Networks
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Smart Network Interface Cards (SmartNICs) are increasingly being deployed in cloud data centers to offload inline network processing tasks from server CPUs, thereby improving system throughput while freeing up server CPU cycles for application processing. The match/action and tunnel handling semantics of SmartNIC datapaths can be either expressed directly in the P4 language, be defined by virtual switching software like Open vSwitch (implementing the semantics of a specification like OpenFlow), or by using a combination of these. This presentation compares these approaches, considering aspects like the expressiveness and performance of the resulting datapath as well how these datapath variants can be integrated into existing cloud management systems (e.g. OpenStack).
Johann Tönsing
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Johann is a recognized industry expert in SDN, Linux-based networking technologies, network virtualization, security, and NFV. Johann has been an active contributing member and has been nominated to leadership roles in multiple standards bodies related to SDN and NFV. As Netronome’s Chief Architect, Johann leads all aspects of Netronome’s product design and development, with heavy emphasis on advanced and open server-based networking technologies where he also holds multiple patents. He holds a Masters of Engineering in Electronics.
Presentation of the Conference paper: "Empirical Analysis of IPv6 Transition Technologies Using the IPv6 Network Evaluation Testbed" in Tridentcom 2014, Guangzhou , China
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Neil will present you the history of Device Tree from its origins, how it has been used for ARM from the PowerPC codebase, all the very different current usage and an overview of its future application and evolutions.
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Caso de estudio: Instalando 64 E1 con Elastix
1. A Case Study of Installing
48 E1 with Elastix
Belief Mo
www.openvox.cn
2. Agenda
l The Background
l The Past
l The Present
l A Successful Case Study
l The Challenges
l The Solutions
l The Results
l The Future
3. The Background
l The Past
l A brief history
l Asterisk in 2002
l OpenVox in 2002
l trixbox CE in 2006
l FreeIris (Asterisk-based) in 2007
l AsterCC (Asterisk-based) in 2007
l FreeSWITCH in 2008
l Elastix (Chinese Version) in 2010
4. l The Present
l Asterisk
l Asterisk Community
l Elastix Community (Largest)
l trixbox Community
l Other asterisk-based software communities
l FreeSWITCH
l FreeSWITCH-CN Google/QQ Group
19. l Hardware Configuration
l 6 D430 set as NET
l 6 D430 set as CPE
l Winsip calls NET->E1->CPE->answer and play
audio.
20.
21. Step 2
l Software Configuration
l lspci (recognize D430, must be V1.5 to support 12
cards to work together.)
22.
23. l ulimit -n (asterisk supports max 1024 files by
default, 12 cards will need 12288 files.)
24. l load driver, 1488 channels (31*4*12=1488)
l cat/proc/interrupts {only one(#26) IRQ # is
registered by one wct4xxp; it’ll be 12 before IRQ
agent}
35. l The Results
l 70%-580% CPU loads
l The System is very stable.
l Great Voice Quality
l The Largest Density Installation that We’ve done
with Elastix
36. Agenda
l The Background
l The Past
l The Present
l A Successful Case Study
l The Challenges
l The Solutions
l The Results
l The Future
37. The Future
l The Challenge - Are we ready for this fast-
growing market?
l OpenVox
l 8/16 port E1 products
l Hot-plug VoIP gateway
l Elastix