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Rakeesh

join:2011-10-30
Mesa, AZ
Reviews:
·Sprint Mobile Br..
·Cox HSI

[AZ] Unreliable HSI service today

I've had numerous periods today of complete loss of internet connectivity here in east Mesa, lasting anywhere between a few seconds and a few minutes. Is anybody else noticing the same thing? I've checked my network equipment and nothing appears to be wrong.

Rakeesh

join:2011-10-30
Mesa, AZ
Reviews:
·Sprint Mobile Br..
·Cox HSI
Still going on today, getting occasional complete loss of connectivity for up to two minutes at a time.

Going to give cox a call, something tells me that it will be fruitless (I've never had any luck getting intermittent connectivity issues resolved with them before,) but why not.


Kixur413

@cox.net
reply to Rakeesh
Yeah, we called and they said there was issues but nothing specific. Gilbert, AZ

Rakeesh

join:2011-10-30
Mesa, AZ
Reviews:
·Sprint Mobile Br..
·Cox HSI
I called them and they said they couldn't find anything wrong. They offered to send a tech out, but I don't want to risk them billing me when they don't find anything wrong (with my luck, nothing will happen while they are here.)

I'm running a performance monitor (egress, ingress, ram, CPU) on my router and everything is just fine during these outages (except of course for 100% packet loss.)

g33kd0m

join:2009-07-02
Surprise, AZ
reply to Rakeesh
Ok, well something must be going on.... I am in Surprise, AZ and my connection for the last few days has been very inconsistent. With a wired connection to my Netgear WNDR4500, I am getting ping times over 600ms on Cox's speed test site... Signal levels on my cable modem look ok...

Downstream Bonding Channel Value
Channel ID 203 201 202 204
Frequency 855000000 Hz 843000000 Hz 849000000 Hz 861000000 Hz
Signal to Noise Ratio 37 dB 37 dB 37 dB 37 dB
Downstream Modulation QAM256 QAM256 QAM256 QAM256
Power Level
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
4 dBmV 4 dBmV 4 dBmV 3 dBmV
Upstream Bonding Channel Value
Channel ID 1
Frequency 36100000 Hz
Ranging Service ID 441
Symbol Rate 5.120 Msym/sec
Power Level 47 dBmV
Upstream Modulation [3] QPSK
[3] 64QAM

Ranging Status Success
Signal Stats (Codewords) Bonding Channel Value
Channel ID 203 201 202 204
Total Unerrored Codewords 4007183364 4007207934 4007203654 4007193623
Total Correctable Codewords 34 1076 34 22
Total Uncorrectable Codewords 10220 15054 10241 9871

Rakeesh

join:2011-10-30
Mesa, AZ
Reviews:
·Sprint Mobile Br..
·Cox HSI
reply to Rakeesh
Here's a dstat log of my most recent outage:


This is just monitoring vlan2 (the vlan for the WAN port.) Everything remains normal except for ingress traffic just drops out entirely for up to two minutes, in this case 27 seconds. CPU is mostly idle, no heavy disk activity, etc. This tells me that the problem is almost certainly ISP side.

Rakeesh

join:2011-10-30
Mesa, AZ
Reviews:
·Sprint Mobile Br..
·Cox HSI

1 edit
reply to Rakeesh
Just occurred to me to test the cable modem by issuing constant echo requests, found a somewhat interesting result.

Side by side ping and dstat logs:


It's possible the cable modem is at fault, but if other people are experiencing the same problem...hmm. Already been through the regular power cycling and reset with all of my equipment, including the cable modem.

This is a Cisco DPC3000 modem. What modem are you guys using?

Rakeesh

join:2011-10-30
Mesa, AZ
Reviews:
·Sprint Mobile Br..
·Cox HSI

1 edit
reply to Rakeesh
Cable modem diagnostic page doesn't yield anything useful. Logging in with admin/W2402 isn't useful either (just allows for a non-functioning speedtest page.)


g33kd0m

join:2009-07-02
Surprise, AZ
reply to Rakeesh
I am using a Motorola SB6120. And I have been doing a bunch of speed tests via Cox and these are some of my results...

Wed Jan 09 07:22 PM Yes 1 Mbps 0 Mbps 831 millisec 70.190.123.198 Phoenix
Wed Jan 09 07:21 PM Yes 1 Mbps 0 Mbps 813 millisec 70.190.123.198 Phoenix
Wed Jan 09 07:17 PM Yes 1 Mbps 0 Mbps 99 millisec 70.190.123.198 Phoenix
Wed Jan 09 07:13 PM Yes 3 Mbps 0 Mbps 13 millisec 70.190.123.198 Phoenix
Wed Jan 09 07:12 PM Yes 2 Mbps 0 Mbps 27 millisec 70.190.123.198 Phoenix
Wed Jan 09 07:04 PM Yes 1 Mbps 0 Mbps 654 millisec 70.190.123.198 Phoenix
Wed Jan 09 07:02 PM Yes 3 Mbps 0 Mbps 943 millisec 70.190.123.198 Phoenix
Wed Jan 09 07:01 PM Yes 1 Mbps 0 Mbps 744 millisec 70.190.123.198 Phoenix
Wed Jan 09 07:00 PM Yes 1 Mbps 0 Mbps 871 millisec 70.190.123.198 Phoenix
Wed Jan 09 05:57 PM Yes 13 Mbps 0 Mbps 26 millisec 70.190.123.198 Phoenix
Wed Jan 09 05:41 PM Yes 2 Mbps 0 Mbps 32 millisec 70.190.123.198 Phoenix
Wed Jan 09 05:39 PM Yes 1 Mbps 0 Mbps 823 millisec 70.190.123.198 Phoenix
Wed Jan 09 05:38 PM Yes 2 Mbps 0 Mbps 24 millisec 70.190.123.198 Phoenix
Wed Jan 09 05:37 PM Yes 1 Mbps 0 Mbps 193 millisec 70.190.123.198 Phoenix


AnonPhx

@cox.net
reply to Rakeesh
If you're seeing packet loss to the modem and I assume it's a direct connection that you're either having a fault with the Ethernet cord or the modem itself is faulty. Correlation does not imply causation in regards to other people having the same problem. Fastest and cheapest way would be first try a different Ethernet cord, but those aren't prone to fault unless you have a pet that enjoys eating them. Get another modem.

Rakeesh

join:2011-10-30
Mesa, AZ
Reviews:
·Sprint Mobile Br..
·Cox HSI
I already tried replacing the cable with a known good cable yesterday, as well as putting that cable through a tester. (I do networking as a career so I have a bunch of tools.)

The modem I have is somewhat flaky. Ever since I bought it (2 years ago?) the internal web server stops working after so long of uptime until you power cycle it. Other than that, it has always worked fine.

Anyways I've had dstat running nonstop, and I've only seen one outage since the last one I posted. The problem may have gone away, I'll check it again tomorrow.

fuzzyfuk

join:2001-09-23
Tempe, AZ
I had terrible service yesterday as well. I live in Tempe, around 5th and Mill just west of the train tracks. It appears this morning everything is back to normal.

Rakeesh

join:2011-10-30
Mesa, AZ
reply to Rakeesh
Looks like I haven't seen any more outages (logs running all night long don't show any) whatever it was, it seems fixed now.