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README.md
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README.md
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CeroWrtScripts
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OpenWrtScripts
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==============
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The CeroWrt router firmware project has largely eliminated the problem of *bufferbloat* on Ethernet for home routers.
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This firmware makes a huge difference for wireless, too, although there's still more work to be done.
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The symptoms of bufferbloat give people cause to complain, "the Internet feels slow today."
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The techniques that the CeroWrt team have proved out are being widely adopted across
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the Internet to make everyone's network performance better.
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This is a set of scripts (sometimes also called "Openscripts") that configure and measure (and improve) latency in home routers (and everywhere else!) These scripts include:
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This is a set of scripts (sometimes also called "Ceroscripts") that we use to measure (and improve) latency in home routers (and everywhere else!)
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[http://bufferbloat.net/projects/cerowrt](http://bufferbloat.net/projects/cerowrt)
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These scripts include:
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* Script to configure the OpenWrt router consistently after flashing factory firmware.
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* Scripts that measure the performance of your router or offer load to the network for testing.
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* Script to configure the CeroWrt router consistently after flashing factory firmware.
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* Script to set up a IPv6 6-in-4 tunnel to TunnelBroker.net.
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* Script to collect troubleshooting information that helps us diagnose problems in the CeroWrt distribution.
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* Script to collect troubleshooting information that helps us diagnose problems in the OpenWrt distribution.
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These scripts are bundled into CeroWrt 3.10.44-3 and newer as the 'cerowrtscripts' package, saved in the `/usr/lib/CeroWrtScripts` directory.
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To get the newest versions, you can use `opkg update; opkg upgrade`
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If the scripts are not built into your version of CeroWrt, it is safe to put them in that CeroWrtScripts directory.
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These scripts can be saved in the `/usr/lib/OpenWrtScripts` directory. They were cloned from the similar CeroWrtScripts at https://github.com/richb-hanover/CeroWrtScripts
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---
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## betterspeedtest.sh
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@ -53,7 +42,7 @@ On the right is a test using SQM: the latency goes up a little (less than 23 mse
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Example with NO SQM - BAD Example using SQM - GOOD
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root@cerowrt:/usr/lib/CeroWrtScripts# sh betterspeedtest.sh root@cerowrt:/usr/lib/CeroWrtScripts# sh betterspeedtest.sh
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root@openwrt:/usr/lib/OpenWrtScripts# sh betterspeedtest.sh root@openwrt:/usr/lib/OpenWrtScripts# sh betterspeedtest.sh
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[date/time] Testing against netperf.bufferbloat.net (ipv4) [date/time] Testing against netperf.bufferbloat.net (ipv4)
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with 5 simultaneous sessions while pinging gstatic.com with 5 simultaneous sessions while pinging gstatic.com
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(60 seconds in each direction) (60 seconds in each direction)
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@ -103,7 +92,7 @@ and netperf-eu (Denmark)
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The output of the script looks like this:
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root@cerowrt:/usr/lib/CeroWrtScripts# sh netperfrunner.sh
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root@openwrt:/usr/lib/OpenWrtScripts# sh netperfrunner.sh
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[date/time] Testing netperf.bufferbloat.net (ipv4) with 4 streams down and up
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while pinging gstatic.com. Takes about 60 seconds.
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Download: 5.02 Mbps
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@ -124,9 +113,9 @@ The output of the script looks like this:
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This script continually invokes the netperfrunner script to provide a heavy load. It runs forever - Ctl-C will interrupt it.
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---
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## config-cerowrt.sh
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## config-openwrt.sh
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This script updates the factory settings of CeroWrt to a known-good configuration.
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This script updates the factory settings of OpenWrt to a known-good configuration.
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If you frequently update your firmware, you can use this script to reconfigure
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the router to a consistent state.
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You should make a copy of this script, customize it to your needs,
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@ -136,13 +125,13 @@ This script is designed to configure the settings after an initial "factory" fir
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There are sections below to configure many aspects of your router.
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All the sections are commented out. There are sections for:
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- Set up the ge00/WAN interface to connect to your provider
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- Set up the WAN interface to connect to your provider
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- Update the software packages
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- Update the root password
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- Set the time zone
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- Enable SNMP for traffic monitoring and measurements
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- Enable NetFlow export for traffic analysis
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- Enable mDNS/ZeroConf on the ge00 (WAN) interface
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- Enable mDNS/ZeroConf on the WAN interface
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- Change default IP addresses and subnets for interfaces
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- Change default DNS names
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- Set the SQM (Smart Queue Management) parameters
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@ -163,19 +152,19 @@ may reset the wireless network.
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sh config.sh
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Presto! (You should reboot the router when this completes.)
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**Note:** If you use a secondary CeroWrt router, you can create another copy of this script, and use it to set different configuration parameters (perhaps different subnets, radio channels, SSIDs, enable mDNS, etc).
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**Note:** If you use a secondary OpenWrt router, you can create another copy of this script, and use it to set different configuration parameters (perhaps different subnets, radio channels, SSIDs, enable mDNS, etc).
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---
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## tunnelbroker.sh
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This script configures CeroWrt to create an IPv6 tunnel.
