kylosmcgraff.com – Page 2 – Mostly random software engineering things I'm looking to share

Wired LAN woes & DD-WRT

Some DD-WRT firmware has a bug that prevents wired devices on your LAN from communicating with one another, this appears to be related to a VLAN configuration.

The fix:
Run this script on router start-up:
swconfig dev eth0 set enable_vlan 1 swconfig dev eth0 set apply

Many thanks to William Reading, I stumbled across this gem and it saved my bacon!

The story
So, you’ve got a nifty DD-WRT router on your home network, but wired devices can’t communicate with one another?

Here are the devices I used while troubleshooting:
* a wired desktop
* a wireless laptop
* a wired NAS
* my phone (on wifi)

The desktop could not ping the NAS, the laptop and phone could ping each other (both on WiFi). The only time I could get the desktop to ping the NAS was when they were plugging directly into one another…but not very helpful for the long term!

The laptop could connect to the NAS…unless it was on a wired connection with the WiFi disabled. This is what finally tipped me off…I’m slow.

Things I tried that did not work (with the help and patience of Google):
* make a static ARP entry (I got an access denied message, just valid IP addresses of wired devices, even when I was an administrator)
* using Wireshark to hopefully find useful nuggets (while pinging, I saw that my ARP broadcasts were not getting a response)
* Resetting Winsock via netsh (no dice)
* Resetting my router to factory defaults (no dice)
* Statically addressing the NAS and my PC (no dice)

Tags DD-WRT, Networking, Synology

Hardware

The magic of checkdisk…be patient

Post author By kylos101
Post date February 9, 2015
No Comments on The magic of checkdisk…be patient

Earlier today my desktop was suffering, it has two Western Digital 1TB disks (WDC WD10EXEX-60ZF5A0) and they were mostly at 100% in Task Manager. My system was crawling, the drives are mirrored, but I was still worried!

I ran “chkdsk /r” and rebooted at 10:00am…ten hours later my computer has risen from the ashes! Normal disk performance, baby!!!

Morale of the story? Be patient out there…happy computing.

Software development

Git aliases

A coworker recommended this Pluralsight course, and one of the things the instructor introduced to me are git aliases.

I’m using Windows 8 (instead of OSX, like the instructor), found this site helpful, but the git hist alias needed a slight tweak:

git config --global alias.hist "log --pretty=format:'%h %ad | %s%d [%an]' --graph --date=short"

Here’s what the output looks like for ‘git hist’:

* fecb12a 2014-11-11 | Rearrange basic test, add threading tests (HEAD, origin/master, origin/HEAD, master) [kylos101]
* f132e89 2014-10-22 | Update README.md [Kyle Brennan]
* 4fd96ba 2014-10-19 | Now functional! [kylos101]
* f231b54 2014-10-13 | Put the breaker in its own repo, started UT [kylos101]

Tags git, Pluralsight, Windows

Friends and Family Music

Mai and Fred

Hi,

Here are a few songs from my grandfather and grandmother. They recorded this in their mid to late 20’s, at the time they were touring to Rio De Janeiro by ship.

My favorite song starts at 3:49…enjoy!

Here’s an earlier post from my grandfather’s senior citizen band.

Friends and Family Music

Side 1 of a Papa tape

I have a tape that was Grandfather’s (Papa):

This is side 1 of the tape, it contains a number of different recordings from various gigs. It was made by a friend, he must have played in a band and known Papa for a while… I’m not sure who the fellow is, but sure am glad he made the recording.

01 – Intro