RIPE NCC Measurements Tools Workshop

Transcription

1 RIPE NCC Measurements Tools Workshop Solutions Booklet September 2014

2 Introduction These exercises are part of the RIPE NCC Measurements and Tools Workshop they should help you to better understand the tools that the RIPE NCC provides. This course material and available updates can be found at: We hope you enjoy this course Vesna Manojlovic, Ferenc Csorba, Christian Teuschel September 2014 "2

3 RIPE NCC Tools Workshop September 2014 "3

4 Exercise A: Querying for a Resource in RIPEstat Tasks: In this exercise, you are going to use RIPEstat to query for resources (IP address ranges, AS Numbers) and find out more details about them. 1. Go to RIPEstat: 2. What network announces ? /16 from AS Is routed? Yes, it is announced by DTAG AS In which country is /23 used? Uzbekistan 5. What is its corresponding inetnum object? /22 6. What widget provides real-time routing status? Looking Glass 7. By what percent did the number of prefixes announced within Greece increase over the last two years? to : 12% ASN: ~ 3% IPv4: ~ 16% IPv6: ~ 63% 8. How would you share interesting network events with a colleague? After querying the resource in question, and setting the optimal zoom and/or timescale, use the permalink button on the result page or for an individual widget. September 2014 "4

5 Exercise B: BGPlay Tasks: In this exercise use the BGPlay widget to find the answers. 1. Go to RIPEstat: 2. After making a query, find the BGPlay widget on the Routing tab. 3. Find the up-stream provider for AS1205: AS1853 (go to stat.ripe.net/ bgplay and enter AS1205) 4. Is AS3333 multi-homed? Yes (e.g. AS1103, AS1299, etc.) 5. Check the IPv6 connectivity of your own network: Type in your IPv6 prefix and see whether there are any networks connecting your AS. September 2014 "5

6 Exercise C: Handling Abuse Tasks: In this exercise, you will find who to contact in the case of abuse (hacking, spamming, etc.). 1. What is the abuse contact for ? 2. What is the abuse contact for the hotel network? Go to stat.ripe.net, find the hotel s network under Your network, query this network and find the abuse contact from the Anti-abuse Contact Finder widget. 3. What is the abuse contact for your home network Look up an IP address from your prefix and find the abuse contact from the Anti-abuse Contact Finder widget. 4. Discussion: What can you do in the following cases? No abuse contact found: Find the website of the company that is holding this address space and try to find a contact there. Because of ripe-563, which makes having an abuse contact mandatory, these cases are becoming rarer, but dealing with invalid abuse contacts or getting no reply cases are becoming more frequent. No response to an abuse report: Again, find the website of the company and try to find a contact there. Some companies ignore s sent to the abuse contact, which is a known problem. September 2014 "6

7 Exercise D: MyView Tasks: In this exercise, you will use the MyView feature to select and arrange the RIPEstat widgets that you would like to have in your own personalised tab. 1. Create a RIPE Access account (if you don t already have one): 2. Create a MyView tab for a prefix containing the following widgets: Routing Status Looking Glass Routing History Create a MyView tab and drag and drop the mentioned widgets (click on their title and drag) to the newly created MyView tab. 3. Create another MyView tab with a least two widgets and give it a meaningful name. September 2014 "7

8 Exercise E: Comparing Results in RIPEstat Tasks : In this exercise you will compare results in RIPEstat. 1. No login required. 2. At the top of the RIPEstat page, go the the Use Cases > Compare Results menu. 3. Add widgets AND query for a resource (IP address, ASN, etc.) for each widget. First select a widget from the drop down list, then enter a resource (IP or ASN). By hovering over the input box for the resource, you will see what resources are supported. Click Add and the widget with the given resource will appear in the space below. The maximum number of widgets you can compare at one time is six. 4. You will get a results page with widgets and data. Share this page via a permanent link. Use the permalink button to create the permalink and then copy it to share it. September 2014 "8

9 Exercise F: RIPEstat Use Cases Tasks : In this exercise we discuss common issues that network operators may encounter and try to solve them using RIPEstat. September 2014 "9

10 Exercise G: Analyse The Result of RIPE Atlas measurement Tasks : In this exercise you will analyse the output of a public ping measurement. For this purpose, we use measurement with ID , which is an IPv6 ping measurement targeting You can also access other measurements either by using the measurement overview in RIPE Atlas or the RIPE Atlas Measurement Target widget in RIPEstat. RIPE Atlas: Measurement data since : measurement/ /result/?start= Find out how many times the RTT was above 60ms, either by using Python or Javascript. For the Javascript solution, you can use this as a starting point: Python: 1. Save the measurement(s) locally curl start= > measurement.json 2. Parse json and find total avg: import json f = open( measurement.json, r ) measurements = json.load(f) for m in measurements: for r in m[ result ]: rtt = r[ rtt ] if rtt > 60: i += 1 September 2014 "10

11 i must be > than Javascript: <script> var dataapiurl = " jquery.ajax({ }); url: dataapiurl, error: function() { }, alert("error"); success: function( response ) { }, var i = 0; for ( var i = 0, n = response.length; i < n; i++) { } var measurement = response[i]; for ( var j = 0, m = measurement.result.length; j < m; j++) { var rtt = measurement.result[j].rtt; console.log(rtt); if (rtt > 60) i++; } jquery("p").html("the RTT has been above 60ms for " + i + " times"); datatype: "jsonp" </script> September 2014 "11

12 Exercise H: Create A RIPE Atlas Measurement Tasks : In this exercise you will create a simple ping measurement towards a target of your choice. This measurement should only run for two days. 1. Log into the RIPE Atlas website and go to My Atlas > Measurements. 2. On the bottom of this page, create a new measurement under New Measurement. For details on how to create this specific measurement, see the slides about creating a measurement. September 2014 "12

13 Exercise I: Set Up Status Check with RIPE Atlas Tasks : In this exercise you set up and configure a Status Check for an existing IPv6 ping measurement targeting Configure the Status Check in such a way that you will get an alert for this measurement. Set the median RTT to a lower level: median_rtt_threshold=10 September 2014 "13