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A collection of 7 posts

ntp

DOCSIS 3.1 and NTP

Spectrum upgraded my area to DOCSIS 3.1 to offer 1G/40M service. I believe they have it configured for 1.7Gbit shared downstream (using DOCSIS 3.1) and ~100Mbit shared upstream (sharing

  • Dan Drown
2 min read
twc

SB6183 dropping IPv6 traffic

TL;DR - The Arris SB6183 cable modem is dropping IPv6 TCP traffic with the timestamp TCP option. See the "Workarounds" section for possible workarounds. 13 months later (October 2016), my modem was

  • Dan Drown
5 min read
router

SB6183 vs DG1670A latency

See also: SB6183 dropping IPv6 traffic [https://blog.dan.drown.org/sb6183-dropping-ipv6-traffic/] Comparing latency in cable modems: SB6183 (16 channel DOCSIS 3 modem only) vs DG1670A (16 channel DOCSIS 3 modem+router combo,

  • Dan Drown
1 min read
twc

Time Warner 300/20 service

Before (50M/5M) After (300M/20M) Other notes DG1670A Firmware Version was updated from 8.0.89 to 8.0.120. SW_REV: 8.0.120.SIP.PC20.TW IPv6 $ iperf -f m

  • Dan Drown
2 min read
router

New Time Warner router: Arris DG1670A

See also: Comparison of the Arris SB6183 vs Arris DG1670A [https://blog.dan.drown.org/sb6183-vs-dg1670a-latency/], and SB6183 dropping IPv6 traffic [https://blog.dan.drown.org/sb6183-dropping-ipv6-traffic/] As part of TWC's upgraded speeds

  • Dan Drown
3 min read
arm

ARM router forwarding rates

The goal for this project is 300mbit/s forwarding with full size packets and nat enabled. There's problems with this hardware: see "Problems" section below. test setup Router hardware: Utilite Standard [http://utilite-computer.

  • Dan Drown
3 min read
arm

ARM-based router

This hardware has problems - see the Problems section [https://blog.dan.drown.org/arm-router-forwarding-rates/] on the follow-up page. I have an arm system with two gige ports that I want to turn

  • Dan Drown
1 min read
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