Multicast Beacon v1.3-0   This page is showing: Central Loss (%)

The NLANR/DAST Beacon project has ended as of 12/31/2005. Community support is available at http://sourceforge.net/projects/multicastbeacon.
As of 9/14/2006 this beacon server is running on new hardware and is maintained by the NCSA Network Engineering group. Please contact neteng at ncsa dot edu with questions.

Time: Wed Jul 23 15:20:05 2008 CST | Page Refresh: 60 seconds | Started: Wed Jul 23 14:45:03 2008 | Beacons: 39 | Blind Beacons: 9
Target Multicast Group: 233.4.200.18 | Client-to-Client (RTP) multicast traffic on port: 10002, RTCP traffic on port: 10003
TCP unicast reports going back to the Central Server on port 10004

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

# Hostname IP Address RRs S0 S1 S2 S3 S4 S5 S6 S7 S8 S9   S10 S11 S12 S13 S14 S15 S16 S17 S18 S19   S20 S21 S22 S23 S24 S25 S26 S27 S28 S29   S30 S31 S32 S33 S34 S35 S36 S37 S38
R0 202.179.244.105 202.179.244.105 None 0 NA NA NA NA NA 0 0 0 0 R0 NA NA NA NA 0 0 0 0 0 0 R0 0 0 0 0 0 0 0 0 0 0 R0 NA 0 0 0 0 0 NA 0 0
R1 asok.ce.unisa.edu.au 130.220.65.218 None 0 0 NA NA NA NA 0 0 0 0 R1 NA NA NA NA 0 0 0 0 0 0 R1 0 0 0 0 0 0 0 0 0 0 R1 NA 0 NA 0 0 0 NA 0 0
R2 agvideo.usq.edu.au 139.86.2.230 None 0 NA 0 0 NA NA 0 0 0 0 R2 NA NA NA NA 0 0 0 0 0 0 R2 0 0 0 0 0 0 0 0 NA 0 R2 NA 0 0 0 0 0 NA 0 0
R3 usq-fos.usq.edu.au 139.86.2.226 None 0 NA 0 0 NA NA 0 0 0 0 R3 NA NA NA NA 0 0 0 0 0 0 R3 0 0 0 0 0 0 0 0 NA 0 R3 NA 0 0 0 0 0 NA 0 0
R4 flo.amtc.nrc.ca 206.167.204.18 None NA NA NA NA 0 0 0 NA NA NA R4 NA NA NA NA NA NA NA NA NA NA R4 NA NA NA NA NA NA NA NA NA NA R4 NA NA NA NA NA NA NA NA NA
R5 flo.hia.nrc.ca 204.174.103.140 None NA NA NA NA 0 0 0 0 0 0 R5 NA NA NA NA 0 0 0 0 0 NA R5 0 0 0 0 0 0 0 0 NA 0 R5 NA 0 0 0 0 0 NA 0 0
R6 octavius.imsb.nrc.ca 132.246.2.39 None NA NA NA NA 0 0 0 0 0 0 R6 NA NA NA NA 0 0 0 0 0 NA R6 0 NA 0 0 0 0 0 0 0 0 R6 NA NA NA 0 NA 0 NA 0 0
R7 ubuntu.radio-canada.ca 159.33.66.28 None NA NA NA NA NA NA NA 0 0 0 R7 NA NA NA NA 0 0 0 0 0 NA R7 0 0 0 0 0 0 0 0 0 0 R7 NA NA NA 0 0 0 NA 0 NA
R8 streams.rz.rwth-aachen.de 137.226.33.60 None 0 NA NA NA NA NA 0 NA 0 NA R8 NA NA NA NA 0 0 0 0 0 0 R8 0 0 NA 0 0 0 0 0 0 0 R8 NA 0 0 0 0 0 NA NA 0
R9 nseg-00.bu.edu 128.197.25.32 None NA NA NA NA NA NA 0 0 0 0 R9 NA NA NA NA 0 0 0 0 0 0 R9 0 0 0 0 0 0 0 0 0 0 R9 NA 0 NA 0 0 0 NA 0 NA
# Hostname IP Address RRs S0 S1 S2 S3 S4 S5 S6 S7 S8 S9   S10 S11 S12 S13 S14 S15 S16 S17 S18 S19   S20 S21 S22 S23 S24 S25 S26 S27 S28 S29   S30 S31 S32 S33 S34 S35 S36 S37 S38
R10 killerbees.cc.gatech.edu 130.207.104.247 None NA NA NA NA NA NA NA 0 0 0 R10 0 NA NA NA NA 0 0 0 0 NA R10 NA NA NA 0 0 0 0 0 NA 0 R10 NA 0 0 0 0 NA NA 0 0
