Problem: Slow upload and 2-8% packet loss to the first hop. Download is fine. Cox official speed test show 58Mb download, but upload gets to 0.15Mb then times out. Premier tier. Confirmed with multiple different sites and servers. Bypassed router and rebooted modem for tests below. Modem took about 3-5min to boot back up. 30-40 T3 in the last hour or so, and the T3 errors in log match when I see the packet loss. Tried phone support but I hung around the time she got to page 2 of her troubleshooting script. TT
http://imgur.com/akIp3LM
Equipment: SB6141, direct ethernet to PC.
Signal:
Downstream Bonding Channel Value
Channel ID 85 86 87 88 93 94 95 96
Frequency 813000000 Hz 819000000 Hz 825000000 Hz 831000000 Hz 867000000 Hz 873000000 Hz 879000000 Hz 885000000 Hz
Signal to Noise Ratio 37 dB 38 dB 37 dB 37 dB 38 dB 38 dB 38 dB 37 dB
Downstream Modulation QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256
Power Level
8 dBmV 8 dBmV 8 dBmV 8 dBmV 7 dBmV 7 dBmV 6 dBmV 6 dBmV
Upstream Bonding Channel Value
Channel ID 1 2 3 4
Frequency 24400000 Hz 29200000 Hz 35600000 Hz 40400000 Hz
Ranging Service ID 1075 1075 1075 1075
Symbol Rate 2.560 Msym/sec 5.120 Msym/sec 5.120 Msym/sec 2.560 Msym/sec
Power Level 41 dBmV 42 dBmV 42 dBmV 41 dBmV
Upstream Modulation [6] 16QAM
[6] 16QAM
[6] 16QAM
[6] 16QAM
Tracing route to cox.net [68.99.123.161]
over a maximum of 30 hops:
1 7 ms 7 ms 7 ms 10.2.48.1
2 * 16 ms 15 ms ip98-190-161-114.ri.ri.cox.net [98.190.161.114]
3 9 ms 9 ms 9 ms ip98-190-33-125.ri.ri.cox.net [98.190.33.125]
4 35 ms 35 ms 36 ms dukedsrj02-ae4.0.rd.at.cox.net [68.1.1.123]
5 36 ms 35 ms 39 ms 68.1.15.238
6 * 35 ms 35 ms 68.99.123.4
7 36 ms 35 ms 35 ms ww2.cox.com [68.99.123.161]
Ping to first hop
Ping statistics for 10.2.48.1:
Packets: Sent = 100, Received = 97, Lost = 3 (3% loss),
Approximate round trip times in milli-seconds:
Minimum = 6ms, Maximum = 40ms, Average = 10ms
↧