Bad Internet connection right now? Bad cable modem?

Bad Internet connection right now? Bad cable modem?
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Forums » US Cable Support » Road Runner » Bad Internet connection right now? Bad cable modem?

antdude @ 2nd Nov 01:58AM:
Bad Internet connection right now? Bad cable modem?

Is it me or Internet really bad right now? Slow, not connecting, fast sometimes, etc.? :(
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antdude @ 2nd Nov 02:56AM:
A cable modem problem?

Hmm, things got better now but for weird reason my cable modem(?) went crazy. I got packet losses from it (192.168.100.1) and couldn't access its internal Web pages fully (never finished or doesn't load even in text mode browsers or without graphics) to get logs and statistics, even if I unplugged and replugged its power (same for my Linksys router).

Examples of pings from Linux/Debian box:
--- 192.168.100.1 ping statistics ---
45 packets transmitted, 38 received, 15% packet loss, time 44052ms
rtt min/avg/max/mdev = 2.063/2.109/2.296/0.067 ms

I did manage to get through to see logs very slowly (note had to power cycled the modem earlier hence the "time not established" and couldn't get the older logs before that cycle):

Sun Nov  1 23:28:54 PST 2009 PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.64 bytes from 192.168.100.1: icmp_seq=1 ttl=63 time=2.21 ms --- 192.168.100.1 ping statistics ---1 packets transmitted, 1 received, 0% packet loss, time 0msrtt min/avg/max/mdev = 2.213/2.213/2.213/0.000 ms   [1][IMG]                                                          [2]MODEM | [3]TOOLS  CABLE MODEM   [4]Information   [5]Status              Cable Modem Information                         Cable Modem : DOCSIS 1.0/1.1/2.0 Compliant  [6]Downstream          MAC Address : [deleted]                         Serial Number : [deleted]  [7]Upstream            Boot Code Version : 2.1.6d                         Software Version : 2.105.1008  [8]Upstream Burst      Hardware Version : 1.20                         CA Key : Installed  [9]Operation Config.   [10]Event Log                                        . References    Visible links   1. http://www.ambitbroadband.com/   2. http://user:user@192.168.100.1/CmNavigation.asp   3. http://user:user@192.168.100.1/TlNavigation.asp   4. http://user:user@192.168.100.1/CmInfo.asp   5. http://user:user@192.168.100.1/CmStatus.asp   6. http://user:user@192.168.100.1/CmDnstream.asp   7. http://user:user@192.168.100.1/CmUpstream.asp   8. http://user:user@192.168.100.1/CmUpBurst.asp   9. http://user:user@192.168.100.1/CmOpConfig.asp  10. http://user:user@192.168.100.1/CmEventLog.asp  [1][IMG]                                                          [2]MODEM | [3]TOOLS  CABLE MODEM   [4]Information   [5]Status             Cable Modem Status                        Item                          Status        Comments  [6]Downstream         Acquire a Downstream Channel  705000000 Hz  Locked                        Connectivity State            OK            Operational  [7]Upstream           Boot State                    OK            Operational                        Security                      Enabled       BPI+  [8]Upstream Burst                        [11][  Refresh  ]   [9]Operation Config.   [10]Event Log                                        . References    Visible links   1. http://www.ambitbroadband.com/   2. http://user:user@192.168.100.1/CmNavigation.asp   3. http://user:user@192.168.100.1/TlNavigation.asp   4. http://user:user@192.168.100.1/CmInfo.asp   5. http://user:user@192.168.100.1/CmStatus.asp   6. http://user:user@192.168.100.1/CmDnstream.asp   7. http://user:user@192.168.100.1/CmUpstream.asp   8. http://user:user@192.168.100.1/CmUpBurst.asp   9. http://user:user@192.168.100.1/CmOpConfig.asp  10. http://user:user@192.168.100.1/CmEventLog.asp  [1][IMG]                                                          [2]MODEM | [3]TOOLS  CABLE MODEM   [4]Information                        Cable Modem Downstream  [5]Status             Downstream Lock :                   Locked                        Downstream Channel Id :             71  [6]Downstream         Downstream Frequency :              705000000 Hz                        Downstream Modulation :             QAM256  [7]Upstream           Downstream Symbol Rate :            5360.537 Ksym/sec                        Downstream Interleave Depth :       taps32Increment4  [8]Upstream Burst     Downstream Receive Power Level :    1.6 dBmV                        Downstream SNR :                    38.3 dB  [9]Operation Config.                     [11][  Refresh  ]   [10]Event Log                                        . References    Visible links   1. http://www.ambitbroadband.com/   2. http://user:user@192.168.100.1/CmNavigation.asp   3. http://user:user@192.168.100.1/TlNavigation.asp   4. http://user:user@192.168.100.1/CmInfo.asp   5. http://user:user@192.168.100.1/CmStatus.asp   6. http://user:user@192.168.100.1/CmDnstream.asp   7. http://user:user@192.168.100.1/CmUpstream.asp   8. http://user:user@192.168.100.1/CmUpBurst.asp   9. http://user:user@192.168.100.1/CmOpConfig.asp  10. http://user:user@192.168.100.1/CmEventLog.asp  [1][IMG]                                                          [2]MODEM | [3]TOOLS  CABLE MODEM   [4]Information                        Cable Modem Upstream  [5]Status             Upstream Lock :                   Locked                        Upstream Channel ID :             7  [6]Downstream         Upstream Frequency :              33000000 Hz                        Upstream Modulation :             QAM16  [7]Upstream           Upstream Symbol Rate :            2560 Ksym/sec                        Upstream transmit Power Level :   39.3 dBmV  [8]Upstream Burst     Upstream Mini-Slot Size :         4                                           [11][  Refresh  ]  [9]Operation Config.   [10]Event Log                                        . References    Visible links   1. http://www.ambitbroadband.com/   2. http://user:user@192.168.100.1/CmNavigation.asp   3. http://user:user@192.168.100.1/TlNavigation.asp   4. http://user:user@192.168.100.1/CmInfo.asp   5. http://user:user@192.168.100.1/CmStatus.asp   6. http://user:user@192.168.100.1/CmDnstream.asp   7. http://user:user@192.168.100.1/CmUpstream.asp   8. http://user:user@192.168.100.1/CmUpBurst.asp   9. http://user:user@192.168.100.1/CmOpConfig.asp  10. http://user:user@192.168.100.1/CmEventLog.asp  [1][IMG]                                                          [2]MODEM | [3]TOOLS  CABLE MODEM            Cable Modem Upstream Burst                                                Req   Init    Per  Short   Long  [4]Information                                     Maint  Maint   Data   Data                                                (1)    (3)    (4)    (5)    (6)  [5]Status             Modulation Type        QPSK   QPSK   QPSK  16QAM  16QAM                        Differential Encoding   Off    Off    Off    Off    Off  [6]Downstream         Preamble Length          64    640    384    168    192                        Preamble Value Offset   652      0      0    720    720  [7]Upstream           FEC Error Correction      0      5      5      6      8                        (T)  [8]Upstream Burst     FEC Codeword             16     34     34     78    220                        Information Bytes (k)  [9]Operation Config.  Scrambler Seed          338    338    338    338    338                        Maximum Burst Size        0      0      0     23    255  [10]Event Log         Guard Time Size           8     48     48      8      8                        Last Codeword Length  Fixed  Fixed  Fixed  Short  Short                        Scrambler on/off         On     On     On     On     On                                           [11][  Refresh  ]                                        . References    Visible links   1. http://www.ambitbroadband.com/   2. http://user:user@192.168.100.1/CmNavigation.asp   3. http://user:user@192.168.100.1/TlNavigation.asp   4. http://user:user@192.168.100.1/CmInfo.asp   5. http://user:user@192.168.100.1/CmStatus.asp   6. http://user:user@192.168.100.1/CmDnstream.asp   7. http://user:user@192.168.100.1/CmUpstream.asp   8. http://user:user@192.168.100.1/CmUpBurst.asp   9. http://user:user@192.168.100.1/CmOpConfig.asp  10. http://user:user@192.168.100.1/CmEventLog.asp  [1][IMG]                                                          [2]MODEM | [3]TOOLS  CABLE MODEM   [4]Information                        Cable Modem Operation Configuration  [5]Status             Network Access :               Allowed                        Maximum Downstream Data Rate : 0  [6]Downstream         Maximum Upstream Data Rate :   0                        Maximum Upstream Channel Burst 0  [7]Upstream           :                        Maximum Number of CPEs :       1  [8]Upstream Burst     Modem Capability :             Concatenation Enabled,                                                       Fragametation Enabled,  [9]Operation Config.                                 PHS Enabled   [10]Event Log                                        . References    Visible links   1. http://www.ambitbroadband.com/   2. http://user:user@192.168.100.1/CmNavigation.asp   3. http://user:user@192.168.100.1/TlNavigation.asp   4. http://user:user@192.168.100.1/CmInfo.asp   5. http://user:user@192.168.100.1/CmStatus.asp   6. http://user:user@192.168.100.1/CmDnstream.asp   7. http://user:user@192.168.100.1/CmUpstream.asp   8. http://user:user@192.168.100.1/CmUpBurst.asp   9. http://user:user@192.168.100.1/CmOpConfig.asp  10. http://user:user@192.168.100.1/CmEventLog.asp  [1][IMG]                                                          [2]MODEM | [3]TOOLS  CABLE MODEM           Cable Modem Event Log                       First Time   Last Time   Priority    Description  [4]Information       Mon Nov 02  Mon Nov 02  Information                       07:20:12    07:20:12    (7)         Authorized  [5]Status            2009        2009                       Mon Nov 02  Mon Nov 02  Information Registration  [6]Downstream        07:20:12    07:20:12    (7)         complete!                       2009        2009  [7]Upstream          Mon Nov 02  Mon Nov 02              We registered                       07:20:12    07:20:12    Information with a DOCSIS  [8]Upstream Burst    2009        2009        (7)         1.1 config                                                           file!  [9]Operation         Mon Nov 02  Mon Nov 02              Received a Config.               07:20:12    07:20:12    Information REG-RSP                       2009        2009        (7)         message from  [10]Event Log                                            the CMTS...                       Mon Nov 02  Mon Nov 02  Information Sending a                       07:20:12    07:20:12    (7)         REG-REQ to the                       2009        2009                    CMTS...                       Mon Nov 02  Mon Nov 02  Information CableModem                       07:20:12    07:20:12    (7)         SNMP configure                       2009        2009                    complete                       Mon Nov 02  Mon Nov 02  Information IP init                       07:20:08    07:20:08    (7)         completed ok                       2009        2009                       Mon Nov 02  Mon Nov 02  Information CableModem                       07:20:08    07:20:08    (7)         TFTP init ok                       2009        2009                       Time Not    Time Not    Information CableModem                       Established Established (7)         DHCP client                                                           init ok                                                           DHCP WARNING -                       Time Not    Time Not    Critical    Non-critical                       Established Established (3)         field invalid                                                           in response.                                                           