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Thread: Random disconnections from a Terayon TJ715x cable modem?

  1. #61
    Ant
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    > >> Here are my current statistics (haven't been disconnected since before
    > >> 7:47 AM PDT, and I am sure another one is soon [ever 12-15 hours
    > >> usually]):

    > >
    > > HA! A few minutes later after my post, I got disconnected again. I think
    > > it is watching me. :P I think I got the data within five minutes after
    > > the quick disconnection:
    > > http://img80.imageshack.us/img80/4871/10082008fq3.gif for screen
    > > captures (I tried to collect fast as I could!).


    > At the instant of this failure, was your Netgear RT311 router part of
    > the overall configuration?


    That is correct. I have gotten the old Linksys that I am going to try
    with or a chance to try a direct connection to a computer. Maybe this
    weekend?
    --
    "May 10,000 ants never invade your underwear drawer." --unknown
    /\___/\
    / /\ /\ \ Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Please remove ANT if replying by e-mail.
    ( )

  2. #62
    Ant
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    > All the immediately interesting readings are on the "Downstream" page.


    > Although an ideal reading of the Downstream signal level, and SNR, would
    > be in the midst of a failure, I realize how difficult this may be
    > without a running script. For right now, lets have you take an
    > instantaneous reading and relay that. It wouldn't hurt to take just the
    > downstream signal level and downstream SNR readings hourly or every two
    > hours or so. We need to establish some kind of a new baseline since the
    > Ambit modem is now in play. This is important!



    I JUST got cut off (a few minutes?) again:

    Cable Modem Downstream
    Downstream Lock : Locked
    Downstream Channel Id : 71
    Downstream Frequency :
    Downstream Modulation : QAM256
    Downstream Symbol Rate : 5360537
    Downstream Interleave Depth : 32
    Downstream Receive Power Level : -1.9 dBmV
    Downstream SNR : 35.7 dB


    Here is what I saw BEFORE I got cut off:
    Downstream Lock : Locked
    Downstream Channel Id : 71
    Downstream Frequency :
    Downstream Modulation : QAM256
    Downstream Symbol Rate : 5360537
    Downstream Interleave Depth : 32
    Downstream Receive Power Level : -2.1 dBmV
    Downstream SNR : 35.3 dB


    > > What did you mean by flexed? Unscrew and loosen the coax connection from
    > > the modem?


    > When you installed the Ambit modem, you screwed the house R.F. cable to
    > the replacement Ambit modem and tightened its connector, with a 7/16"
    > open-end wrench or its equivalent, such that the cable's "F" connector


    I used my fingers until I couldn't turn screw anymore on the cable
    modem. Using a wrench or something else sounds a bit extreme to me. ;)


    > is *slightly* more than finger tight. Now you should be able to observe
    > your systems when you ever so *slightly* bend the R.F. cable back and
    > forth taking note whether anything fails. We are looking for an
    > intermittent connection - either in the cable, at the connector, or in
    > the cable modem at the coax connector.


    I didn't see anything odd while wiggling, soft bending/flexxing, etc. on
    the cable connected to the modem.
    --
    "May 10,000 ants never invade your underwear drawer." --unknown
    /\___/\
    / /\ /\ \ Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Please remove ANT if replying by e-mail.
    ( )

  3. #63
    Ant
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    > > At the time you took this snapshot of conditions, the "Downstream
    > > Receive Power Level : -1.5 dBmV" is excellent by almost any
    > > standard. Loosely speaking, 0 dBmV is the ideal with a +/- 12 dBmV
    > > range of acceptability.


    > > The "Downstream SNR : 34.4 dB" is acceptable. For QAM256
    > > modulation, a number more positive than 33.0 dB is OK. Would be nicer
    > > if this was more positive than 35 dB. These numbers will vary with time
    > > of day, temperature and many factors in, but mostly out of your control.
    > > When your downstream SNR was 29.0 dB, technically this was 4 dB in the
    > > bad area. Keep monitoring this! I am suspicious that this condition
    > > might yet return!


    > Will do. Here's one as I type this post:


    > Cable Modem Downstream


    > Downstream Lock : Locked
    > Downstream Channel Id : 71
    > Downstream Frequency :
    > Downstream Modulation : QAM256
    > Downstream Symbol Rate : 5360537
    > Downstream Interleave Depth : 32
    > Downstream Receive Power Level : -1.9 dBmV
    > Downstream SNR : 35.0 dB



    > Haven't had any more disconnections since I mentioned last night.


    Not again (it's watching me post, haha). I just got another one a few
    minutes ago so I reconnected to my home Debian/Linux box, and used Lynx
    to see http://192.168.100.1/CmDnstream.asp (after logging in; might be a
    couple minutes later after the quick disconnection):

    Cable Modem Downstream
    Downstream Lock : Locked
    Downstream Channel Id : 71
    Downstream Frequency :
    Downstream Modulation : QAM256
    Downstream Symbol Rate : 5360537
    Downstream Interleave Depth : 32
    Downstream Receive Power Level : -1.9 dBmV
    Downstream SNR : 35.7 dB

    Seems like SNR is not changing much before and after. I will keep
    watching this for future disconnections.
    --
    "May 10,000 ants never invade your underwear drawer." --unknown
    /\___/\
    / /\ /\ \ Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Please remove ANT if replying by e-mail.
    ( )

  4. #64
    1PW
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    On 10/09/2008 01:41 PM, Ant sent:
    >> All the immediately interesting readings are on the "Downstream" page.

