http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7362152 en Wed, 23 Mar 2022 18:13:15 EDT Wed, 23 Mar 2022 18:13:15 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7557678
There is no question, something has changed on the COX network here in South Orange County and has created an incompatibility between COX HSI and Linksys Routers (BEFSR41, BEFSR81 and BEFSX41). I have not got any confirmation from COX, but it is pretty clear.

~Tom]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7557678 Fri, 01 Aug 2003 03:24:32 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7536195 http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7536195 Tue, 29 Jul 2003 22:46:22 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7527745
I think Cox has introduced something into the Network here in South County that has created an incompatibility with Linksys BEFSRx1 units. I don't know what, but it is causing a what amounts to a loss of connectivity. No errors in the logs, no lights flashing incorrectly, no loss of sync etc....just plain, no internet access for around 30seconds to 1 minute. My Router and my friends router both had the latest firmware revs.

Don't know what it is, but this is something that has been introduced in the last 30 days. I did an advanced exchange with Linksys on my router, but that did not change the problem. Also swapped my Linksys Cable modem (BEFCMU10 V2) with a Motorola (SB5100), no change in problem.

Anyone?

~Tom]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7527745 Tue, 29 Jul 2003 01:54:41 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7513107
I am wondering if Cox has introduced an incompatibility in their network in regards to Linksys Routers here in Orange County (South)?

I will update here after the swap....

~Tom]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7513107 Sun, 27 Jul 2003 12:31:05 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7495100 said by Smokey:

---

can you post your log sheet. Also some power levels and ping test, and what ever else you may have on this problem. tx

---

SIGNAL
========================
System up time = 0 days 08h 55m 32.00s
Downstream channel ID = 0
Downstream channel frequency = 663000000 Hz
Downstream received signal power = -2.0 dBmV
Upstream channel ID = 6
Upstream channel frequency = 31984000 Hz
Upstream transmit signal power = 51.5 dBmV
QoS max upstream bandwidth = 128000 bps
QoS max downstream bandwidth = 3000000 bps
SigQu: Signal to Noise Ratio = 34.1 dB
SigQu: received without error = 1004779190 codewords
SigQu: correctable errors = 179048 codewords
SigQu: uncorrectable errors = 65 codewords
SigQu: microreflections = 40 dBc
Cable modem status = Operational
Date and Time = 2003-07-25,04:47:19.0
Configuration filename = sb5100.cm

LOG:
====================
unset SYNC Timing Synchronization failure - Failed to acquire FEC framing
unset last event repeated 7 times, up to this date/time

unset SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
unset last event repeated 74 times, up to this date/time

unset No Ranging Response received - T3 time-out
2003-07-24,19:55:25 last event repeated 225 times, up to this date/time

unset DHCP FAILED - Discover sent, no offer received
unset last event repeated 5 times, up to this date/time

unset DHCP WARNING - Non-critical field invalid in response.
2003-07-24,19:55:52 last event repeated 9 times, up to this date/time

2003-07-23,02:41:10 DHCP RENEW WARNING - Field invalid in response

2003-07-23,03:02:33 Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-25,03:59:23 last event repeated 245 times, up to this date/time

2003-07-23,03:02:49 Unicast Ranging Received Abort Response - Re- initializing MAC
2003-07-24,19:55:00 last event repeated 22 times, up to this date/time

2003-07-23,12:21:10 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 timeout
2003-07-24,19:45:21 last event repeated 3 times, up to this date/time

unset No Maintenance Broadcasts for Ranging opportunities received - T2 time-out
unset last event repeated 4 times, up to this date/time
[co-briar-u1-c3a-65:~]

PING:
=============================
Ping has started ...

