Archive

2026  1

October  1

Resurrecting the Blog: How I Restored the Archive and Preserved 15 Years of Links

4 October 2026 · 6 min · 1138 words · Darren O'Connor

2021  1

December  1

Welcome Back

16 December 2021 · 1 min · 161 words · Darren O'Connor

2016  1

June  1

Cisco Live 2016 – Las Vegas

29 June 2016 · 1 min · 156 words · Darren O'Connor

2015  7

December  1

One Million Views

4 December 2015 · 2 min · 300 words · Darren O'Connor

October  1

Visualising Big O notation

5 October 2015 · 4 min · 650 words · Darren O'Connor

May  2

Linked lists

14 May 2015 · 13 min · 2613 words · Darren O'Connor

Structs in C

5 May 2015 · 7 min · 1295 words · Darren O'Connor

April  1

Visualising recursive functions

20 April 2015 · 7 min · 1296 words · Darren O'Connor

February  1

Life is busy

22 February 2015 · 1 min · 143 words · Darren O'Connor

January  1

Python and MySQL

6 January 2015 · 9 min · 1883 words · Darren O'Connor

2014  7

December  5

Python paths and Cron logging

17 December 2014 · 2 min · 366 words · Darren O'Connor

Using bird to pull global BGP route counts

15 December 2014 · 3 min · 548 words · Darren O'Connor

When and when not to multithread

15 December 2014 · 4 min · 710 words · Darren O'Connor

Basic Python Multithreading

12 December 2014 · 4 min · 736 words · Darren O'Connor

DHCP Snooping – Filter those broadcasts!

10 December 2014 · 5 min · 1001 words · Darren O'Connor

November  1

ESXi whitebox server

17 November 2014 · 4 min · 801 words · Darren O'Connor

October  1

Basic OOP Python

28 October 2014 · 6 min · 1071 words · Darren O'Connor

2013  5

November  1

3750G QoS for EF and BE traffic

4 November 2013 · 5 min · 1012 words · Darren O'Connor

August  1

Junos and IOS QoS – Part 3 of 4 – Shaping to EVC speed with priority

1 August 2013 · 4 min · 698 words · Darren O'Connor

July  2

Junos and IOS QoS – Part 2 of 4 – Schedulers and policy-maps

31 July 2013 · 5 min · 1004 words · Darren O'Connor

Junos and IOS QoS – Part 1 of 4 – Marking traffic

30 July 2013 · 3 min · 600 words · Darren O'Connor

April  1

RELOAD IN X ? Why not just revert the config instead of reloading the router?

23 April 2013 · 3 min · 590 words · Darren O'Connor

2012  3

November  2

MPLS L3VPN- Route Distinguisher vs Route Target vs VPN Label

8 November 2012 · 7 min · 1363 words · Darren O'Connor

Hurricane Sandy’s affect on the core BGP table

3 November 2012 · 1 min · 74 words · Darren O'Connor

June  1

SPAN, RSPAN, Layer 2 control packets and VLANS

4 June 2012 · 5 min · 1010 words · Darren O'Connor

2011  6

April  3

Protocol Fundamentals – dot1q

23 April 2011 · 7 min · 1372 words · Darren O'Connor

Building my topology

22 April 2011 · 7 min · 1360 words · Darren O'Connor

Lab almost complete

18 April 2011 · 1 min · 89 words · Darren O'Connor

March  3

RIB, FIB, LFIB, LIB ETC

30 March 2011 · 5 min · 880 words · Darren O'Connor

Creative Routing Contest

30 March 2011 · 1 min · 22 words · Darren O'Connor

350-001 CCIE Written v4 passed

21 March 2011 · 1 min · 24 words · Darren O'Connor

2010  4

August  1

Protocol Fundamentals – Traceroute differences between Windows and Linux

5 August 2010 · 2 min · 395 words · Darren O'Connor

July  2

Protocol Fundamentals – traceroute

30 July 2010 · 3 min · 583 words · Darren O'Connor

Protocol Fundamentals – ARP

28 July 2010 · 2 min · 364 words · Darren O'Connor

January  1

Access-lists vs Prefix-lists

6 January 2010 · 5 min · 1030 words · Darren O'Connor