1. What I carry in my Toolbox Bob Riddle, Internet2 20 April 2004 Advanced Collaborative Applications and Abilene

2. What neighborhood am I in?  Silly questions worth answering Is it Unicast or Multicast? Is it Streams or packets (TCP/UDP)? How big a road do you need (Bandwidth)? – can’t land a 747 in your backyard Who else is on the road? – don’t punish your neighbors! – the NOC is your friend! (really!)

3. What’s different about Multicast? What if your home telephone were multicast instead of unicast? Anyone old enough to remember when your home phone was a “party line”? Anyone old enough to remember TV before the cable TV & satellite TV? –“Broadcast” to local area – cable/satellite TV kind of like “multicast”, lets you tune to a non-local “broadcast” channel The language, acronyms, the protocols IGMP (v1, v2, v3) PIM, MSDP, RP, BSR You can either become a network engineer or …

4. 1 st step: is there any hope? See if you’re on a multicast-capable network http://detective.internet2.eduhttp://dast.nlanr.net/Projects/Beacon/ If Multicast Capable: Yes – things will likely work just fine … except for when they don’t (test for more than 5 minutes!)

5. 2 nd step: Will it work from here to there? Make sure you can get there without multicast Detective – E2E bandwidth test Use old-fashion tools: ping, traceroute, ftp Try a simple multicast application Vic, rat, sdr - http://www.openmash.org/http://www.openmash.org/ Listen to some multicast stream - http://multicast.internet2.edu/wg-multicast- sources.shtml http://multicast.internet2.edu/wg-multicast- sources.shtml Peek at your network ethereal - http://www.ethereal.com/http://www.ethereal.com/ If all this works for you – test your application!

6. 3 rd step: What can I do if nothing works? Check out your own neighborhood Can I run “vic” between 2 users in my office? in my building? Across my campus? Share your discoveries with your NOC If you live in a nice neighborhood, check out some other neighborhoods … Share your discoveries with your NOC Encourage them to share this with your uplink ISP If you live in a bad neighborhood … Find a friend in a good neighborhood (rcBridge)rcBridge

7. 4 th step: be nice! Check your wireless connection Do “tiny” test, if multicast works, please inform your NOC – don’t do this intentionally Don’t suck the pipe dry! Find out how the size of your “pipe” Find out required bandwidth for application – http://www.ethereal.com/ http://www.ethereal.com/ – http://www.etherpeek.com/products/etherpeek_nxhttp://www.etherpeek.com/products/etherpeek_nx

8. Other useful tools  http://www.pingplotter.com/ http://www.pingplotter.com/  http://www.insecure.org/nmap/ http://www.insecure.org/nmap/  http://dast.nlanr.net/Projects/Beacon/ http://dast.nlanr.net/Projects/Beacon/  http://dast.nlanr.net/Projects/iperf http://dast.nlanr.net/Projects/iperf  Questions?

9. www.internet2.edu