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

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: Mon Sep 8 12:31:06 2008 CST | Page Refresh: 60 seconds | Started: Mon Sep 8 11:30:03 2008 | Beacons: 42
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 S39   S40 S41
R0 beacon.sapac.edu.au 129.127.96.120 141 0 NA NA 0 0 0 NA NA NA 0 R0 0 0 NA NA 0 0 0 0 0 NA R0 0 0 NA NA NA 0 0 0 0 NA R0 0 0 NA 0 0 NA 0 NA 0 0 R0 NA NA
R1 asok.ce.unisa.edu.au 130.220.65.218 358 0 0 0 0 0 0 0 0 0 0 R1 0 0 0 0 0 0 0 0 0 0 R1 0 0 0 0 0 0 0 0 0 0 R1 0 0 0 0 0 0 0 0 0 0 R1 0 0
R2 dawn.ml.unisa.edu.au 130.220.64.249 405 0 0 0 0 0 0 0 0 0 0 R2 0 0 0 0 0 0 0 0 0 0 R2 0 0 0 0 0 0 0 0 0 0 R2 0 0 0 0 0 0 0 0 0 0 R2 0 0
R3 ubuntu.radio-canada.ca Unresolvable 9 NA NA NA 0 0 0 NA NA NA 0 R3 0 NA NA NA 0 0 NA 0 0 NA R3 0 0 0 NA NA 0 0 NA NA NA R3 0 0 NA NA 0 0 0 NA 0 0 R3 NA NA
R4 collab3.westgrid.ca 142.231.1.123 3 NA NA 0 0 0 0 NA NA NA 0 R4 0 NA NA 0 0 0 NA 0 0 NA R4 0 0 0 NA NA 0 0 NA NA NA R4 0 0 NA NA 0 0 0 NA 0 0 R4 NA NA
R5 streams.rz.rwth-aachen.de 137.226.33.60 43 0 NA 0 NA 0 NA NA NA NA NA R5 0 0 NA 0 0 NA NA 0 0 NA R5 0 0 0 0 NA 0 0 0 NA 0 R5 0 NA NA 0 0 0 NA NA NA NA R5 NA NA
R6 perfmon-control.internet2.edu 207.75.165.71 25 NA NA NA NA 0 NA 0 0 NA 0 R6 0 0 0 0 0 0 0 0 NA 0 R6 NA NA 0 5 0 0 0 0 NA NA R6 0 0 NA 0 0 0 NA 0 0 NA R6 NA NA
R7 check3.net.kent.edu 131.123.252.237 6 NA NA 0 0 0 NA 0 NA NA 0 R7 0 NA NA 0 0 0 NA 0 NA NA R7 NA 0 0 NA NA 0 0 NA NA NA R7 0 0 0 NA 0 0 0 NA 0 0 R7 NA NA
R8 nighthawk.rnet.missouri.edu 128.206.118.134 None NA NA 0 NA 0 0 NA NA NA NA R8 0 NA NA 0 0 NA NA 0 0 NA R8 0 0 0 NA NA 0 0 NA NA NA R8 0 NA NA NA 0 0 0 NA NA NA R8 NA NA
R9 netmenderx.cc.ndsu.nodak.edu 134.129.95.122 None NA NA NA 0 NA 0 NA NA NA 0 R9 NA NA NA NA 0 0 NA 0 0 NA R9 0 0 NA NA NA 0 0 NA NA NA R9 0 0 NA NA 0 0 0 NA 0 0 R9 NA 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 S39   S40 S41
R10 xenon.ops.tns.its.psu.edu 128.118.70.6 None NA NA 0 NA 0 0 NA NA NA 0 R10 0 NA NA 0 0 NA NA 0 0 NA R10 0 0 0 NA NA 0 0 NA NA NA R10 0 NA NA NA 0 0 0 NA NA 0 R10 NA NA
R11 otc1.psu.edu 128.118.25.5 5 NA NA 0 NA 0 0 NA NA NA 0 R11 0 NA NA 0 0 NA NA 0 0 NA R11 0 0 0 NA NA 0 0 NA NA NA R11 0 NA NA NA 0 0 0 NA NA 0 R11 NA NA
R12 g217display.bsd.uchicago.edu 128.135.122.108 None NA NA 0 0 0 0 NA NA NA 0 R12 0 NA NA 0 0 0 NA 0 0 NA R12 0 0 0 NA NA 0 0 NA NA NA R12 0 0 NA NA 0 0 0 NA 0 0 R12 NA NA
