All things related to multicast

["Buraglio, Nicholas D" <>]

Would it be beneficial to recycle the original v4 multicast group NCSA 
provided for the NLANR beacon?  We had taken the original beacon offline a 
while back with the understanding that another entity was going to take it 
over, but I don't think it ever happened.  
Our loose plan was to volunteer to do a dbeacon implementation and announce 
it as a central service on the same addresses but that fizzled out, too.   Is 
there interest in running a dbeacon service on the old addresses?  Even 
though dbeacon also isn't really supported anymore (last I looked), it was a 
bit of a feature improvement over the nlanr beacon, in my opinion, it just 
lacked the centralization that the nlanr beacon provided.  Thoughts? 

nb


---
Nick Buraglio   
Senior Network Engineer
University of Illinois NCSA / CITES / ICCN
GPG key 0x2E5B44F4
P: 217.689.4254





On Feb 10, 2012, at 1:49 PM, Debbie Fligor wrote:

> 
> On Feb 10, 2012, at 13:25, Bill Owens wrote:
> 
>> On Fri, Feb 10, 2012 at 02:12:27PM -0500, Matthew J Zekauskas wrote:
>>> Phil Dykstra asked me about multicast beacons, and I thought I'd forward 
>>> the question here.
>>> 
>>> In particular, are networks still running them (I don't think there is 
>>> one on the Internet2 Network currently), and if so what do they use, 
>>> since existing code bases are not supported (AFAIK).
>> 
>> I expect you're talking about IPv4, but for v6 there are still a few of us 
>> die-hards running dbeacon. Debian and Ubuntu have it as a package, which 
>> they list as version 0.3.9.3. There's a GitHub repository as well 
>> (https://github.com/hugosantos/dbeacon) which seems to be 0.3.9.2 and 
>> hasn't been touched in at least two years. 
>> 
>> You can use dbeacon for v4, for example:
>> http://ag0-video.vislab.uq.edu.au:8888/matrix/
>> 
>> I'm not aware of anyone using it in the US though. . .
> 
> 
> For IPv4 I run an ASM dbeacon matrix for our campus, and started one on 
> 233.0.38.38 that people are welcome to use for Internet-wide connectivity. 
> I thought I'd posted about it a few months back, and there was some 
> discussion of picking a better group address, but I didn't see a strong 
> consensus to change it nor did anyone else offer to register one.
> 
> As with all dbeacon instances, there's no way to tell what should be there, 
> so it's always hard to tell when it's working.  we just got some bug-fix 
> code that should up the stability of our multicast in the backbone yet 
> again (hopefully this time it stays stable). we've only gotten it deployed 
> on one router yet though.  we're the only one in the list, but I can't tell 
> if that's because no one else is playing, or because multicast is broken 
> again. 
> 
> http://bbmon2-1.gw.uiuc.edu/matrix-global/
> 
> Current stats for 233.0.38.38/10000
> 
> 
>> 
>> Bill.
> 
> -----
> -debbie
> Debbie Fligor, n9dn       Network Engineer, CITES, Univ. of Il
> email: 
> 
>           <http://www.uiuc.edu/ph/www/fligor>
> "Every keystroke can be monitored. And the computers never forget."
> 
> 
> 
>