1、Analyze Assure Accelerate思博倫思博倫MSTPMSTP測試儀表技術培訓測試儀表技術培訓nalyze Assure Accelerate議程議程MSTP回顧回顧MSTP測試內容測試內容MSTP測試原理及方法測試原理及方法思博倫通信概況思博倫通信概況SmartBits基礎知識基礎知識Analyze Assure AccelerateMSTP回顧回顧多業務傳輸平臺多業務傳輸平臺核心是核心是SDH之上的包交換之上的包交換或信元交換或信元交換特征是能提供以太網、特征是能提供以太網、ATM或或POS支路板支路板工作在一到三層，或者四工作在一到三層，或者四層

2、層Analyze Assure AccelerateMSTP測試內容測試內容SDH傳統測試項目傳統測試項目光功率、眼圖、頻偏光功率、眼圖、頻偏誤碼、抖動、抖動容限誤碼、抖動、抖動容限開銷、告警開銷、告警保護倒換時間保護倒換時間Ethernet接口測試接口測試幀格式幀格式自協商自協商異常包處理異常包處理流控流控Analyze Assure AccelerateMSTP測試內容測試內容Ethernet交換測試交換測試RFC2544基準測試基準測試吞吐量、丟包、時延、背靠背RFC2889測試測試地址學習能力頭端阻塞轉發能力廣播復制能力超線速轉發VLAN隔離測試隔離測試STP協議測試協議測試IGMP組

3、播測試組播測試Analyze Assure AccelerateMSTP測試內容測試內容ATM測試測試CBR、VBR、UBR業務類型測試業務類型測試吞吐量、信元傳輸時延、信元抖動容限、信元糾錯吞吐量、信元傳輸時延、信元抖動容限、信元糾錯流控、信元丟棄優先級流控、信元丟棄優先級OAM信元測試信元測試Analyze Assure AccelerateMSTP測試內容測試內容MSTP系統測試系統測試業務層保護倒換時間業務層保護倒換時間帶寬共享帶寬共享優先級測試優先級測試Analyze Assure AccelerateMSTP測試原理及方法測試原理及方法Ethernet接口測試接口測試幀格式幀格式8

4、02.3Ethernet II AA AA AA AA AA AA AA /AB 7/1 Bytes Preamble/Start of Frame 6 6 2 Dest . Addr . Src . Addr . Length 4 FCS 32 Data 46 to 1500 bytes 2 6 2 Length Snap Hdr . Ether Type AAAA030000008858 = IP 4 FCS 32 Data 46 to 1500 bytes Ether Type 6 6 2 Dest . Addr . Src . Addr . 2 AA AA AA AA AA AA AA

5、 AA 8 Bytes Preamble Analyze Assure AccelerateMSTP測試原理及方法測試原理及方法Ethernet接口測試接口測試異常包處理異常包處理OverSized（1518bytes）UnderSized（ Test ConfigurationAnalyze Assure AccelerateSetup PreferenceAnalyze Assure AccelerateLayer 2 Learning - “Router Test” UncheckedThe MAC Address table update shown below occurs at t

6、he beginning of a test (i.e., during the Learning Phase).Traffic is shown in only one direction (i.e., uni-directional).When you send Bi-directional traffic the table update will occur in both directions.1. Card # 2 Sends a Learning Packet to Bridge 3. Card # 1 Sends Traffic to Card # 22. Bridges MA

7、C Address Table is UpdatedCard #1(DA) MAC=000000000002(SA) MAC=000000000001Card #2(SA) MAC=000000000002DUT= Layer 2 BridgeBridge MAC Address TablePort 2=MAC 000000000002Port 1Port 2Analyze Assure AccelerateLayer 3 Learning - “Router Test” CheckedThe ARP exchange below occurs at the beginning of a te

8、st (i.e., during the Learning Phase).This exchange describes traffic in only one direction (i.e., uni-directional).When you send Bi-directional traffic the exchange will occur in both directions.1. Card #1 Sends a Packet to Card #22. Causes Router to ARP Card #23. Card #2 sends an ARP Reply5. Card #

9、1 Sends test Packets to Card #24. Routers ARP Cache is UpdatedCard #1Protocol=IPMAC Dest=080002068922MAC=000000000001Card IP=192.168.99.2Routers IP=192.168.99.1Card #2Protocol=IPMAC Dest=080002898856MAC=000000000002Card IP=192.168.88.2Routers IP=192.168.88.1DUT=Layer 3 RouterProtocol=IPMAC Port1=080

10、002068922IP Port1=192.168.99.1MAC Port2=080002898856IP Port2=192.168.88.1Port 1Port 2Analyze Assure AccelerateViewing Test Progress/ResultsAll information, in detail, is written in the Log File for each testConcise information is written into a text Report File which is time stampedEach test is writ

11、ten into an “Excel Spreadsheet like” tableFiles can be save as an Excel spreadsheet, delimited, text, etc.Analyze Assure AccelerateViewing the Test LogThis is the most important section! You MUST check the Log File to be sure that the test ran correctly!Analyze Assure AccelerateWhat is SmartWindow?F

12、ront Panel GUI of the SmartBits Chassis.Analyze Assure AccelerateLAN-3201B 1000Base-X GBIC SmartMetrics Module TX/INIT Off - Not Transmitting Red - Card not Initialized Green - TransmittingRX/ERR Off - Not Receiving Green - Receiving Red - RX Error EventMGMT/PAUSE Off - No Trigger or Pause Green - R

13、X Trigger Event - RX Pause FramesLINK - No Link Detected Green - Full DuplexAnalyze Assure AccelerateTraditional Transmit Setup windowAnalyze Assure Accelerate10/100 Traditional Card CapabilitiesPreambleFCSBackground Pattern (Increment, Decrement, Toggle, Random, Constant, Custom)VFD1 1-6VFD2 1-6VFD

