Greetings!
EDIT: Update - 2015-01-12 (2:00 PM EST)
I spoke with an engineer at Arris regarding the issue. While it's been acknowledged that this is a problem, as of this time, I'm the only one who has reported the issue to them. My case is still open, but does not have much priority for being fixed at the moment. Some of you have commented about having similar issues - if this is the case, please take a look below and respond with your ping times, or, better yet, do that and call Arris support directly to open a case describing the problem.
As of this time, we know that the problem exists on the specific chipset used in both the SB6190 and DG2470 modem line. Anyone submitting results from either modem would be a great help. Beyond that, if this problem exists with other DOCSIS 3.0 modems, that would be great to know as well.
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This is a request for assistance (or, more specifically, for output of a quick ping command). I'd like to compare results from my modems to others. Some additional details are at the tail-end of this post, but here's my request: I'd like to ask this of those of you who have either Arris model DG2470(A), or SB6190 to execute a 10-second ping against your modem from a hard-wired device (no wireless please) and report the results in a comment below.
To keep results similar, I'd ask that anyone willing to offer results use the following command, based on your OS:
For Windows-based machines:
batchping -n 10 192.168.100.1
... and, for *nix-based machines (including Mac, Linux, etc.):
bashping -c 100 -i 0.1 192.168.100.1
If you participate, please include the output of the ping command, as well as the model of modem, and firmware version if you can locate it (typically found somewhere through http://192.168.100.1/).
Note, the IP address of 192.168.100.1 is the management IP of your modem in bridged mode. I believe it works in NAT mode, so if someone with a DG2470 in NAT mode could confirm that would be awesome.
------------------------------- Details below ------------------------------
I've been working on an issue for a few weeks now that began when I upgraded to a higher speed with my ISP, which required me to upgrade modems to support the faster speed. There are a couple of posts under my name here if you care to look up the details, but I won't belabor the point. I'll just state the following:
The ping spikes / latency issues:
Occur on at least two hardware models; DG2470, and SB6190.
---> The DG2470 is owned by the ISP. The SB6190 I own (purchased new).
Present regardless of whether the modem is in bridged or NAT mode, for modems which support it.
Exists whether the coaxial cable is connected or not.
Exists across multiple ISPs (another user on this forum provided diagnostic data from his modem).
Extend into real-world connections, and are most evident in latency-sensitive applications (such as VoIP, online gaming, etc.)
For at least the SB6190, occur with the latest firmware available to me (9.1.93K).
As a quick point of clarification, the "issue" is both ping spikes, as well as a much higher-than-expected latency (direct connection pings should be sub-1ms, not 5ms - 10ms).
I also own a number of other cable modems, such as the SB6120 and SB6121, which do not exhibit these problems.
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