PING www.google.com (216.239.39.99): 56 data bytes
64 bytes from 216.239.39.99: icmp_seq=0 ttl=51 time=75.902 ms
64 bytes from 216.239.39.99: icmp_seq=1 ttl=51 time=77.755 ms
64 bytes from 216.239.39.99: icmp_seq=2 ttl=51 time=77.284 ms
64 bytes from 216.239.39.99: icmp_seq=3 ttl=51 time=79.504 ms
64 bytes from 216.239.39.99: icmp_seq=4 ttl=51 time=76.701 ms
64 bytes from 216.239.39.99: icmp_seq=5 ttl=51 time=76.399 ms
64 bytes from 216.239.39.99: icmp_seq=6 ttl=51 time=77.666 ms
[snip]
64 bytes from 216.239.39.99: icmp_seq=92 ttl=51 time=77.508 ms
64 bytes from 216.239.39.99: icmp_seq=93 ttl=51 time=76.392 ms
64 bytes from 216.239.39.99: icmp_seq=94 ttl=51 time=77.741 ms
64 bytes from 216.239.39.99: icmp_seq=95 ttl=51 time=76.144 ms
64 bytes from 216.239.39.99: icmp_seq=96 ttl=51 time=77.058 ms
64 bytes from 216.239.39.99: icmp_seq=97 ttl=51 time=81.677 ms
64 bytes from 216.239.39.99: icmp_seq=98 ttl=51 time=77.13 ms
64 bytes from 216.239.39.99: icmp_seq=99 ttl=51 time=77.453 ms

--- www.google.com ping statistics ---
100 packets transmitted, 100 packets received, 0% packet loss
round-trip min/avg/max = 75.676/77.613/87.248 ms]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7495100 Fri, 25 Jul 2003 05:03:35 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7494985 --
Firefighters find them hot and leave them wet! ]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7494985 Fri, 25 Jul 2003 04:08:07 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7494968 CampMaster,

I'm having the exact same sporadic connection drop/recovers, along w/ "T-2, T-3 and T-4 time-outs" in the logs, but on Adelphia PowerLink in Colorado.

In the last three weeks I've had two Linksys BEFCMU10 v2 modems and two Motorola SB5100 modems. All four have exhibited this issue. I'm pretty sure it's not defective modems, though I suppose both modems could be getting misconfigured config files from the CMTS, or both have something in common in their firmware?

You can read about this similar issue in this Adelphia thread: »Linksys BEFCMU10 v2: constant T3 time-outs
And on the Comcast HSI board: »Re: Help me constant disconnection on Motorola SB5

-tom

PS: You guys are lucky to have a Cox Tech (DBB) on your broad, no such luck over on the Adelphia threads (that's why I'm slumming over here ;)).]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7494968 Fri, 25 Jul 2003 03:59:00 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7395523 [text was edited by author 2003-07-14 03:49:52]
]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7395523 Mon, 14 Jul 2003 03:38:11 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7395378 Here is the current logs;

Log
This page provides important information that can be used to resolve problems with your cable modem.

