Rare project developers

[Tim Chown <>]

> On 25 Aug 2022, at 10:41, mc36 <> wrote:
> 
> On 8/25/22 11:34, mc36 wrote:
>> then 2 constant rsvp tunnels and that's it...
> 
> first you must nat the unicast to multicast... rare and cat6500 both can do 
> that in hardware... :)
> then you static joingroup the resulting stream to the 2 tunnel-te s
> and that's all... you have 2 constant streams, one copy should reach the 
> tunnel destination...
> if not, you can have more constant streams... no need to do a thing in the 
> core if there are some bandwidth...
> 
> so which netmusic.... the distributed musicinas (lola?:) project you 
> mentioned yesterday…

Aaaah! :)

So that type of distributed music performance uses platforms like LoLa, which 
is a project led by GARR in Italy - https://lola.conts.it/, and the work in 
WP6T1 on LoLa is really about measuring latency and jitter to help 
troubleshoot networks when the distributed musicians get poor quality of 
experience.  That’s what’s led to the TimeMap platform that gives a view of 
the latency and jitter per hop on the GEANT backbone.

LoLa, the software, I think is Windows only, and you run it on very well 
tuned hardware (as encoding and decoding adds latency, maybe more than the 
network).  It doesn’t use RTP, just raw UDP, as far as I know.

There’s a map of known LoLa users here, seems to be one in Budapest too!  
https://www.google.com/maps/d/u/0/viewer?mid=1RUFFnVkuPnXnBPWThnUlMp96_Co&hl=it&ll=-3.81666561775622e-14%2C-82.15722249999999&z=1

The interesting thing is then whether TimeMap can be easily applied to the 
GEABT P4 Lab network.  It seems it can.  There are of course other tools you 
could use, but validating TimeMap on our P4 Lab would be useful, if it’s not 
a lot of effort.  It all seems compatible with Telegraf export to influxdb. 

Tim