    >
    >
    >> Although an ideal reading of the Downstream signal level, and SNR, would
    >> be in the midst of a failure, I realize how difficult this may be
    >> without a running script. For right now, lets have you take an
    >> instantaneous reading and relay that. It wouldn't hurt to take just the
    >> downstream signal level and downstream SNR readings hourly or every two
    >> hours or so. We need to establish some kind of a new baseline since the
    >> Ambit modem is now in play. This is important!

    >
    >
    > I JUST got cut off (a few minutes?) again:
    >
    > Cable Modem Downstream
    > Downstream Lock : Locked
    > Downstream Channel Id : 71
    > Downstream Frequency :
    > Downstream Modulation : QAM256
    > Downstream Symbol Rate : 5360537
    > Downstream Interleave Depth : 32
    > Downstream Receive Power Level : -1.9 dBmV
    > Downstream SNR : 35.7 dB
    >
    >
    > Here is what I saw BEFORE I got cut off:
    > Downstream Lock : Locked
    > Downstream Channel Id : 71
    > Downstream Frequency :
    > Downstream Modulation : QAM256
    > Downstream Symbol Rate : 5360537
    > Downstream Interleave Depth : 32
    > Downstream Receive Power Level : -2.1 dBmV
    > Downstream SNR : 35.3 dB
    >
    >
    >>> What did you mean by flexed? Unscrew and loosen the coax connection from
    >>> the modem?

    >
    >> When you installed the Ambit modem, you screwed the house R.F. cable to
    >> the replacement Ambit modem and tightened its connector, with a 7/16"
    >> open-end wrench or its equivalent, such that the cable's "F" connector

    >
    > I used my fingers until I couldn't turn screw anymore on the cable
    > modem. Using a wrench or something else sounds a bit extreme to me. ;)
    >


    This is the return/ground/shield of the coaxial unbalanced connection.
    It is a very important part in the circuit. The shield is also trying
    to keep ambient noise from the other portion of the unbalanced circuit;
    the inner conductor.

    Notice how the SNRs have almost a 7 dB improvement! Some folks would be
    very envious of those numbers.

    >
    >> is *slightly* more than finger tight. Now you should be able to observe
    >> your systems when you ever so *slightly* bend the R.F. cable back and
    >> forth taking note whether anything fails. We are looking for an
    >> intermittent connection - either in the cable, at the connector, or in
    >> the cable modem at the coax connector.

    >
    > I didn't see anything odd while wiggling, soft bending/flexing, etc. on
    > the cable connected to the modem.


    That's excellent!

    --
    1PW

    @?6A62?FEH9:DE=6o2@=]4@> [r4o7t]

  5. #65
    Ant
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    > > I used my fingers until I couldn't turn screw anymore on the cable
    > > modem. Using a wrench or something else sounds a bit extreme to me. ;)
    > >


    > This is the return/ground/shield of the coaxial unbalanced connection.
    > It is a very important part in the circuit. The shield is also trying
    > to keep ambient noise from the other portion of the unbalanced circuit;
    > the inner conductor.


    > Notice how the SNRs have almost a 7 dB improvement! Some folks would be
    > very envious of those numbers.


    So it looks like the cable modem swap was worth it. :) Let's just hope
    the quick disconnections are from the router or something I can fix
    easily.


    > >> is *slightly* more than finger tight. Now you should be able to observe
    > >> your systems when you ever so *slightly* bend the R.F. cable back and
    > >> forth taking note whether anything fails. We are looking for an
    > >> intermittent connection - either in the cable, at the connector, or in
    > >> the cable modem at the coax connector.

    > >
    > > I didn't see anything odd while wiggling, soft bending/flexing, etc. on
    > > the cable connected to the modem.


    > That's excellent!


    Cool. ;)
    --
    "May 10,000 ants never invade your underwear drawer." --unknown
    /\___/\
    / /\ /\ \ Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Please remove ANT if replying by e-mail.
    ( )

  6. #66
    Ant
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    Another one:

    Cable Modem Downstream

    Downstream Lock : Locked
    Downstream Channel Id : 71
    Downstream Frequency :
    Downstream Modulation : QAM256
    Downstream Symbol Rate : 5360537
    Downstream Interleave Depth : 32
    Downstream Receive Power Level : -1.3 dBmV
    Downstream SNR : 34.1 dB


    Cable Modem Status

    Item Status Comments
    Acquire a Downstream Channel 705000000 Hz Locked
    Connectivity State OK Operational
    Boot State OK Operational
    Security Enabled BPI+


    Cable Modem Upstream

    Upstream Lock : Locked
    Upstream Channel ID : 7
    Upstream Frequency :
    Upstream Modulation : QAM16
    Upstream Symbol Rate : 2560 Ksym/sec
    Upstream transmit Power Level : 38.8 dBmV
    Upstream Mini-Slot Size : 4