MAP w/initial                       Time Not    Time Not    Information maintenance                       Established Established (7)         region                                                           received                       Time Not    Time Not    Information Downstream                       Established Established (7)         sync ok                       Time Not    Time Not    Information Beginning                       Established Established (7)         initial                                                           ranging...                       Time Not    Time Not    Information downstream                       Established Established (7)         time sync                                                           acquired...                       Time Not    Time Not    Information Downstream                       Established Established (7)         sync ok                       Time Not    Time Not    Information starting ds                       Established Established (7)         time sync                                                           acquisition...                                                           Locked on the                       Time Not    Time Not    Information downstream.                       Established Established (7)         Waiting for                                                           UCDs...                       Time Not    Time Not    Information Downstream                       Established Established (7)         lock ok                       Time Not    Time Not    Information Sync Start                       Established Established (7)                                                           DHCP WARNING -                       Time Not    Time Not    Critical    Non-critical                       Established Established (3)         field invalid                                                           in response.                                                           DHCP WARNING -                       Time Not    Time Not    Critical    Non-critical                       Established Established (3)         field invalid                                                           in response.                                                           Started                       Tue Sep 01  Tue Sep 01              Unicast                       08:49:24    08:49:24    Critical    Maintenance                       2009        2009        (3)         Ranging - No                                                           Response                                                           received - ...                                                           DHCP WARNING -                       Time Not    Time Not    Critical    Non-critical                       Established Established (3)         field invalid                                                           in response.                                                           No Ranging                       Time Not    Time Not    Critical    Response                       Established Established (3)         received - T3                                                           time-out                                                           No Ranging                       Time Not    Time Not    Critical    Response                       Established Established (3)         received - T3                                                           time-out                                                           No Ranging                       Time Not    Time Not    Critical    Response                       Established Established (3)         received - T3                                                           time-out                                                           No Ranging                       Time Not    Time Not    Critical    Response                       Established Established (3)         received - T3                                                           time-out                                                           No Ranging                       Time Not    Time Not    Critical    Response                       Established Established (3)         received - T3                                                           time-out                                                           No Ranging                       Time Not    Time Not    Critical    Response                       Established Established (3)         received - T3                                                           time-out                                                           No Ranging                       Time Not    Time Not    Critical    Response                       Established Established (3)         received - T3                                                           time-out                                                           No Ranging                       Time Not    Time Not    Critical    Response                       Established Established (3)         received - T3                                                           time-out                                                           No Ranging                       Time Not    Time Not    Critical    Response                       Established Established (3)         received - T3                                                           time-out                                 [11][  Refresh  ] [12][ Clear Log ]

