I'm an iperf newbie. I'm trying to measure UDP bandwidth between for
data going through hosts A->B->C. The client is running on A and
generates data for B. B is set up (using iptables) to nat the data to C.
The server is running on C. The server reports data from what looks like
two (or more) streams with different 'ID's, e.g. IDs [ 3] and [ 6]
below. The stream for ID 3 reports 8 Mbps (which is what I expect) while
ID 6 reports 0 bandwidth. What does the ID signify? I have a single
client running. Thanks for your help.
-Neeraj
[ 3] 914.0-916.0 sec 1.91 MBytes 7.99 Mbits/sec 0.381 ms 0/ 1388
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 916.0-918.0 sec 1.91 MBytes 8.00 Mbits/sec 0.609 ms 0/ 1389
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 918.0-920.0 sec 1.91 MBytes 8.01 Mbits/sec 0.467 ms 0/ 1390
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 920.0-922.0 sec 1.90 MBytes 7.99 Mbits/sec 0.404 ms 0/ 1387
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 922.0-924.0 sec 1.91 MBytes 8.01 Mbits/sec 0.791 ms 0/ 1390
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 924.0-926.0 sec 1.91 MBytes 8.02 Mbits/sec 0.421 ms 0/ 1393
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 926.0-928.0 sec 1.90 MBytes 7.99 Mbits/sec 0.542 ms 0/ 1387
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 928.0-930.0 sec 1.91 MBytes 8.01 Mbits/sec 0.349 ms 0/ 1390
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 930.0-932.0 sec 1.91 MBytes 8.00 Mbits/sec 0.491 ms 0/ 1389
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 932.0-934.0 sec 1.90 MBytes 7.98 Mbits/sec 0.566 ms 0/ 1385
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 3] 934.0-936.0 sec 1.91 MBytes 8.01 Mbits/sec 0.441 ms 0/ 1391
(0%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 880.0-882.0 sec 32.3 KBytes 132 Kbits/sec 14.245 ms 4638/
4661 (1e+02%)
[ 6] 880.0-882.0 sec 22 datagrams received out-of-order
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 882.0-884.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 884.0-886.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 886.0-888.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 888.0-890.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 890.0-892.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 892.0-894.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 894.0-896.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 896.0-898.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 898.0-900.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 900.0-902.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 902.0-904.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 904.0-906.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
[ ID] Interval Transfer Bandwidth Jitter Lost/Total
Datagrams
[ 6] 906.0-908.0 sec 0.00 Bytes 0.00 bits/sec 14.245 ms 0/ 0
(nan%)
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