    Cable Modem Upstream Burst
    Modulation Type QPSK QPSK QPSK 16QAM
    16QAM
    Differential Encoding Off Off Off Off
    Off
    Preamble Length 64 640 384 168
    192
    Preamble Value Offset 652 0 0 720
    720
    FEC Error Correction (T) 0 5 5 6
    8
    FEC Codeword Information Bytes (k) 16 34 34 78
    220
    Scrambler Seed 338 338 338 338
    338
    Maximum Burst Size 0 0 0 23
    255
    Guard Time Size 8 48 48 8
    8
    Last Codeword Length Fixed Fixed Fixed Short
    Short
    Scrambler on/off On On On On
    On


    Cable Modem Operation Configuration

    Network Access : Allowed
    Maximum Downstream Data Rate : 0
    Maximum Upstream Data Rate : 0
    Maximum Upstream Channel Burst : 0
    Maximum Number of CPEs : 1
    Modem Capability : Concatenation Enabled, Fragametation
    Enabled, PHS Enabled


    Cable Modem Event Log

    First Time Last Time Counts Level ID Text
    Thu Oct 09 20:43:26 2008 Thu Oct 09 20:43:26 2008 1 Warning (5) 68010300
    DHCP
    RENEW WARNING - Field invalid in response



    On 10/9/2008 1:41 PM PT, Ant typed:

    > I JUST got cut off (a few minutes?) again:
    >
    > Cable Modem Downstream
    > Downstream Lock : Locked
    > Downstream Channel Id : 71
    > Downstream Frequency :
    > Downstream Modulation : QAM256
    > Downstream Symbol Rate : 5360537
    > Downstream Interleave Depth : 32
    > Downstream Receive Power Level : -1.9 dBmV
    > Downstream SNR : 35.7 dB
    >
    >
    > Here is what I saw BEFORE I got cut off:
    > Downstream Lock : Locked
    > Downstream Channel Id : 71
    > Downstream Frequency :
    > Downstream Modulation : QAM256
    > Downstream Symbol Rate : 5360537
    > Downstream Interleave Depth : 32
    > Downstream Receive Power Level : -2.1 dBmV
    > Downstream SNR : 35.3 dB

    --
    "A coconut shell full of water is a(n) sea/ocean to an ant." --Indians
    /\___/\
    / /\ /\ \ Phil/Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
    ( ) or ANTant@zimage.com
    Ant is currently not listening to any songs on his home computer.

  7. #67
    1PW
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    On 10/10/2008 12:14 AM, Ant sent:

    > Cable Modem Event Log
    >
    > First Time Last Time Counts Level ID Text
    > Thu Oct 09 20:43:26 2008 Thu Oct 09 20:43:26 2008 1 Warning (5) 68010300
    > DHCP
    > RENEW WARNING - Field invalid in response


    This log entry seems rather cryptic. I'm wondering if your DHCP lease
    was up for renewal, and it initially failed?

    Does this coincide with any other connection failures at the same time?

    --
    1PW

    @?6A62?FEH9:DE=6o2@=]4@> [r4o7t]

  8. #68
    Ant
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    On 10/10/2008 7:11 AM PT, 1PW typed:

    > On 10/10/2008 12:14 AM, Ant sent:
    >
    >> Cable Modem Event Log
    >>
    >> First Time Last Time Counts Level ID Text
    >> Thu Oct 09 20:43:26 2008 Thu Oct 09 20:43:26 2008 1 Warning (5) 68010300
    >> DHCP
    >> RENEW WARNING - Field invalid in response

    >
    > This log entry seems rather cryptic. I'm wondering if your DHCP lease
    > was up for renewal, and it initially failed?
    >
    > Does this coincide with any other connection failures at the same time?


    Nope. At that time, I didn't see any disconnections. AND is that clock
    even accurate? I remember my old Terayon modem was inacccurate with its
    time. I think it was like a few hours off. I haven't figured out the
    pattern for this one.
    --
    "A coconut shell full of water is a(n) sea/ocean to an ant." --Indians
    /\___/\
    / /\ /\ \ Phil/Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
    ( ) or ANTant@zimage.com
    Ant is currently not listening to any songs on his home computer.

  9. #69
    Ant
    Guest

    Re: Random disconnections from Terayon TJ715x & Ambit U10C018 cablemodems?

    Last one unless you guys want me to post more. I think I got a good
    snapshot of the logs now that I have a script to view cable modem's Web
    pages at every minute (can't do second or else cable modem blocks my
    http requests and I have to manually power cycle the modem).