Anyways, things were starting to get slow after 10:00 PM PST and got worse. Since I noticed my boxes to 192.168.100.1 showed packet losses (no problems to my router), I thought I had a bad/dying CAT5 network cable so I tried another one and a shorter one but still had the same problem.

I only had this Ambit/Ubee U10C018 cable modem since 10/4/2008 from the local TWC office. Is my cable modem already going bad? Maybe a known issue?

I was going to connect the modem to my updated Windows XP Pro. SP3 box, but I couldn't find the USB cable for the modem. I cannot find it in its coardboard box and cannot remember if it came with one. Did it?

Also, this is the first time I have seen things go wacky. Thank you in advance. :)
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rcdailey @ 2nd Nov 08:31AM:
Re: A cable modem problem?

I looked for that modem on line and the data sheet says the USB interface is 1.1. That's about 12Mbps, as I recall. That's not really as good as a NIC with 100Mbps. Doesn't your XP Pro SP3 have a network card?
--
In reality, there is no such thing as a clean human being.
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antdude @ 2nd Nov 11:27AM:
Re: A cable modem problem?

said by rcdailey :

I looked for that modem on line and the data sheet says the USB interface is 1.1. That's about 12Mbps, as I recall. That's not really as good as a NIC with 100Mbps. Doesn't your XP Pro SP3 have a network card?

Yes, I am using a NIC. I wanted to test out USB connection.

I think I resolved the problem. Dying router. I switched to my old Netgear RT311 router and things were better.
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antdude @ 3rd Nov 01:04AM:
Re: Bad Internet connection right now? Bad cable modem?

OK, this is considered resolved now. :)
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antdude @ 4th Nov 12:29AM:
Slow again...

Hmm, slow again and losing packets to the gateway.

-- 76.91.4.1 ping statistics ---
9 packets transmitted, 6 received, 33% packet loss, time 8018ms
rtt min/avg/max/mdev = 36.521/591.403/2445.521/861.858 ms, pipe 3
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AdamB2K3 @ 5th Nov 01:11PM:
Re: Slow again...

I've been hacking intermittent packet loss since January. Time Warner has not been able to find the problem. Good luck
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antdude @ 5th Nov 01:39PM:
Re: Slow again...

said by AdamB2K3 :

I've been hacking intermittent packet loss since January. Time Warner has not been able to find the problem. Good luck

It has been good yesterday and today for me so far.
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