Agreed - and sometime boxes will drop all IMCP packets if they want to hide. Many default firewall configurations are “drop all” for incoming packets<tinfoilhat> and if I the ISP is running all data through Carnivore then you can bet that Carnivore would not respond to a ping</tinfoilhat>. What you need to be looking at is the time that it takes to get from start to finish. But the original questions was “Is Cox internet service slow in evenings?” - not in my experience although I’d guess that the networks is more heavily loaded in the evenings these days even though they claim that the reason that they charge businesses much more than home users for the same bandwidth is because a business uses more bandwidth. I don’t think that’s true anymore. Edmund Cramp -- You can’t have great software without a great team, and most software teams behave like dysfunctional families. - Jim McCarthy From: General [mailto:[email protected]] On Behalf Of Keith Stokes Sent: Thursday, September 12, 2013 2:40 PM To: [email protected] Subject: Re: [brlug-general] Cox internet service slow in evenings? Dropping packets at a particular device really isn't a good measure of performance. Many providers limit the total number, the response rate or the overhead for ICMP packets at points along their network. On Sep 12, 2013, at 2:38 PM, Brad Bendily wrote:
Ok. http://70.177.34.235:8497/smokeping/ I would be somewhat understanding of a few dropped packets to google and other sites. But what irks me the the most is the dropped packets to internal Cox services. Those should never happen to me as a Cox customer. Check out the cox.com and the three 68.x.x.x addresses. Those are Cox DNS servers. If your DNS servers are dropping packets, what kind of end user experience is the end user having? bb On Thu, Sep 12, 2013 at 2:25 PM, Edmund Cramp <[email protected]> wrote: Why not post them here and let the folks on the list take a look at them? Interestingly enough I fired up pingplotter today and it seems that both AT&T and COX appear to drop a lot of packets around Baton Rouge. What was most interesting was that tracing to places like the google DNS servers resulted in a lot more hops with AT&T than with COX. <image002.png> <image003.png> From: General [mailto:[email protected]] On Behalf Of Brad Bendily Sent: Wednesday, September 11, 2013 12:51 PM To: [email protected] Subject: Re: [brlug-general] Cox internet service slow in evenings? I've been running smokeping and have some graphs too. but, i haven't been able to talk to someone who knows what to do with that information. On Wed, Sep 11, 2013 at 10:39 AM, Edmund Cramp <[email protected]> wrote: My general impression with the support folks is that you have to nail the problem to their heads before they will look at it. This means that you have to do the diagnostic and evidence collection and then present them with the problem in a way that they can’t easily dismiss it - remember it’s “their” network and they think that they know all about it even though they rarely bother to look at it. Start with tracert and document the response times over a week or so for all of the nodes - that will give you a good idea where they need to start looking. <image001.png> In my case the firewall generates all the data I need - above you can see that the link (COX) went down briefly last Thursday morning and that I had a lot of traffic yesterday. Otherwise it’s been solid - now if you can generate something similar and show it to the COX tech - and explain it to them - then they may start to look at the problem. You have to remember that close to 100% of the complaints that they have to deal with daily are luser errors and that they will start by assuming that you can’t drive your equipment . Don’t take it personally - most of the time they are right. Regards, Edmund Cramp -- Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are–by definition–not smart enough to debug it. - Brian Kernighan From: General [mailto:[email protected]] On Behalf Of Brad Bendily Sent: Wednesday, September 11, 2013 9:47 AM To: [email protected] Subject: Re: [brlug-general] Cox internet service slow in evenings? The main problem I have isn't the high latency, i could deal with that, it's the dropped packets/pings. To me, that shouldn't happen, often. On Wed, Sep 11, 2013 at 7:34 AM, Edmund Cramp <[email protected]> wrote: For what it’s worth these are my ping times to 8.8.8.8 and 8.8.4.4 :- COX work 27ms, Cox home 25ms ATT work 70ms, ATT home 29ms These are measured