    Running script showed this when connection was working and then got
    disconnected again (no route to host; previous disconnetion was at about
    12:41 AM PDT):

    ....
    Sun Oct 12 15:31:17 PDT 2008
    Sun Oct 12 15:32:18 PDT 2008
    ELinks: No route to host
    ELinks: No route to host
    ELinks: No route to host (my modem didn't respond and I got disconnected
    from the Internet)
    ELinks: No route to host
    ELinks: No route to host
    ELinks: No route to host
    Sun Oct 12 15:33:18 PDT 2008
    Sun Oct 12 15:34:03 PDT 2008
    ^C (I aborted it once I got the logs)


    --


    My outputted log showed (removed all the rest and only showing before,
    during, and after the quick disconnection):

    Sun Oct 12 15:31:17 PDT 2008

    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=5.10 ms

    --- 192.168.100.1 ping statistics ---
    1 packets transmitted, 1 received, 0% packet loss, time 0ms
    rtt min/avg/max/mdev = 5.104/5.104/5.104/0.000 ms

    Cable Modem Information
    Cable Modem : DOCSIS 1.0/1.1/2.0 Compliant
    MAC Address : [deleted]
    Serial Number : [deleted]
    Boot Code Version : 2.1.6d
    Software Version : 2.93.1008
    Hardware Version : 1.20


    Cable Modem Status
    Item Status Comments
    Acquire a Downstream Channel 705000000 Hz Locked
    Connectivity State OK Operational
    Boot State OK Operational
    Security Enabled BPI+


    Cable Modem Downstream
    Downstream Lock : Locked
    Downstream Channel Id : 71
    Downstream Frequency :
    Downstream Modulation : QAM256
    Downstream Symbol Rate : 5360537
    Downstream Interleave Depth : 32
    Downstream Receive Power Level : -2.2 dBmV
    Downstream SNR : 36.3 dB


    Cable Modem Upstream
    Upstream Lock : Locked
    Upstream Channel ID : 7
    Upstream Frequency :
    Upstream Modulation : QAM16
    Upstream Symbol Rate : 2560 Ksym/sec
    Upstream transmit Power Level : 39.3 dBmV
    Upstream Mini-Slot Size : 4


    Cable Modem Upstream Burst
    Req Init Per Short Long
    Maint Maint Data Data
    (1) (3) (4) (5) (6)
    Modulation Type QPSK QPSK QPSK 16QAM 16QAM
    Differential Encoding Off Off Off Off Off
    Preamble Length 64 640 384 168 192
    Preamble Value Offset 652 0 0 720 720
    FEC Error Correction (T) 0 5 5 6 8
    FEC Codeword Information
    Bytes (k) 16 34 34 78 220
    Scrambler Seed 338 338 338 338 338
    Maximum Burst Size 0 0 0 23 255
    Guard Time Size 8 48 48 8 8
    Last Codeword Length Fixed Fixed Fixed Short Short
    Scrambler on/off On On On On On


    Cable Modem Operation Configuration
    Network Access : Allowed
    Maximum Downstream Data Rate : 0
    Maximum Upstream Data Rate : 0
    Maximum Upstream Channel Burst:0
    Maximum Number of CPEs : 1
    Modem Capability : Concatenation Enabled,
    Fragametation Enabled,
    PHS Enabled


    Cable Modem Event Log
    First Time Last Time Counts Level ID Text


    --


    Sun Oct 12 15:32:18 PDT 2008

    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=6.16 ms

    --- 192.168.100.1 ping statistics ---
    1 packets transmitted, 1 received, 0% packet loss, time 0ms
    rtt min/avg/max/mdev = 6.162/6.162/6.162/0.000 ms


    Cable Modem Information
    Cable Modem : DOCSIS 1.0/1.1/2.0 Compliant
    MAC Address : [deleted]
    Serial Number : [deleted]
    Boot Code Version : 2.1.6d
    Software Version : 2.93.1008
    Hardware Version : 1.20


    --


    Connection to cable modem seems to have stopped right here and I was
    disconnected from the Internet (actually, the cable modem) for about a
    minute.


    --


    Sun Oct 12 15:33:18 PDT 2008

    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=6.24 ms

    --- 192.168.100.1 ping statistics ---
    1 packets transmitted, 1 received, 0% packet loss, time 0ms
    rtt min/avg/max/mdev = 6.248/6.248/6.248/0.000 ms

    Cable Modem Information
    Cable Modem : DOCSIS 1.0/1.1/2.0 Compliant
    MAC Address : [deleted]
    Serial Number : [deleted]
    Boot Code Version : 2.1.6d
    Software Version : 2.93.1008
    Hardware Version : 1.20


    Cable Modem Status
    Item Status Comments
    Acquire a Downstream Channel 705000000 Hz Locked
    Connectivity State OK Operational
    Boot State OK Operational
    Security Enabled BPI+

    Cable Modem Downstream
    Downstream Lock : Locked
    Downstream Channel Id : 71
    Downstream Frequency :
    Downstream Modulation : QAM256
    Downstream Symbol Rate : 5360537
    Downstream Interleave Depth : 32
    Downstream Receive Power Level : -2.1 dBmV
    Downstream SNR : 36.1 dB


    Cable Modem Upstream
    Upstream Lock : Locked
    Upstream Channel ID : 7
    Upstream Frequency :
    Upstream Modulation : QAM16
    Upstream Symbol Rate : 2560 Ksym/sec
    Upstream transmit Power Level : 39.3 dBmV
    Upstream Mini-Slot Size : 4