R13 fig.uchicago.edu 128.135.106.42 None NA NA NA 0 0 0 0 NA NA 0 R13 0 NA NA NA 0 0 NA 0 0 NA R13 0 0 0 NA NA 0 0 NA NA NA R13 0 0 0 NA 0 0 0 NA 0 0 R13 NA NA
R14 serrano.noc.ucla.edu 169.232.25.8 13 NA NA 0 0 0 0 NA NA NA 0 R14 0 NA NA 0 NA 0 NA 0 0 NA R14 0 0 0 NA NA 0 0 NA NA NA R14 0 0 NA NA 0 0 0 NA 0 0 R14 NA NA
R15 ag-beacon.engr.ucsb.edu 128.111.149.134 12 NA NA NA NA NA NA NA NA NA NA R15 NA NA NA NA NA 0 NA NA NA NA R15 NA NA NA NA NA NA NA NA NA NA R15 NA NA NA NA NA NA NA NA NA NA R15 NA NA
R16 darkness.nss.udel.edu 128.175.2.48 6 NA NA 0 0 0 0 NA NA NA 0 R16 0 0 NA 0 0 0 NA 0 0 NA R16 0 0 0 0 NA 0 0 0 NA 0 R16 0 0 NA 0 0 0 0 NA 0 NA R16 NA NA
R17 transducer.nss.udel.edu 128.175.13.112 275 0 0 0 0 0 0 0 0 0 0 R17 0 0 0 0 0 0 0 0 0 0 R17 0 0 0 0 0 0 0 0 0 0 R17 0 0 0 0 0 0 0 0 0 0 R17 0 0
R18 verdi.udel.edu 128.175.13.135 319 0 0 0 0 0 0 0 0 0 0 R18 0 0 0 0 0 0 0 0 0 0 R18 0 0 0 0 0 0 0 0 0 0 R18 0 0 0 0 0 0 0 0 0 0 R18 0 0
R19 faranth.ci.uiuc.edu 192.17.24.169 42 NA NA NA NA NA 0 NA NA NA 0 R19 NA NA NA NA 0 NA NA 0 0 NA R19 0 0 NA NA NA 0 0 NA NA NA R19 0 NA 0 NA 0 0 0 NA 0 0 R19 NA 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 S39   S40 S41
R20 jhereg.ncsa.uiuc.edu 141.142.2.55 50 0 0 0 0 0 NA NA 0 0 0 R20 0 0 0 0 NA 0 NA 0 NA 0 R20 NA 0 0 0 0 NA NA 0 NA 0 R20 0 0 NA 0 NA 0 0 0 0 0 R20 NA NA
R21 multicast.chpc.utah.edu 155.101.3.100 7 NA 0 0 0 0 NA 0 NA NA 0 R21 0 NA NA 0 NA 0 NA 0 NA 0 R21 NA NA 0 NA NA 0 0 NA NA NA R21 0 0 91 NA 0 0 0 NA 0 0 R21 NA NA
R22 ebc.mc-beacon.utah.edu 155.98.194.254 None NA NA NA 0 0 0 NA NA NA 0 R22 0 NA NA NA 0 0 NA 0 0 NA R22 0 0 NA NA NA 0 0 NA NA NA R22 0 0 NA NA 0 0 0 NA 0 0 R22 NA NA
R23 eng.mc-beacon.utah.edu 155.98.127.254 5 NA NA NA 0 0 0 0 NA NA 0 R23 0 NA NA NA 0 0 NA 0 0 NA R23 0 0 NA NA NA NA NA NA NA NA R23 0 0 0 NA NA 0 0 NA 0 0 R23 NA NA
R24 park.mc-beacon.utah.edu 155.101.127.30 8 NA NA NA 0 0 0 NA NA NA 0 R24 0 NA NA NA 0 0 NA 0 0 NA R24 0 0 NA NA NA 0 0 NA NA NA R24 0 0 NA NA 0 0 0 NA 0 0 R24 NA NA
R25 mbone-test.cs.wisc.edu 128.105.40.15 None NA NA 0 0 0 0 NA NA NA 0 R25 0 NA NA 0 0 0 NA 0 0 NA R25 0 0 0 NA NA 0 0 NA NA NA R25 0 0 NA NA 0 0 0 NA 0 0 R25 NA NA
R26 lipas.tv.funet.fi 193.166.16.119 None 0 NA 0 0 0 0 NA NA NA 0 R26 0 0 NA 0 0 0 0 0 0 NA R26 0 0 0 0 NA 0 0 0 0 0 R26 0 0 NA 0 0 0 0 NA 0 0 R26 NA NA
R27 hank.ornl.gov 192.31.96.42 12 NA NA NA NA NA NA NA NA NA NA R27 NA NA NA NA NA NA NA NA NA NA R27 NA NA NA NA NA NA NA 0 NA NA R27 NA NA NA NA NA NA NA NA NA NA R27 NA NA