via the routing monitor in the pfSense firewalls. Edmund Cramp -- There are only two kinds of programming languages: those people always bitch about and those nobody uses. - Bjarne Stroustrup From: General [mailto:[email protected]] On Behalf Of Brad Bendily Sent: Tuesday, September 10, 2013 9:56 PM To: [email protected] Subject: Re: [brlug-general] Cox internet service slow in evenings? Actually, back in February, i replaced an old DOCSIS2.0 Linksys modem with a CiscoDPC3010. And then in about april started noticing these issues. Had a tech come out around June. He checked the signals and they were all good, he replaced the modem any way, with a Cisco DPC3825, but the issues remain. I've noticed a marginal improvement since I called a few weeks ago and someone was supposed to check the neighborhood lines. I don't know if that actually happened or not. But i'll keep monitoring. bb On Tue, Sep 10, 2013 at 3:07 PM, Edmund Cramp <[email protected]> wrote: I had a bitch at COX a while back over dropouts and signal latency and they came out and replaced the Motorola Surfboard modem with a Cisco DPC3010 … that just about halved the latency and virtually eliminated the service drops that I was having at work. But the number one cause of large latencies is traffic - if you have a lot of traffic in the pipe (in or out) then the packet latency is going to rise. I’d measure the traffic in the pipe and see if there’s not some other source of traffic on the connection. I’ve recently moved to using both COX and AT&T in an effort to improve connection reliability and it’s working very nicely to date - I feed the two WAN connections into the firewall and the LAN uses them both giving me almost 12Mbs at home with a pair of 6Mb connections from COX and AT&T DSL. Edmund Cramp -- The question of whether computers can think is like the question of whether submarines can swim. - Edsger W. Dijkstra From: General [mailto:[email protected]] On Behalf Of Terry Stockdale Sent: Friday, August 30, 2013 7:07 AM To: [email protected] Subject: Re: [brlug-general] Cox internet service slow in evenings? Also take a look at your router. When my old router went flaky (which I eventually figured out), http was slow while email worked fine. Eventually, web browsers could never get the full page. Pulling the plug on the router, waiting 15 seconds, and then reinserting the plug solved it -- but two weeks later, same problem. Then 2 days, then 2 hours... Fortunately, I had a new one on order from Amazon by the time it got that bad. -- Terry Stockdale -- Baton Rouge, LA My computer tips site and newsletters: http://www.TerrysComputerTips.com On 8/30/2013 12:06 AM, Karthik Poobalasubramanian wrote: Not really. My ping times to quakelive servers got higher than usual but not by much. Cox techs, at least the ones who came out to my place, were mostly incompetent. In all their tests, the "signals" were good but my modem would disconnect every few hours or so. The modem will be back online within minutes. Won't notice that while browsing but when you on a video calls, you will. I changed my cable modem twice but that did not resolve it. I went ahead and changed the coax from the drop outside to my house to the attic distribution box and change out cable from the distribution box to the cable modem. And that fixed the issue. I don't want to move to another ISP, but if it comes down to it, i will. haha... Like you have a real choice. Unless you wan to go commercial, you only other choice is ATT and they suck too. Find out if your modem's S/N ratio is in the acceptable range and if you have the latest firmware. If you call cox tech and if you are lucky, you will get someone who will know the answer to this. I think for Cisco Modems you can access the power and S/N at http://192.168.100.1. Here's my Modem's Power and S/N ratio: http://db.tt/GBAjlze3 Here are some of my speed test results: Cox plan speed: 50 Mbps down/ 10 Mbps up speedtest.net Results To LUS: 64.27 Mbps Down/ 21.10 Mbps up Ping: 24ms http://www.speedtest.net/result/2933064237.png To Cox NO: 65.41 Mbps Down/ 21.20 Mbps up Ping: 20ms http://www.speedtest.net/result/2933065765.png To UT Houston: 54.45 Mbps Down/ 23.63 Mbps up Ping: 29ms http://www.speedtest.net/result/2933067305.png nuttcp network test to my desktop at work. The desktop is on LONI with 100 Mbps to commodity. poobal@daedalus:~$ sudo nuttcp -r -il -p 8760 -P 8759 bhope 2.1875 MB / 1.00 sec = 18.3442 Mbps 0 retrans 6.6250 MB / 1.00 sec = 55.5860 Mbps 0 retrans 7.6875 