    Cable Modem Upstream Burst
    Req Init Per Short Long
    Maint Maint Data Data
    (1) (3) (4) (5) (6)
    Modulation Type QPSK QPSK QPSK 16QAM 16QAM
    Differential Encoding Off Off Off Off Off
    Preamble Length 64 640 384 168 192
    Preamble Value Offset 652 0 0 720 720
    FEC Error Correction (T) 0 5 5 6 8
    FEC Codeword Info.
    Bytes (k) 16 34 34 78 220
    Scrambler Seed 338 338 338 338 338
    Maximum Burst Size 0 0 0 23 255
    Guard Time Size 8 48 48 8 8
    Last Codeword Length Fixed Fixed Fixed Short Short
    Scrambler on/off On On On On On


    Cable Modem Operation Configuration
    Network Access : Allowed
    Maximum Downstream Data Rate : 0
    Maximum Upstream Data Rate : 0
    Maximum Upstream Channel Burst:0
    Maximum Number of CPEs : 1
    Modem Capability : Concatenation Enabled,
    Fragametation Enabled,
    PHS Enabled

    Cable Modem Event Log
    First Time Last Time Counts Level ID Text


    --


    Sun Oct 12 15:34:03 PDT 2008

    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=6.14 ms

    --- 192.168.100.1 ping statistics ---
    1 packets transmitted, 1 received, 0% packet loss, time 0ms
    rtt min/avg/max/mdev = 6.140/6.140/6.140/0.000 ms

    Cable Modem Information
    Cable Modem : DOCSIS 1.0/1.1/2.0 Compliant
    MAC Address : [deleted]
    Serial Number : [deleted]
    Boot Code Version : 2.1.6d
    Software Version : 2.93.1008
    Hardware Version : 1.20


    Cable Modem Status
    Item Status Comments
    Acquire a Downstream Channel 705000000 Hz Locked
    Connectivity State OK Operational
    Boot State OK Operational
    Security Enabled BPI+


    Cable Modem Downstream
    Downstream Lock : Locked
    Downstream Channel Id : 71
    Downstream Frequency :
    Downstream Modulation : QAM256
    Downstream Symbol Rate : 5360537
    Downstream Interleave Depth : 32
    Downstream Receive Power Level : -1.9 dBmV
    Downstream SNR : 36.1 dB


    Cable Modem Upstream
    Upstream Lock : Locked
    Upstream Channel ID : 7
    Upstream Frequency :
    Upstream Modulation : QAM16
    Upstream Symbol Rate : 2560 Ksym/sec
    Upstream transmit Power Level : 39.3 dBmV
    Upstream Mini-Slot Size : 4


    Cable Modem Upstream Burst
    Req Init Per Short Long
    Maint Maint Data Data
    (1) (3) (4) (5) (6)
    Modulation Type QPSK QPSK QPSK 16QAM 16QAM
    Differential Encoding Off Off Off Off Off
    Preamble Length 64 640 384 168 192
    Preamble Value Offset 652 0 0 720 720
    FEC Error Correction (T) 0 5 5 6 8
    FEC Codeword Information
    Bytes (k) 16 34 34 78 220
    Scrambler Seed 338 338 338 338 338
    Maximum Burst Size 0 0 0 23 255
    Guard Time Size 8 48 48 8 8
    Last Codeword Length Fixed Fixed Fixed Short Short
    Scrambler on/off On On On On On


    Cable Modem Operation Configuration
    Network Access : Allowed
    Maximum Downstream Data Rate : 0
    Maximum Upstream Data Rate : 0
    Maximum Upstream Channel Burst:0
    Maximum Number of CPEs : 1
    Modem Capability : Concatenation Enabled,
    Fragametation Enabled,
    PHS Enabled


    Cable Modem Event Log
    First Time Last Time Counts Level ID Text


    Note: Event logs was cleared earlier to see if any new ones come up.

    I am going to stop logging unless you guys think I should get more. My
    next plan is still to try direct connection or get another router
    (haven't gotten an used Linksys router yet to try it yet). I thought I
    could do that this weekend, but guess not. :(
    --
    "Although you're a little ant, I won't bully you." --Sai Yuk from The
    Legend of Fong Sai Yuk movie (English subtitles)
    /\___/\
    / /\ /\ \ Phil/Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
    ( ) or ANTant@zimage.com
    Ant is currently not listening to any songs on his home computer.

  10. #70
    1PW
    Guest

    Re: Random disconnections from Terayon TJ715x & Ambit U10C018 cablemodems?

    On 10/12/2008 04:24 PM, Ant sent:

    >
    > I am going to stop logging unless you guys think I should get more. My
    > next plan is still to try direct connection or get another router
    > (haven't gotten an used Linksys router yet to try it yet). I thought I
    > could do that this weekend, but guess not. :(


    Your experiences with a direct [Computer <> Ethernet <> Cable Modem]
    connection would still be very valuable information.

    Good luck.

    --
    1PW

    @?6A62?FEH9:DE=6o2@=]4@> [r4o7t]

  11. #71
    Ant
    Guest

    Re: Random disconnections from Terayon TJ715x & Ambit U10C018 cablemodems?