R11 pulsar.noc.gatech.edu 130.207.166.66 None NA NA NA NA NA NA NA 0 0 0 R11 NA 0 NA NA NA 0 0 0 0 NA R11 NA NA NA 0 0 0 0 0 NA 0 R11 NA 0 0 0 0 NA NA 0 0
R12 netview.its.iastate.edu 129.186.6.240 None 0 NA NA NA NA NA 0 0 0 0 R12 NA NA 0 NA 0 0 0 0 0 0 R12 0 0 0 0 0 0 0 0 NA 0 R12 NA 0 0 0 0 0 NA 0 0
R13 ndt.ilstu.edu 138.87.132.2 None 0 NA NA NA NA NA 0 0 0 0 R13 NA NA NA 0 0 0 0 0 0 NA R13 0 0 0 0 0 0 0 0 NA 0 R13 NA 0 NA 0 0 0 NA 0 0
R14 perfmon-control.internet2.edu 207.75.165.71 None NA NA NA NA NA NA 0 NA 0 0 R14 NA NA NA NA 0 0 0 0 0 NA R14 NA 0 NA 0 0 0 0 0 NA 0 R14 NA NA NA 0 0 0 NA 0 NA
R15 nighthawk.rnet.missouri.edu 128.206.118.134 None 0 NA NA NA NA NA 0 0 0 0 R15 NA NA NA NA 0 0 0 0 0 0 R15 0 0 0 0 0 0 0 0 0 0 R15 NA 0 0 0 0 0 NA 0 0
R16 tent.net.ohio-state.edu 140.254.66.19 None NA NA NA NA NA NA 0 0 0 0 R16 NA NA NA NA 0 0 0 0 0 0 R16 0 0 0 0 0 0 0 0 0 0 R16 NA 0 0 0 0 0 NA 0 NA
R17 tesla.psc.edu 128.182.58.233 None 0 NA NA NA NA NA 0 0 0 0 R17 NA NA NA NA 0 0 0 0 0 0 R17 0 0 0 0 0 0 0 0 0 0 R17 NA 0 0 0 0 0 NA 0 0
R18 xenon.ops.tns.its.psu.edu 128.118.70.6 None 0 NA NA NA NA NA 0 0 0 0 R18 NA NA NA NA 0 0 0 0 0 0 R18 0 0 0 0 0 0 0 0 0 0 R18 NA 0 NA 0 0 0 NA 0 0
R19 vanguard.itt.purdue.edu 128.210.191.242 None 0 NA NA NA NA NA 0 0 0 0 R19 NA NA NA NA 0 0 0 0 0 0 R19 NA 0 0 0 0 0 0 0 0 0 R19 NA NA NA 0 0 0 NA 0 0
# Hostname IP Address RRs S0 S1 S2 S3 S4 S5 S6 S7 S8 S9   S10 S11 S12 S13 S14 S15 S16 S17 S18 S19   S20 S21 S22 S23 S24 S25 S26 S27 S28 S29   S30 S31 S32 S33 S34 S35 S36 S37 S38
R20 jhereg.ncsa.uiuc.edu 141.142.2.55 None NA NA NA NA NA NA NA 0 0 0 R20 NA NA NA NA 0 0 0 0 0 0 R20 0 0 0 0 0 0 0 0 0 0 R20 NA 0 NA 0 0 NA NA 0 0
R21 vidaud.ag.ulm.edu 198.232.231.72 None 0 NA NA NA NA NA 0 0 0 0 R21 NA NA NA NA 0 0 0 0 0 0 R21 0 0 0 0 0 0 0 0 0 0 R21 NA 0 NA 0 0 0 NA 0 NA
R22 ssb3.nts.umn.edu 134.84.88.4 None NA NA NA NA NA NA 0 0 0 0 R22 NA NA NA NA 0 0 0 0 0 0 R22 0 0 0 0 0 0 0 0 0 0 R22 NA 0 0 0 0 0 NA 0 NA
R23 multicast.chpc.utah.edu 155.101.3.100 None NA NA NA NA NA NA NA 0 0 0 R23 NA NA NA NA 0 0 NA NA 0 NA R23 0 NA 0 0 0 0 0 0 0 0 R23 NA NA NA 0 0 0 NA NA 0
R24 ebc.mc-beacon.utah.edu 155.98.194.254 None 0 NA NA NA NA NA NA 0 0 0 R24 NA NA NA NA 0 0 NA NA 0 NA R24 0 NA 0 0 0 0 0 0 0 0 R24 NA NA 0 0 0 0 NA NA 0
R25 eng.mc-beacon.utah.edu 155.98.127.254 None 0 NA NA NA NA NA NA 0 0 0 R25 NA NA NA NA 0 0 NA NA 0 NA R25 0 NA 0 0 0 0 0 0 0 0 R25 NA NA 0 0 0 0 NA NA 0
R26 ag-enc-new.wpi.edu 130.215.128.31 None 0 NA NA NA NA NA 0 0 0 0 R26 NA NA NA NA 0 0 0 0 0 0 R26 0 0 0 0 0 0 0 0 0 0 R26 NA 0 0 0 0 0 NA 0 0