Time Priority Description
2003-07-13 15:44:19 error ToD request sent - No Response received
2003-07-13 11:41:33 warning DHCP RENEW WARNING - Field invalid in response
2003-07-12 21:49:56 error ToD request sent - No Response received
2003-07-12 21:49:51 notice Interface index:4 LinkUp
2003-07-12 21:49:51 notice Interface index:3 LinkUp
2003-07-12 21:49:50 notice Interface index:2 LinkUp
2003-07-12 21:49:50 notice SNMP COLD_START(SNMP Nmaccess mode)
2003-07-12 21:49:50 notice Cable Modem Status set to Registration Complete
2003-07-12 21:49:50 information Received REG-RSP from CMTS
2003-07-12 21:49:50 information Sending Registration Request
2003-07-12 21:49:50 information Processing Configuration File
2003-07-12 21:49:48 information DHCP: IP complete
2003-07-12 21:49:24 debug DHCP_coldstart() successfully
2003-07-12 21:49:22 critical No Ranging Response received -T3 time-out
2003-07-12 21:49:22 critical No Ranging Response received -T3 time-out
2003-07-12 21:49:21 critical No Ranging Response received -T3 time-out
2003-07-12 21:49:21 critical No Ranging Response received -T3 time-out
2003-07-12 21:49:20 critical No Ranging Response received -T3 time-out
2003-07-12 21:49:20 information Beginning ranging process. Initial Power=37.00 dBmV
2003-07-12 21:49:20 information 1058046560: Pre upstream channel ID = 1, next Upstream channel ID = 2
2003-07-12 21:49:20 information Got a map with the new UCD change count, and changed upstream parms
2003-07-12 21:49:20 information 1058046560: Pre upstream channel ID = 1, next Upstream channel ID = 2
2003-07-12 21:49:18 information Sync recovery loop is locked
2003-07-12 21:49:15 information Scan Downstream Frequency...
2003-07-12 15:02:32 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-12 12:17:07 warning DHCP RENEW WARNING - Field invalid in response
2003-07-12 09:49:06 error ToD request sent - No Response received
2003-07-12 05:51:30 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-12 00:16:59 warning DHCP RENEW WARNING - Field invalid in response
2003-07-11 22:54:56 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-11 21:48:52 error ToD request sent - No Response received
2003-07-11 12:16:49 warning DHCP RENEW WARNING - Field invalid in response
2003-07-11 11:48:40 error ToD request sent - No Response received
2003-07-11 09:48:32 error ToD request sent - No Response received
2003-07-11 04:12:18 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-11 00:16:40 warning DHCP RENEW WARNING - Field invalid in response
2003-07-10 19:55:58 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-10 19:12:58 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-10 14:03:57 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-10 12:51:26 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-10 12:16:30 warning DHCP RENEW WARNING - Field invalid in response
2003-07-10 00:15:39 warning DHCP RENEW WARNING - Field invalid in response
2003-07-09 19:48:13 error ToD request sent - No Response received
2003-07-09 19:32:02 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-09 15:13:45 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-09 15:13:00 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-09 15:13:00 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-09 15:12:59 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-09 05:55:03 error ToD request sent - No Response received
2003-07-09 05:54:58 notice Interface index:4 LinkUp
]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7395378 Mon, 14 Jul 2003 02:44:50 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7374069 http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7374069 Fri, 11 Jul 2003 14:56:32 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7371711
Ben.]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7371711 Fri, 11 Jul 2003 10:33:01 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7366953 http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7366953 Thu, 10 Jul 2003 20:20:08 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7364462 [text was edited by author 2003-07-10 16:10:32]
]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7364462 Thu, 10 Jul 2003 16:08:52 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7364460 http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7364460 Thu, 10 Jul 2003 16:08:29 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7362470
Also, let me guess, disconnect or long pauses (hiccups) when using the net (ah, T3-timeouts)? Btw, if your looking into a modem, I would suggest a Motorola (SB4200, or 5200). Seems to be less prone to that sort of stuff, plus its just an all-around workhorse.]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7362470 Thu, 10 Jul 2003 12:46:58 EDT http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7362223
Second, you might want to edit out your cable modem's MAC address in your post...

Since it appears to be a Linksys cable modem, based on the software version, you might look and see if there is a firmware upgrade available to end users on the Linksys site.
--
root@localhost# cat /var/log/messages]]> http://www.dslreports.com/forum/Re-Cable-modem-or-Connection-7362223 Thu, 10 Jul 2003 12:16:19 EDT http://www.dslreports.com/forum/Cable-modem-or-Connection-7362152 Here is the errors I see;
2003-07-10 00:15:39 warning DHCP RENEW WARNING - Field invalid in response
2003-07-09 19:48:13 error ToD request sent - No Response received
2003-07-09 19:32:02 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-09 15:13:45 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-09 15:13:00 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-09 15:13:00 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-09 15:12:59 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2003-07-09 05:55:03 error ToD request sent - No Response received

my config is
Standard Specification Compliant DOCSIS 1.0
Hardware Version 4.0
Software Version 1.0.6 b111c (befcmu10v2_109-0927.bin)
Cable Modem MAC Address xx:xx:xx:xx:xx:xx
Cable Modem Serial Number KBG2504104
CPE-end Interface Ethernet + USB
CM certificate Certificate Installed.

and ;

Any ideas? Is this the modem? Do I need the firmware flashed? Is it my connection? This is not new and has been going on for a while. My connection is fine and speeds are good?

Thanks for your help!
Tom
[text was edited by author 2003-07-10 13:17:29]

[text was edited by author 2003-07-10 13:23:17]

]]> http://www.dslreports.com/forum/Cable-modem-or-Connection-7362152 Thu, 10 Jul 2003 12:06:39 EDT