    On 10/12/2008 8:25 PM PT, 1PW typed:

    > On 10/12/2008 04:24 PM, Ant sent:
    >
    >> I am going to stop logging unless you guys think I should get more. My
    >> next plan is still to try direct connection or get another router
    >> (haven't gotten an used Linksys router yet to try it yet). I thought I
    >> could do that this weekend, but guess not. :(

    >
    > Your experiences with a direct [Computer <> Ethernet <> Cable Modem]
    > connection would still be very valuable information.


    Yep, that's my next plan. Just don't have the time. I want to try
    another router first so I don't have to wait so long and take other
    people offline. :>
    --
    "You feel the faint grit of ants beneath your shoes, but keep on walking
    because in this world you have to decide what you're willing to kill."
    --Tony Hoagland from "Candlelight"
    /\___/\
    / /\ /\ \ Phil/Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
    ( ) or ANTant@zimage.com
    Ant is currently not listening to any songs on his home computer.

  12. #72
    Ant
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    1PW <barcrnahgjuvfgyr@nby.pbz> wrote:
    > On 10/10/2008 12:14 AM, Ant sent:


    > > Cable Modem Event Log
    > >
    > > First Time Last Time Counts Level ID Text
    > > Thu Oct 09 20:43:26 2008 Thu Oct 09 20:43:26 2008 1 Warning (5) 68010300
    > > DHCP
    > > RENEW WARNING - Field invalid in response


    > This log entry seems rather cryptic. I'm wondering if your DHCP lease
    > was up for renewal, and it initially failed?


    > Does this coincide with any other connection failures at the same time?


    About 30 minutes ago, I got another one of those (don't know if it is
    related to the quick disconnections):

    Cable Modem Event Log
    First Last Counts Level ID Text
    Time Time
    DHCP
    Tue Oct Tue Oct RENEW
    14 14 Warning WARNING
    14:16:03 14:16:03 1 (5) 68010300 - Field
    2008 2008 invalid
    in
    response
    --
    "Trivial hurts, tiny human accidents," said Firenze, as his hooves
    thudded over the mossy floor. "These are of no more significance than
    the scurryings of ants to the wide universe, and are unaffected by
    planetary movements." --Harry Potter book
    /\___/\
    / /\ /\ \ Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Please remove ANT if replying by e-mail.
    ( )

  13. #73
    1PW
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    On 10/14/2008 12:27 PM, Ant sent:
    > 1PW <barcrnahgjuvfgyr@nby.pbz> wrote:
    >> On 10/10/2008 12:14 AM, Ant sent:

    >
    >>> Cable Modem Event Log
    >>>
    >>> First Time Last Time Counts Level ID Text
    >>> Thu Oct 09 20:43:26 2008 Thu Oct 09 20:43:26 2008 1 Warning (5) 68010300
    >>> DHCP
    >>> RENEW WARNING - Field invalid in response

    >
    >> This log entry seems rather cryptic. I'm wondering if your DHCP lease
    >> was up for renewal, and it initially failed?

    >
    >> Does this coincide with any other connection failures at the same time?

    >
    > About 30 minutes ago, I got another one of those (don't know if it is
    > related to the quick disconnections):
    >
    > Cable Modem Event Log
    > First Last Counts Level ID Text
    > Time Time
    > DHCP
    > Tue Oct Tue Oct RENEW
    > 14 14 Warning WARNING
    > 14:16:03 14:16:03 1 (5) 68010300 - Field
    > 2008 2008 invalid
    > in
    > response


    The more I think about this, the more I believe this is a DHCP lease
    expiring and needing renewal. This is probably not a serious error
    but merely a warning message in passing.

    --
    1PW

    @?6A62?FEH9:DE=6o2@=]4@> [r4o7t]

  14. #74
    Ant
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    On 10/14/2008 3:56 PM PT, 1PW typed:

    >>>> First Time Last Time Counts Level ID Text
    >>>> Thu Oct 09 20:43:26 2008 Thu Oct 09 20:43:26 2008 1 Warning (5) 68010300
    >>>> DHCP
    >>>> RENEW WARNING - Field invalid in response
    >>> This log entry seems rather cryptic. I'm wondering if your DHCP lease
    >>> was up for renewal, and it initially failed?
    >>> Does this coincide with any other connection failures at the same time?

    >> About 30 minutes ago, I got another one of those (don't know if it is
    >> related to the quick disconnections):
    >>
    >> Cable Modem Event Log
    >> First Last Counts Level ID Text
    >> Time Time
    >> DHCP
    >> Tue Oct Tue Oct RENEW
    >> 14 14 Warning WARNING
    >> 14:16:03 14:16:03 1 (5) 68010300 - Field
    >> 2008 2008 invalid
    >> in
    >> response

    >
    > The more I think about this, the more I believe this is a DHCP lease
    > expiring and needing renewal. This is probably not a serious error
    > but merely a warning message in passing.


    OK. I checked again, same exact messages. Nothing new there. Thanks.