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This script configures OpenWrt to create an IPv6 tunnel.
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It's an easy way to become familiar with IPv6 if your ISP doesn't offer native IPv6 capabilities. There are three steps:
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1. Go to the Hurricane Electric [TunnelBroker.net](http://www.tunnelbroker.net/) site to set up your free account. There are detailed instructions for setting up an account and an IPv6 tunnel at the
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[CeroWrt IPv6 Tunnel page.](http://www.bufferbloat.net/projects/cerowrt/wiki/IPv6_Tunnel)
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[IPv6 Tunnel page.](http://www.bufferbloat.net/projects/cerowrt/wiki/IPv6_Tunnel)
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2. Edit the tunnelbroker.sh script, using the parameters supplied by Tunnelbroker.net. They're on the site's "Tunnel Details" page. Click on the "Example
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Configurations" tab and select "OpenWRT Backfire 10.03.1". Use the info to fill in the corresponding lines of the script.
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3. ssh into the CeroWrt router and execute this script with these steps.
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3. ssh into the OpenWrt router and execute this script with these steps.
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ssh root@172.30.42.1
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cd /tmp
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@ -187,8 +176,8 @@ Configurations" tab and select "OpenWRT Backfire 10.03.1". Use the info to fill
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Presto! Your tunnel is up! Your computer should get a global IPv6 address, and should be able to communicate directly with IPv6 devices on the Internet. To test it, try: `ping6 ivp6.google.com`
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---
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## cerostats.sh
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## openwrtstats.sh
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This script collects a number of useful configuration settings and dynamic values for aid in diagnosing problems with CeroWrt. If you report a problem, it would be helpful to include the output of this script.
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This script collects a number of useful configuration settings and dynamic values for aid in diagnosing problems with OpenWrt. If you report a problem, it would be helpful to include the output of this script.
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By default, it collects information about the first 2.4GHz radio/interface, and writes the collected data to `/tmp/cerostats_output.txt`
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By default, it collects information about the first 2.4GHz radio/interface, and writes the collected data to `/tmp/openstats_output.txt`
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#!/bin/sh
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# Update the factory settings of CeroWrt to a known-good configuration.
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# Update the factory settings of OpenWrt to a known-good configuration.
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# You should make a copy of this script, customize it to your needs,
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# then use the "To run this script" procedure (below).
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#
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@ -56,7 +56,7 @@
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# updating/installing them a second time.
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# opkg update # retrieve updated packages
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# opkg install snmpd fprobe # install snmpd & fprobe
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# opkg install qos-scripts # install the qos-scripts
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# opkg install luci-app-sqm sqm-scripts # install the SQM modules to get fq_codel &c
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# opkg install ppp-mod-pppoe # install PPPoE module
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# === Update root password =====================
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# uncomment six lines.
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#
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# echo 'Updating root password'
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# NEWPASSWD=Beatthebloat
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# NEWPASSWD=enter-your-new-password
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# passwd <<EOF
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# $NEWPASSWD
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# $NEWPASSWD
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# connected directly to the Internet, as it will leak private information.
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# To enable mDNS, uncomment two lines, and reboot the router afterwards
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###
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### IF THIS IS YOUR PRIMARY ROUTER, DO NOT DO THIS! ###
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### IT COULD LEAK YOUR mDNS NAMES INTO THE INTERNET! ###
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### (It's useful if this is your secondary router.) ###
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### IF THIS IS YOUR PRIMARY ROUTER, DO NOT DO THIS! ###
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### IT COULD LEAK YOUR mDNS NAMES INTO THE INTERNET! ###
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### (But it's useful if this is your secondary router.) ###
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###
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# echo 'Enabling mDNS'
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# sed -i s/deny-interfaces=ge00/#deny-interfaces=ge00/g /etc/avahi/avahi-daemon.conf
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#! /bin/sh
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# Netperfrunner.sh - a shell script that runs several netperf commands simultaneously.
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# This mimics the stress test of netperf-wrapper from Toke <toke@toke.dk>
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# but doesn't have the nice GUI result. This can live in /usr/lib/sqm within CeroWrt
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# but doesn't have the nice GUI result. This can live in /usr/lib/OpenWrtScripts
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#
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# When you start this script, it concurrently uploads and downloads multiple
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# streams (files) to a server on the Internet. This places a heavy load
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#
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# - phy0 - 2.4GHz radio
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# - sw00 - First 2.4GHz wireless interface
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# - /tmp/cerostats_output.txt - output file for stats
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# - /tmp/openwrtstats_output.txt - output file for stats
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radio=phy0
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wlan_if=sw00
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out_fqn=/tmp/cerostats_output.txt
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out_fqn=/tmp/openwrtstats_output.txt
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echo -e "[date]" > ${out_fqn}
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date >> ${out_fqn}
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#!/bin/sh
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# Script for setting CeroWrt to create an IPv6 tunnel
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# Script for setting OpenWrt to create an IPv6 tunnel
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# to Hurricane Electric at http://www.tunnelbroker.net/
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# There are two steps:
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# 1) Go to the Tunnelbroker.net site to set up your free account
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