R28 nfc1.grnet.gr 194.177.210.213 493 0 0 0 0 0 0 0 0 0 0 R28 0 0 0 0 0 0 0 0 0 0 R28 0 0 0 0 0 0 0 0 0 0 R28 0 0 0 0 0 0 0 0 0 0 R28 0 0
R29 beacon.noc.dren.net 138.18.250.20 357 0 0 0 0 0 0 0 0 NA 0 R29 0 0 0 0 0 0 0 0 0 NA R29 0 0 0 0 0 0 0 0 0 0 R29 0 0 0 0 0 0 0 0 0 0 R29 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 S39   S40 S41
R30 usul.es.net 198.128.1.31 21 NA NA NA 0 0 0 0 NA NA 0 R30 0 NA NA NA 0 0 NA 0 0 NA R30 0 0 0 NA NA 0 0 NA NA NA R30 0 0 0 NA 0 0 0 NA 0 0 R30 NA NA
R31 noc.maxgigapop.net 206.196.176.2 7 NA NA 0 0 0 0 NA NA NA 0 R31 0 NA NA 0 0 0 NA 0 0 NA R31 0 0 0 NA NA 0 0 NA NA NA R31 0 0 NA NA 0 0 0 NA 0 0 R31 NA NA
R32 ecu-beacon.ncren.net 128.109.58.21 50 NA NA 0 0 0 0 NA NA NA 0 R32 0 NA NA 0 0 0 0 0 0 NA R32 0 0 0 NA NA 0 0 NA 0 NA R32 0 0 NA NA 0 0 0 NA 0 0 R32 NA NA
R33 rtp-beacon.ncren.net 128.109.230.21 24 NA NA NA 0 0 0 NA NA NA 0 R33 0 NA NA NA 0 0 NA 0 0 NA R33 0 0 NA NA NA 0 0 NA NA NA R33 0 0 NA NA 0 0 0 NA 0 0 R33 NA NA
R34 freebird.wind.surfnet.nl 192.87.110.80 None 0 NA 0 0 0 0 0 NA NA 0 R34 0 0 NA 0 0 0 NA 0 0 NA R34 0 0 0 0 NA 0 0 0 NA 0 R34 0 0 0 0 0 0 0 NA NA 0 R34 NA NA
R35 beacon.zebi.nl 192.87.78.202 1 0 NA 0 NA 0 0 NA NA NA NA R35 0 NA NA 0 0 NA NA 0 0 NA R35 0 0 0 0 NA 0 0 NA NA 0 R35 0 NA NA NA 0 0 NA NA NA NA R35 NA NA
R36 ag.bccs.uib.no 129.177.120.154 None 0 NA 0 0 0 0 NA NA NA 0 R36 0 NA NA 0 0 0 NA 0 0 NA R36 0 0 0 0 NA NA NA NA NA 0 R36 0 0 NA NA NA 0 0 NA 0 0 R36 NA NA
R37 beacon.karen.ac.nz 210.7.46.250 124 NA NA 0 0 0 0 NA NA NA 0 R37 0 NA NA 0 0 0 0 0 0 NA R37 0 0 0 NA NA 0 0 NA 0 NA R37 0 0 NA NA 0 NA 0 NA 0 0 R37 NA NA
R38 kutil.karen.ac.nz 210.7.46.41 136 NA NA 0 0 0 0 NA NA NA 0 R38 0 NA NA 0 0 0 NA 0 0 NA R38 0 0 0 NA NA 0 0 NA NA NA R38 0 0 NA NA 0 NA 0 NA 0 0 R38 NA NA
R39 vv2.ap-accessgrid.org 130.102.78.179 114 0 NA 0 0 0 0 NA NA NA 0 R39 0 0 NA 0 0 0 NA 0 0 NA R39 0 0 0 NA NA 0 0 0 NA 0 R39 0 0 NA 0 0 0 0 NA 0 0 R39 NA 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 S39   S40 S41
R40 Unresolvable 6 NA NA NA NA NA NA NA NA NA NA R40 NA NA NA NA NA NA NA NA NA NA R40 NA NA NA NA NA NA NA NA NA NA R40 NA NA NA NA NA NA NA NA NA NA R40 NA NA
R41 Unresolvable 5 NA NA NA NA NA NA NA NA NA NA R41 NA NA NA NA NA NA NA NA NA NA R41 NA NA NA NA NA NA NA NA NA NA R41 NA NA NA NA NA NA NA NA NA NA R41 NA NA

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.