R27 nfc1.grnet.gr 194.177.210.213 None 0 NA NA NA NA NA 0 0 0 0 R27 NA NA NA NA 0 0 0 0 0 0 R27 0 0 0 0 0 0 0 0 0 0 R27 NA 0 0 0 0 0 NA 0 0
R28 beacon.noc.dren.net 138.18.250.20 None 0 NA NA NA NA NA 0 0 0 0 R28 NA NA NA NA NA 0 0 0 0 NA R28 0 0 NA 0 0 0 0 0 0 0 R28 NA 0 0 0 0 0 NA 0 NA
R29 usul.es.net 198.128.1.31 None 0 NA NA NA NA NA 0 0 0 0 R29 NA NA NA NA 0 0 0 0 0 0 R29 0 0 0 0 0 0 0 0 NA 0 R29 NA 0 0 0 0 0 NA 0 NA
# Hostname IP Address RRs S0 S1 S2 S3 S4 S5 S6 S7 S8 S9   S10 S11 S12 S13 S14 S15 S16 S17 S18 S19   S20 S21 S22 S23 S24 S25 S26 S27 S28 S29   S30 S31 S32 S33 S34 S35 S36 S37 S38
R30 chlt-beacon.ncren.net 128.109.249.21 None NA NA NA NA NA NA 0 0 0 0 R30 NA NA NA NA 0 0 0 0 0 0 R30 0 0 0 0 0 0 0 0 0 0 R30 0 0 0 0 0 0 NA 0 0
R31 fay-beacon.ncren.net 128.109.2.40 None NA NA NA NA NA NA 0 0 0 0 R31 NA NA NA NA 0 0 0 0 0 0 R31 0 0 0 0 0 0 0 0 0 0 R31 NA 0 NA 0 0 0 NA 0 0
R32 gb-beacon.ncren.net 128.109.16.117 None NA NA NA NA NA NA 0 0 0 0 R32 NA NA NA NA 0 0 0 0 0 0 R32 0 0 0 0 0 0 0 0 0 0 R32 NA 0 0 0 0 0 NA 0 NA
R33 rtp-beacon.ncren.net 128.109.230.21 None 0 NA NA NA NA NA 0 0 0 0 R33 NA NA NA NA 0 0 0 0 0 0 R33 0 0 0 0 0 0 0 0 0 0 R33 NA 0 0 0 0 0 NA 0 0
R34 wil-beacon.ncren.net 128.109.3.228 None 0 NA NA NA NA NA 0 0 0 0 R34 NA NA NA NA 0 0 0 0 0 0 R34 0 0 0 0 0 0 0 0 0 0 R34 NA 0 0 0 0 0 NA 0 0
R35 stats.ottix.net 132.246.127.9 None NA NA NA NA 0 0 0 0 0 0 R35 NA NA NA NA 0 0 0 0 0 NA R35 0 NA 0 0 0 0 0 0 0 0 R35 NA NA NA NA NA 0 NA 0 NA
R36 agvenue.mcs.vuw.ac.nz 130.195.5.22 None 0 NA NA NA NA NA 0 0 0 0 R36 NA NA NA NA 0 0 0 0 0 0 R36 0 0 0 0 0 0 0 0 NA 0 R36 NA 0 0 0 0 0 0 0 0
R37 vv2.ap-accessgrid.org 130.102.78.179 None 0 NA NA NA NA NA 0 0 0 0 R37 NA NA NA NA 0 0 0 0 0 0 R37 0 0 0 0 0 0 0 0 NA 0 R37 NA 0 0 0 0 0 NA 0 NA
R38 mad.ip6.fccn.pt 193.136.2.30 None NA NA NA NA NA NA 0 NA 0 NA R38 NA NA NA NA 0 0 0 0 0 0 R38 NA 0 0 0 0 0 0 0 0 0 R38 NA 0 0 0 0 NA NA NA 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


Blind Beacons -- These Beacons are being correctly reported to the Central Server, but do not see any other Beacons, nor are they seen by any other Beacons. Check your multicast setup if you are the admin for any of the Beacons listed below!

Central Loss is the reported loss between two Beacons in the current multicast group, sent via TCP unicast back to the Central Server (in this case, "jhereg.ncsa.uiuc.edu") for the group. This allows for the reporting of Beacons that might not otherwise be able to see each other via UDP multicast.

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.