Changes between Version 36 and Version 37 of GEMINIv1.1Tutorial
- Timestamp:
- 10/23/12 10:48:04 (12 years ago)
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GEMINIv1.1Tutorial
v36 v37 393 393 [[Image(s6.png,border=1)]] 394 394 395 396 397 398 === 3) Configure I&M tools and experiment services === 399 400 ==== 3.1) Configuring Passive measurements ==== 401 395 402 [wiki:GeminiPortal Intro To Gemini Portal] 396 [[BR]] 397 [wiki:PathControllerDemo Path Controller] 398 399 === 3) Configure I&M tools and experiment services === 400 401 ==== 3.1) Configuring Active Measuremens ==== 403 404 405 ==== 3.2) Configuring Active Measuremens ==== 402 406 403 407 … … 409 413 410 414 411 ===== 3. 1.1 Accessing pSConfig UI =====415 ===== 3.2.1 Accessing pSConfig UI ===== 412 416 413 417 To configure active measurements we access the pSConfig Web UI. You can find the URL by clicking on the MC node on the GEMINI portal, or by going to https://<gn node>/psconfig. … … 427 431 [[Image(0-unis.png)]] 428 432 429 ===== 3. 1.2 Enabling Services =====433 ===== 3.2.2 Enabling Services ===== 430 434 431 435 After we've made sure to have a recent copy of the topology information, we can move on to the Manage Services administration page. On this page we will enable the services required to perform on-demand and regularly scheduled tests. We start by enabling the one-way latency services on VM1. Make sure to save the changes before continuing to the next node. … … 453 457 454 458 455 ==== 3. 2Configuring Regular Active Measurements ====459 ==== 3.3 Configuring Regular Active Measurements ==== 456 460 457 461 Enabling the OWAMP and BWCTL daemons is all we need to perform on-demand active measurements. However, it's usually better to have active measurements running regularly to analyze the performance over time. Throughput and ping tests can be scheduled with a given interval (e.g. every 30 minutes). One-way delay tests are scheduled as a stream (a constant amount of packets is sent per second). … … 482 486 [[Image(10-unis-push.png)]] 483 487 484 ===== 3. 2.1 Applying the Configuration =====488 ===== 3.3.1 Applying the Configuration ===== 485 489 486 490 pSConfig will pull the node's configuration from UNIS every 30 minutes (from the time it was started, not hh:00 and hh:30). Since we don't want to wait this long to start gathering data, we can restart pSConfig on each node by clicking the Apply Config link. This is achieved by ssh'ing to the node and restarting pSConfig, so errors are usually ssh related. … … 493 497 494 498 === 4) Run and orchestrate I&M services and experiment services to complete run of experiment === 495 496 497 4.1) Initial setup: start basic host measurements and basic ping active network measurements 498 499 - objectives: 500 - verify functionality of hosts 501 - verify topology of slice 502 503 - observe measurements with a real-time presentation service 504 505 - continue measurements throughout duration of the test/tutorial/experiment 506 507 - at completion: 508 - functionality of hosts and topology of slice has been verified throughout duration of the experiment 509 510 511 4.2) Continuity test: for a limited time, run iperf active network measurements 512 513 - objectives: 514 - verify ability of slice to carry traffic expected from experiment 515 516 - observe measurements with a real-time presentation service 517 518 - once satisfactory measurements have been observed, stop continuity test 519 520 - at completion: 521 - capability of slice to carry traffic expected from experiment has been verified 522 523 524 4.3) Instrument and run experiment: 525 526 - objectives: 527 - gather measurements during experiment that allow experiment goals to be met 528 529 - include desired measurement points within hosts and/or experiment services to instrument test/tutorial/experiment 530 531 - begin to run and orchestrate measurement services 532 533 - begin to run and orchestrate experiment services 534 535 - observe measurements with a real-time presentation service, to verify expected operation of experiment 536 537 - collect all measurements for duration of experiment 538 539 - stop experiment services, when this run of the experiment has been completed 540 541 - stop measurement services 542 543 - at completion: 544 - one run of experiment has been completed 545 - real-time look at measurements has verified expected operation of experiment 546 - a full set of measurements has been collected, for later analysis and presentation 547 - collected measurements have been transferred to storage service, so that slice resources can be released (if desired) 548 549 4.4) Store collected measurements and other artifacts from test/tutorial/experiment in storage service 550 551 - at completion: 552 - collected measurements and other artifacts have been transfered to storage service 553 - collected measurements and other artifacts are available for later analysis 554 - slice resources can then be released at any time, without loss of any measurements or artifacts 555 499 [[BR]] 500 [wiki:PathControllerDemo Path Controller] 501 502 556 503 === 5) Analyze and visualize measurement results after completing run of experiment === 557 504