MB / 1.00 sec = 64.4885 Mbps 0 retrans 7.4375 MB / 1.00 sec = 62.3913 Mbps 0 retrans 7.6875 MB / 1.00 sec = 64.4865 Mbps 0 retrans 7.6250 MB / 1.00 sec = 63.9410 Mbps 0 retrans 7.7500 MB / 1.00 sec = 65.0234 Mbps 0 retrans 7.6875 MB / 1.00 sec = 64.4954 Mbps 0 retrans 7.7500 MB / 1.00 sec = 65.0168 Mbps 0 retrans 7.6875 MB / 1.00 sec = 64.4800 Mbps 0 retrans 71.7388 MB / 10.24 sec = 58.7872 Mbps 0 %TX 17 %RX 0 retrans 29.97 msRTT poobal@daedalus:~$ sudo nuttcp -t -il -p 8760 -P 8759 bhope 1.5625 MB / 1.00 sec = 13.1070 Mbps 0 retrans 3.6875 MB / 1.00 sec = 30.9329 Mbps 0 retrans 1.3125 MB / 1.00 sec = 11.0101 Mbps 0 retrans 1.2500 MB / 1.00 sec = 10.4857 Mbps 0 retrans 1.2500 MB / 1.00 sec = 10.4858 Mbps 0 retrans 1.2500 MB / 1.00 sec = 10.4858 Mbps 0 retrans 1.2500 MB / 1.00 sec = 10.4854 Mbps 0 retrans 1.2500 MB / 1.00 sec = 10.4859 Mbps 0 retrans 1.2500 MB / 1.00 sec = 10.4857 Mbps 0 retrans 1.2500 MB / 1.00 sec = 10.4860 Mbps 0 retrans 15.9375 MB / 10.52 sec = 12.7116 Mbps 0 %TX 4 %RX 0 retrans 30.67 msRTT On Thu, Aug 29, 2013 at 10:00 PM, Brad Bendily <[email protected]> wrote: Does anyone else have cox internet and notice much slower speed and reliability in the evenings? I've been running smokeping for a few weeks and every evening, about 7-11 speed and latency is very sporadic. I'm not 100% how long this has been a problem but back in april/may I started a new project where I have been working from home more and need to use a VPN to connect to another network. Actually, two different VPNs on two different networks. One, is Dell Sonicwall and the other is a Cisco. The Cisco, is surprisingly very stable and even though the network is flakey the Cisco stays connected. But the Sonicwall is very sensitive to the network outages. Any time the network glitches the Sonicwall disconnects and all my SSH connections drop. Now I RDP to a server on the network and run the SSH sessions from there. So I don't lose everything. But, this brings me back to Cox's evening service. A tech came out about a month ago and checked my signals which were all in the good range, he even replaced the cable modem on good faith. Even though the one I had was only a few months old.I replaced a much older linksys docsis2, with the Cisco docsis3 modem. So, the tech replaced my modem with mostly the same model modem, but still the signals are good. Normally, running a speed test on speedtest.net, i get around 30Mbps down, 15Mbps up. Just now, i got .75Mbps down, and 4Mbps up. My smokeping is hitting 3 Cox DNS servers and one of their web servers and a handful of other high profile servers. As well as two of my own personal, which have no traffic and should be no lag what so ever. Yet smokeping shows dropped packets and higher latency. I've called a few more times to try to explain the problem again. Monday i called and the guy said they will send someone to check from the house out. Last night I called and the person wanted to schedule a tech to come to the house again. I asked for level 2 support and was put on hold for an hour. I eventually hung up. If I were just web surfing, i would probably have never noticed and probably wouldn't care, but now that i'm using the VPN a lot it would be nice to have stable service in the evenings. has anyone else run into this and have any suggestions about how I can get to the bottom of it with cox? I don't want to move to another ISP, but if it comes down to it, i will. thoughts? suggestions? bullshit remarks from jarred? -- Have Mercy & Say Yeah _______________________________________________ General mailing list [email protected] http://brlug.net/mailman/listinfo/general_brlug.net _______________________________________________ General mailing list [email protected] http://brlug.net/mailman/listinfo/general_brlug.net -- Have Mercy & Say Yeah _______________________________________________ General mailing list [email protected] http://brlug.net/mailman/listinfo/general_brlug.net -- Have Mercy & Say Yeah _______________________________________________ General mailing list [email protected] http://brlug.net/mailman/listinfo/general_brlug.net -- Have Mercy & Say Yeah _______________________________________________ General mailing list [email protected] http://brlug.net/mailman/listinfo/general_brlug.net -- Have Mercy & Say Yeah _______________________________________________ General mailing list [email protected] http://brlug.net/mailman/listinfo/general_brlug.net --- Keith Stokes
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