Renesys has spent some time analyzing Sandy’s impact on the routing table Monday night. They made an animation which shows routes being removed during the storm.

From the article:

Here’s another quick view of the impact on the routing table as Sandy came ashore Monday night. Each square represents the fate of a set of networks geolocated within a common tenth-degree square of the Earth’s surface — at these latitudes, that’s about 90 square kilometers.

At one end of the scale, the darkest green indicates better than 99.95% of the networks are available. At the other end, solid red indicates that more than 5% of the networks at that location have been removed from the global routing table, meaning that they can’t be reached by anyone.

Five percent doesn’t sound like much, but consider the Internet density in the affected areas! In fact, Manhattan’s outage rates were much higher — on the order of 10%, which is impressively low given the fact that ConEd cut power to much of the island. Silencing ten percent of the networks in the New York area is like taking out an entire country the size of Austria, in terms of impact on the global routing table. The 90% that survive are in data centers, running on generator power supplied by engineers who do not sleep much.

It’s striking to observe not only the impacts in NYC, Long Island, and New Jersey, but also peripheral weather-related outages in the Washington DC area, and up the I-93 corridor from Boston into New Hampshire. The Internet has become a sensor network in its own right for determining where storm damage is occurring — and since BGP routing converges in realtime, that information literally becomes available within a few seconds.

Source

 

If the video doesn’t show up, refresh the page.

 

Show is over folks.

Oct 24, Wednesday

Time Agenda
08:00 Check-in and Exhibitor hall opens. Bring your printed tickets!
09:00 Opening and Introduction, New Products, MikroTik Academy Project and RouterOS v6 by Sergejs Boginskis (MikroTik, Latvia)
09:30 Centralised Router Configuration using routerOS API and PHP by Mike Everest (Duxtel, Australia)
10:15 AFC 2012 by Jaromir Cihak (SysDataCom s.r.o., Czech Republic)
10:45 Securing your Mikrotik network by Andrew Thrift (New Zealand)
11:30 Scripting for fun and $profit by Andrew Cox (Australia)
12:00 Advanced MikroTik Monitoring via API by Herry Darmawan (Spectrum, Indonesia)
12:30 Lunch time
13:30 A mobile media delivery platform using RouterBoard and OpenWRT by Richard Dupe (Caps Connect, Australia)
14:15 Modifying for Passive PoE by Patrick Sayer (Oghma Pty Ltd , Australia)
14:30 High availability routing appliance for VoIP services with 3G/4G fail-over by Roy Adams (RACS Pty Ltd, Australia)
15:15 MetaRouter by Philip Dohna (MikroTik Certified Trainer, Australia)
15:45 Mikrotik RouterOS and hardware with the NBN in Australia by Andrew McLennan (Network Presence, Australia)
16:30 IPv6 by Craig O’Toole (Remex Consulting Pty Limited, Australia)
17:00 IPv6 Workshop by Arash Naderpour (Australia)
17:30 Raffle and closing of MUM, Happy Hour sponsored by Duxtel (http://shop.duxtel.com.au/)

From Slashdot:

MrSeb writes“A team of researchers from MIT, Caltech, Harvard, and other universities in Europe, have devised a way of boosting the performance of wireless networks by up to 10 times — without increasing transmission power, adding more base stations, or using more wireless spectrum. The researchers’ creation, coded TCP, is a novel way of transmitting data so that lost packets don’t result in higher latency or re-sent data. With coded TCP, blocks of packets are clumped together and then transformed into algebraic equations (PDF) that describe the packets. If part of the message is lost, the receiver can solve the equation to derive the missing data. The process of solving the equations is simple and linear, meaning it doesn’t require much processing on behalf of the router/smartphone/laptop. In testing, the coded TCP resulted in some dramatic improvements. MIT found that campus WiFi (2% packet loss) jumped from 1Mbps to 16Mbps. On a fast-moving train (5% packet loss), the connection speed jumped from 0.5Mbps to 13.5Mbps. Moving forward, coded TCP is expected to have huge repercussions on the performance of LTE and WiFi networks — and the technology has already been commercially licensed to several hardware makers.”

Link

iOS: Recommended settings for Wi-Fi routers and access points

The following Wi-Fi base station (or Wi-Fi router) settings are recommended for all iPhone, iPad, and iPod touch devices. These settings will help ensure maximum performance, security, and reliability when using Wi-Fi.

http://support.apple.com/kb/HT4199

AirPort and Bluetooth: Potential sources of wireless interference

Interference may result in:
  • A decrease in wireless range between devices.
  • A decrease in data throughput over a Wi-Fi network.
  • Intermittent or complete loss of connection.
  • Difficulty during the discovery phase when pairing Bluetooth devices.

http://support.apple.com/kb/HT1365

iOS: Troubleshooting Wi-Fi networks and connections

Symptoms

When using a Wi-Fi network with your iPhone, iPad, or iPod touch, you may occasionally encounter the following issues:

  • Unable to locate or join a nearby Wi-Fi network
  • Weak or low Wi-Fi signal strength
  • Connected to Wi-Fi network, but unable to access the Internet

http://support.apple.com/kb/TS1398

http://ask.slashdot.org/story/12/10/21/1335208/ask-slashdot-why-does-wireless-gear-degrade-over-time

Lots of good comments here. I think those cheap radios burn out over time. Has little to do with the increase of the noise floor over time.

*) route - fix dst-prefix filtering did not return routes when routes with
    different routing-mark were present;
*) wireless - improved nv2 stability;
*) winbox & webfig - added simple new version downloading & upgrading panel;
*) dhcp server - immediately store to disk changes for lease configuration;
*) lcd - improve graphs screen
*) lcd - improve touch screen (must /lcd reset-calibration)
*) smb - fix smb share mounting on linux systems
*) ovpn - fixed memory leak on disconnects;
*) userman - fix unpaid profile activation while authenticating;
*) sstp - fix high CPU usage on SSL handshake;
*) winbox - added ability to add time & date to dashboard;
*) metarouter - fixed lockups on RB110AH;
*) metarouter - fixed occasional lockups on RB450G;
*) ups - fixed problem connecting to USB device, introduced in 5.20;
*) quickset - added Wireless PTP Bridge mode;
*) fix MPLS MTU configuration usage;
*) dns - fix empty response;
Download

SNL Tech Talk

“You ask to go to Starbucks but it take you to dunkin donut!”

In case you were too busy chatting up people and missed some of the presentations, or you just weren’t there here are the MUM 2012 NOLA videos.

Video from MUM 2012 NOLA

By Mikrotik Xperts

When looking for a syntax highlighting solution for WordPress I asked a few people. I also did the Google thing and searched. I came across a plugin that looked promising called SyntaxHighlighter Evolved by Alex. It uses the SyntaxHighlighter JavaScript package by Alex Gorbatchev . It’s what WordPress uses in their hosted solution.

Anyways, it supports brushes which allow you to extend the highlighting to additional languages. Someone had already made a Brush for RouterOS for the JavaScript package, but in order to use it it with the WordPress plugin it had to be packed into it’s own plugin which I’ve done.  I improved the brush by adding more keywords from the Notepad++ syntax highlighter from the Mikrotik forums and Andrew’s blog.

I still need to test all the keywords, and add custom highlights that match WinBox coloring.

Here it is:

syntaxhighlighter-routeros 1.0.0

  1. Install SyntaxHighlighter Evolved.
  2. Install this plugin.
  3. Use [ros] and [/ros] around your code.