14、1&2 1-6 Bytes-Variable Field increment, decrementtoggle, random, constantGenerate/DetectDribble Bit ErrorsIPG100Mbps Gap880ns - 1.6S in40 ns incrementsGenerate/DetectAlignment Errors10Mbps Gap8800 ns - 1.6S400 ns incrementsGenerate/DetectCRC ErrorsBackground: Could Cover Entire Frame, or be Over

15、written By VFDsVFD3: Generate Streams of Traffic with Changing Content (Cyclical), custom MAC addressing, and/or Any Type of Protocol at full wire-rate speed!Check incoming packets for undersize, oversizeData Length 0-8Kbytes Long (depending on the card)Generates Runts and Jabbers2 Triggers 1-6 Byte

16、s anywhere in framePreambleDestinationSourceTypeDataFCSSmartBits Generated FrameEthernet Version 2 FrameUpper Layer ProtocolVFD3 1-2048 BytesBackground FillVFD3 CyclicalAnalyze Assure AccelerateMaximum Frame Rates Reference Size Ethernet (pps) Fast Ethernet (pps)Gigabit Ethernet (pps) 6414,880 148,8

17、09 1,488,095 128 8,445 84,459 844,594 256 4,528 45,289 452,898 512 2,349 23,496 234,9621024 1,197 11,973 119,7311280 961 9,615 96,1531518 8128,127 81,274How to calculate the maximum frame rate:Gap = 96 bitsPreamble = 64 bitsFrame Size = 8 N bits (N = number of bytes)Speed = 10,000,000 (Ethernet), 10

18、0,000,000 (Fast Ethernet), 1,000,000,000 (Gigabit Ethernet) in bits per second (bps)Maximum Frame Rate = Speed (Gap + Preamble + Frame Size)Analyze Assure AccelerateAlternate Transmit SetupYou can mix alternate frames in with the main traffic streams.Analyze Assure AccelerateReceive Trigger Setup Co

19、ntinuedThis is the Receive Trigger setup screen.Analyze Assure AccelerateConfiguring SmartMetrics TestsFirst, configure a Ports Network Interaction.Set up the Ports Speed, Duplex, and if you want it to obey Flow Control.Next, configure a Ports Frame Content.Set up the cards Layer 3 protocol stack (P

20、ort Setup or Layer 3 Setup).Set up the port-wide “global” parameters (Transmit Setup).Set up the Streams (Transmit Setup).Finally, set up and run a particular SmartMetrics test.ARP (Address Resolution Protocol) Exchange TimesSequence Tracking Latency per VTELatency DistributionSequence + LatencyLate

21、ncy Over TimeFrame VariationRaw Packet TagsAnalyze Assure Accelerate10/100 Cards Network InteractionObey Pause flow control?10 vs. 100 MegabitFull vs. Half DuplexIn order to change the speed and duplex settings of a card, you must the Allow MII Auto-Negotiate box in the Fast Ethernet section of the

22、Preferences window, (or modify the MII register settings).Analyze Assure AccelerateConfiguring Frame ContentTo access the Streams Setup window, select Transmit Setup with the port in SmartMetrics ModeStreams Setup Window (Multiple Streams)Analyze Assure AccelerateViewing Test ResultsThere are a numb

23、er of ways to view test results, depending on the type of test you run, and the type of cards you use. - provide a running tally of events that occur during transmission. - allows you to view the contents of the network traffic. - provide an intuitive, quick status check of test conditions. - provid

24、e relational information about the frames in the test streams (SmartMetrics mode only).Analyze Assure AccelerateSmartCounters DisplayAnalyze Assure AccelerateCapture DisplayAnalyze Assure AccelerateHistograms (SmartMetrics Tests)Results windowAnalyze Assure AccelerateLatency Over Time TestYou specif

25、y a time period (e.g., 1 millisecond increments) and the test stores results in up to 16,384 data collectors.The test records all packets received with timestamp data and calculates the min/max/average latency for all currently active streams.Analyze Assure AccelerateFrame Variation TestPackets that

26、 were transmitted at regularly-spaced intervals can be delayed once they enter the network and arrive at varying intervals, due to factors such as jitter, or the devices buffering.The Frame Variation test measures variations in how closely one packet follows another in a stream.Analyze Assure Accele

27、rateSpirent SolutionVLAN測試測試優先級優先級(IEEE 802.1p), 加標簽加標簽 (IEEE 802.1Q) 到不加標簽到不加標簽每端口多個每端口多個VLAN IP單播和組播流的混合單播和組播流的混合端到端流量測試端到端流量測試配置簡單配置簡單基于地址或端口的優先級基于地址或端口的優先級支持各種拓撲結構：全網狀連接，部分網支持各種拓撲結構：全網狀連接，部分網狀連接和端口一對一狀連接和端口一對一Analyze Assure Accelerate產品演示吞吐量測試產品演示吞吐量測試Results in % Utilization, Frames/Sec, or Bit

28、s/Sec Throughput (maximum forwarding rate with zero packet loss) per flow and group User-defined acceptable loss and control over the search technique binary or step Easily plot against load or frame size Receive bit rate per user-defined groupAnalyze Assure AccelerateFrame Loss TestWhat are the loa

29、d tolerance limits? Do they vary depending on frame size and/or randomly sent and randomly sized traffic?Were frames lost evenly or in large blocks at the beginning or end?What frames are in and out of sequence?Analyze Assure AccelerateLatency TestDue to buffering, bursty traffic may cause latency to vary more than evenly spaced frames.Unlike other testers, SmartFlow and SmartBits support large numbers of flows even while transmitting very bursty traffic.Analyze Assure AccelerateLatency Distribution TestReveals jitter an