    It looks like I will be getting an old and used Linksys BEFSX41 4-port
    firewall router this Saturday to test my quick disconnet issue. It was
    bundled with Norton Internet Security 2003 CD, so I assume it is about
    five years old.
    --
    "Not all ants use violence to dominate their world, some use more subtle
    methods..." --E.O. Wilson on NOVA
    /\___/\
    / /\ /\ \ Phil/Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
    ( ) or ANTant@zimage.com
    Ant is currently not listening to any songs on his home computer.

  15. #75
    1PW
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    On 10/14/2008 11:05 PM, Ant sent:
    > On 10/14/2008 3:56 PM PT, 1PW typed:
    >
    >>>>> First Time Last Time Counts Level ID Text
    >>>>> Thu Oct 09 20:43:26 2008 Thu Oct 09 20:43:26 2008 1 Warning (5)
    >>>>> 68010300
    >>>>> DHCP
    >>>>> RENEW WARNING - Field invalid in response
    >>>> This log entry seems rather cryptic. I'm wondering if your DHCP lease
    >>>> was up for renewal, and it initially failed?
    >>>> Does this coincide with any other connection failures at the same time?
    >>> About 30 minutes ago, I got another one of those (don't know if it is
    >>> related to the quick disconnections):
    >>>
    >>> Cable Modem Event Log
    >>> First Last Counts Level ID Text
    >>> Time Time
    >>> DHCP
    >>> Tue Oct Tue Oct RENEW
    >>> 14 14 Warning WARNING
    >>> 14:16:03 14:16:03 1 (5) 68010300 - Field
    >>> 2008 2008 invalid
    >>> in
    >>> response

    >>
    >> The more I think about this, the more I believe this is a DHCP lease
    >> expiring and needing renewal. This is probably not a serious error
    >> but merely a warning message in passing.

    >
    > OK. I checked again, same exact messages. Nothing new there. Thanks.
    >
    > It looks like I will be getting an old and used Linksys BEFSX41 4-port
    > firewall router this Saturday to test my quick disconnect issue. It was
    > bundled with Norton Internet Security 2003 CD, so I assume it is about
    > five years old.


    It's almost a 100% guarantee that you will require a firmware update.
    You may wish to research this and try to determine the present firmware
    level and what's available.

    --
    1PW

    @?6A62?FEH9:DE=6o2@=]4@> [r4o7t]

  16. #76
    Ant
    Guest

    Re: Random disconnections from a Terayon TJ715x cable modem?

    On 10/15/2008 3:50 PM PT, 1PW typed:

    >> It looks like I will be getting an old and used Linksys BEFSX41 4-port
    >> firewall router this Saturday to test my quick disconnect issue. It was
    >> bundled with Norton Internet Security 2003 CD, so I assume it is about
    >> five years old.

    >
    > It's almost a 100% guarantee that you will require a firmware update.
    > You may wish to research this and try to determine the present firmware
    > level and what's available.


    Yea. I noticed the latest one is from 2007. That's amazing compared to
    my old Netgear RT311. Its latest firmware is v3.25 from 5/4/2001.
    --
    "The world flatters the elephant and tramples on the ant." --Indian
    /\___/\
    / /\ /\ \ Phil/Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
    ( ) or ANTant@zimage.com
    Ant is currently not listening to any songs on his home computer.

  17. #77
    Ant
    Guest

    Re: Random disconnections from Terayon TJ715x & Ambit U10C018 cablemodems?

    On 10/13/2008 12:45 AM PT, Ant typed:

    > On 10/12/2008 8:25 PM PT, 1PW typed:
    >
    >> On 10/12/2008 04:24 PM, Ant sent:
    >>
    >>> I am going to stop logging unless you guys think I should get more. My
    >>> next plan is still to try direct connection or get another router
    >>> (haven't gotten an used Linksys router yet to try it yet). I thought I
    >>> could do that this weekend, but guess not. :(

    >>
    >> Your experiences with a direct [Computer <> Ethernet <> Cable Modem]
    >> connection would still be very valuable information.

    >
    > Yep, that's my next plan. Just don't have the time. I want to try
    > another router first so I don't have to wait so long and take other
    > people offline. :>


    Alrighty, I finally got the old Linksys BEFSX41 router hooked up,
    upgraded (Firmware Version: 1.52.15), and online.

    I just missed another quick disconnection about an hour ago before I
    swapped the routers. I will have to wait about another 12-15 hours for
    the next one). Let's see how this one goes. If this router still has the
    quick disconnections, then I am going back to my old Netgear router
    (will sve Linksys one for later when my old Netgear finally dies :P).

    Does anyone know how to let my Internet IP address be pingable from the
    outside? I can't seem to find the option to set that (way more
    configurations than my old Netgear RT311). I wan't able to find it via
    Google search (all internal pings).

    Thank you in advance. :)
    --
    "Bother," said Winnie the Pooh, as the ants devoured him.
    /\___/\
    / /\ /\ \ Phil/Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
    ( ) or ANTant@zimage.com
    Ant is currently not listening to any songs on his home computer.

    --
    "I have to sit up with a sick ant." --unknown
    /\___/\
    / /\ /\ \ Phil/Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
    ( ) or ANTant@zimage.com
    Ant is currently not listening to any songs on his home computer.

