Iot network env
- 1. Interoperability WG – Network Environment
- 2. 2 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Pure Network RFC 3261 SIP Server QE - Servers (TBD) QE - Server SIP UA DUT Functional Operation QE - UA QE - UAs (TBD) Functional Operation Standard UA SIP MessagesSIP Messages ViTA IOT Test Spec
- 3. 3 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Real Network QE - UAs (TBD) SIP UA DUT Functional Operation Real Network (TBD) QE - Servers (TBD) ViTA IOT Test Spec
- 4. 4 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Real Network Requirements Network Provider HiNet SeedNet … Network Status Report Support Network Impairments Monitoring Support RMON Report … QE-UAs QE-Servers ViTA IOT Test Spec.
- 5. 5 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Network Emulator Network Emulator QE - Servers (TBD) QE - Server QE - UA QE - UAs (TBD) Functional Operation Standard UA SIP UA DUT Functional Operation ViTA IOT Test Spec
- 6. 6 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Network Emulator Requirements Network Emulator Define Network Impairments Reference next pages QE-UAs QE-Servers ViTA IOT Test Spec.
- 7. 7 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Network Emulator - Impairments Latency Packet Loss Packet Effect Link Fault Congestion Bandwidth
- 8. 8 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Latency Fixed Latency A fixed latency value is applied to all packets Configurable parameter: Latency Uniform Distributed Latency A changing latency over time Can emulate jitter condition Configurable parameter: Minimum Latency, Maximum latency delay count delay count
- 9. 9 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Latency Normal Distributed Latency Latency fluctuate randomly and non-uniformly around average value Can emulate jitter condition Configurable parameter: Average, Standard Deviation Linear Latency Latency increase as time increase Can emulate jitter condition Configurable parameter: Minimum Latency, Maximum Latency, Time Duration delay count delay Time
- 10. 10 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Packet Loss Periodic Loss Discards one packet every 2 to 65535 packets Count packets separately on both direction Random Loss Packet losses base on a probability from 0.01% to 100% Bust Loss Packet losses base on a probability from 0.01% to 90% Loss a random number of packets between 1 and 65535
- 11. 12 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Packet Effect Out of Order Base on a probability between 1% and 50%, a packet would be moved from original location with an offset from 1 to 64 packets Duplicate Packets Base on a probability between 1% and 99%, a packet would be duplicated for 1 to 20 copies. Fragmentation MTU can be set from 64 bytes to 1460 bytes Handle “Do Not Fragment” bit TTL Effects A packet’s TTL value could be decreased from 1 to 255 An ICMP message may be returned to the originator of the packet
- 12. 13 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Link Fault Bit Error Toggle one bit every 102 to 1012 bits Toggle from 1 to 500 bit if Bit Error occurs Disconnect Disconnect network from 10 ms to 1 hour All packets are lost during “disconnection”
- 13. 15 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Congestion Congestion occurs every 1 second to 300 seconds A congestion lasts from 10 ms to 120000 ms Fixed latency from 0 ms to 8000 ms Packet loss probability from 0% to 90% Latency and Packet loss setting in Congestion overwrite original setting when Congestion events occur
- 14. 16 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Gateway-Bandwidth Control Bandwidth from 2.4 Kbps to 622 Mbps Packet Overhead Length from 0 to 1000 bytes Bandwidth Utilization from 0 % to 100 % Queue Size from 2 KB to 65 MB Queue Size Policy: Packet Mode or Byte Mode Queue Management: Drop Tail or RED (Random Early Detection)
- 15. Summary
- 16. 18 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Pure Network Adv. 環境單純, 可明確identify DUT defects 可reproduce DUT defects Test Report 較為可靠客觀 Disadv. 只證明Interop 沒問題，Vender自己需進行 Real Network Test Open Issues QE-UAs, QE-Servers
- 17. 19 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Real Network Adv. 可測得DUT 之Robustness 最能滿足Vender需求 Disadv. 往往無法Reproduce DUT defects, 因為造成defects之Network Impairments有太多種組合 Test Report 較不客觀, 最多只能指出當時環境狀況 增加了環境不確定度，加重測試事務與時程 2個run * 3個QE System * 40 Test Cases + Unpredicted Network Status 降低了通過率 Open Issues QE-UAs, QE-Servers Network Provider Network Status Report
- 18. 20 The information contained herein is the exclusive property of ITRI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of ITRI. Network Emulator Adv. 可調整Impairments，使得Emulator Network 接近真實 Impairments可組合，可給設定參數值 可 Reproduce Network Status, 並Identify Defects Disadv. 增加了測試複雜度，加長測試時程 2個run * 2個phase(Network Env.) * 3個QE System*40 Test Cases 降低了通過率 Open Issues QE-UAs, QE-Servers Survey Impairments其組合與參數之合理值範圍