Multicast Beacon v1.3-0   This page is showing: Local Jitter (%)

Time: Thu Sep 9 9:29:41 2010 CST | Page Refresh: 60 seconds | Started: Thu Jun 24 8:30:53 2010 | Beacons: 2
Target Multicast Group: 233.10.43.2 | Client-to-Client (RTP) multicast traffic on port: 26030, RTCP traffic on port: 26031
TCP unicast reports going back to the Central Server on port 26032

Central Loss | Local Loss | Fract Loss | Central RTT | Local RTT | Central Jitter | Local Jitter | Beacon Info | History | Previous History

# Hostname IP Address SSRC RRs S0 S1
R0 noctv.funet.fi 193.166.4.34 0x33721b25 24 0 0
R1 old-server.nordu.net 193.10.252.24 0x125b0251 48 0 0

Central Loss | Local Loss | Fract Loss | Central RTT | Local RTT | Central Jitter | Local Jitter | Beacon Info | History | Previous History

Diagnosing problems with your multicast setup | Contributed code and patches

Jitter is statistical variation in delay, measured in milliseconds, and represents short-term network congestion.

The "RRs" column is the count of RTP Receiver Reports received from each SR during the previous interval. For any given interval, the count of reports should be approximately the same. If your Beacon's report count is much lower than the others, it means your Beacon has only recently joined the multicast If you know you Beacon has been running for some time, it may be showing router-level multicast problems, which is why the option was included in this release of the Beacon. If your Beacon is joining and leaving and joining and leaving, this it what that would look like.

Please share your comments, questions, bug reports, concerns, and feedback with us via the Beacon listserv. Please note this list can only be posted to by SUBSCRIBERS, in order to keep it spam-free. Non-subscriber email is automatically discarded. You can subscribe to the list by sending an email to "majordomo /at/ dast.nlanr.net", with "subscribe beacon /at/ dast.nlanr.net" (with real "at" signs, of course) in the body. This list is publicly archived at http://archive.ncsa.uiuc.edu/lists/beacon.

Another way to contact us is to use the DAST contact webform.