  18. #78
    Bill M.
    Guest

    Re: Random disconnections from Terayon TJ715x & Ambit U10C018 cable modems?

    On Sat, 18 Oct 2008 20:15:24 -0700, Ant <ANTant@zimage.com> wrote:

    >Does anyone know how to let my Internet IP address be pingable from the
    >outside? I can't seem to find the option to set that (way more
    >configurations than my old Netgear RT311). I wan't able to find it via
    >Google search (all internal pings).


    I think it's on page 25 of the user guide, where they talk about the
    items on the Security tab. Disable the option called Block WAN
    Requests.

    --
    Bill

  19. #79
    Ant
    Guest

    Re: Random disconnections from Terayon TJ715x & Ambit U10C018 cablemodems?

    On 10/18/2008 10:36 PM PT, Bill M. typed:

    > On Sat, 18 Oct 2008 20:15:24 -0700, Ant <ANTant@zimage.com> wrote:
    >
    >> Does anyone know how to let my Internet IP address be pingable from the
    >> outside? I can't seem to find the option to set that (way more
    >> configurations than my old Netgear RT311). I wan't able to find it via
    >> Google search (all internal pings).

    >
    > I think it's on page 25 of the user guide, where they talk about the
    > items on the Security tab. Disable the option called Block WAN
    > Requests.


    It was "Block Anonymous Internet Requests". However, I am having
    problems keeping my IRC connections stable. According to the router's logs:

    2008-10-18 22:17:12 1586/TCP from [deleted IRC sever's IP address]:6667
    to 192.168.0.22:1586 Invalid TCP packet received, dropping packet

    Note: I changed from 192.168.1.xxx to 192.168.0.xxx so I didn't have to
    reconfigure the computers and stuff. :)
    --
    "Stir up an ant's nest." --unknown
    /\___/\
    / /\ /\ \ Phil/Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
    ( ) or ANTant@zimage.com
    Ant is currently not listening to any songs on his home computer.

  20. #80
    Ant
    Guest

    Re: Random disconnections from Terayon TJ715x & Ambit U10C018 cablemodems?

    On 10/18/2008 8:15 PM PT, Ant typed:

    >>>> I am going to stop logging unless you guys think I should get more. My
    >>>> next plan is still to try direct connection or get another router
    >>>> (haven't gotten an used Linksys router yet to try it yet). I thought I
    >>>> could do that this weekend, but guess not. :(
    >>>
    >>> Your experiences with a direct [Computer <> Ethernet <> Cable Modem]
    >>> connection would still be very valuable information.

    >>
    >> Yep, that's my next plan. Just don't have the time. I want to try
    >> another router first so I don't have to wait so long and take other
    >> people offline. :>

    >
    > Alrighty, I finally got the old Linksys BEFSX41 router hooked up,
    > upgraded (Firmware Version: 1.52.15), and online.
    >
    > I just missed another quick disconnection about an hour ago before I
    > swapped the routers. I will have to wait about another 12-15 hours for
    > the next one). Let's see how this one goes. If this router still has the
    > quick disconnections, then I am going back to my old Netgear router
    > (will save Linksys one for later when my old Netgear finally dies :P).


    Well, so far I haven't seen any random annoying quick disconnections
    that aren't caused by me. However, is too early to conclude that it is
    fixed since I have been tweaking my router (requires to drop
    connections) most of the day yesterday and Saturday night. I haven't had
    seen the random disconnections during the hours I didn't tweak like
    Sunday's midnight to Sunday's 10 AM PDT, and Sunday's afternoon to now).

    My current issue, with this Linksys router, is having problems keeping
    my text-based IRC clients (BitchX, ircii, and Epic4) staying connected
    online. They keep getting disconnected after five minutes or so.
    Ironically, GUI-based clients (e.g., Pidgin, Trillian Basic, and
    SeaMonkey) do NOT have this problem. I don't understand why that
    happens. It is quite frustrating since I use IRC a lot through SSH
    connections and I prefer text-based clients, especially when I am not at
    my computers. I never had this problem with my old Netgear RT311 router
    (might have to go back to it if I want text-based IRC or get a brand new
    router).

    I wonder why my old router had random quick disconnections. Old age
    perhaps? :(
    --
    "As when death smites the swollen brooding thing that inhabits their
    crawling hill and holds them all in sway, ants will wander witless and
    purposeless and then feebly die, so the creatures of Sauron, orc or
    troll or beast spell-enslaved, ran hither and thither mindless; and some
    slew themselves, or cast themselves in pits, or fled wailing back to
    hide in holes and dark lightless places far from hope." --The Return of
    the King (book)
    /\___/\
    / /\ /\ \ Phil/Ant @ http://antfarm.home.dhs.org (Personal Web Site)
    | |o o| | Ant's Quality Foraged Links (AQFL): http://aqfl.net
    \ _ / Remove ANT from e-mail address: philpi@earthlink.netANT
    ( ) or ANTant@zimage.com
    Ant is currently not listening to any songs on his home computer.

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