Open Source VoIP Traffic Monitoring - Luca Deri - Ntop

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ntop.org Dynamic Packet Filtering [1/2] NAPI User Space Linux Kernel Threading + Bloom Filtering NIC Device Driver NIC Packet Journey echo “+ip=192.168.0.10,port=80” > /proc/net/eth1/rules echo “-proto=tcp” > /proc/net/eth1/rules
ID Intel Driver ntop.org Dynamic Packet Filtering [2/2] Bloom Filters Packet Size Total Input Rate (both adapters) System Load Packet Loss 1 Threaded No filters 900 bytes 270 Kpps 1.14 No 3 Threaded One IP match 900 bytes 270 Kpps 1.66 No 4 Threaded No filters Random 64-1518 5 Vanilla No filters Random 64-1518 6 Threaded One IP match Random 64-1518 890 Kpps 1.34 No 890 Kpps 2.45 Moderate (< 10%) 890 Kpps 1.40 No 7 Threaded No filters 64 bytes 2.89 Mpps 3.68 Moderate ( < 20%; interface counters do not keep up with traffic) 8 Threaded One IP match 64 bytes 2.89 Mpps > 4 Strong (> 20%)
Page 1 and 2: ntop.org Open Source VoIP Traffic M
Page 3 and 4: ntop.org Motivation for This Work
Page 5 and 6: ntop.org Approach Being Used • En
Page 7 and 8: Standard VoIP Protocols • SIP •
Page 9 and 10: PSTN ntop.org Flow-based Monitoring
Page 11 and 12: Standard VoIP: Implemented Metrics
Page 13 and 14: ntop.org ntop VoIP Support: SIP/RTP
Page 15 and 16: ntop.org ntop VoIP Support: Skype [
Page 17: ntop.org Challenges in VoIP Packet
Page 21 and 22: ntop.org 3Com OSM Router/Switch The

Open Source VoIP Traffic Monitoring - Luca Deri - Ntop

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