Consider reducing default of.discoveryInterval=300 in config.ini

Hi devs,

System test for SP edition and new OF plugin edition were not stable (some topology missing sometimes) until we changed of.discoveryInterval=300 -> 10 secs. Meaning that even if 300 secs interval is good for convergence, it looks far too much for system test as well as for user experience (people may not see full topology for 5 minutes). So can you please come up with a good value or algorithm to set it?

See also Madhu comments below:

This is most likely caused by the missed LLDP discovery packet. We have
a configurable timer in configuration/config.ini

1. The interval which determines how often the discovery packets should
   be sent (default 300 sec)
2. of.discoveryInterval=300

This is a 5 mins interval !!! (oh ya, that is too conservative
considering the scalability).
Maybe we should have a smarter exponential backoff algorithm here.

For now, reduce this number to say 10 seconds and give it a try and let
us know the result.

Thanks/Luis