OSPF on CE-PE links
A pretty long post that summarizes the characteristics of OSPF protocol when using it on a CE-PE link. Read along to review its features, learn about BGP extended communities and loop prevention mechanisms for OSPF on CE-PE links.
New Blog Location / IPv6 Hacking – “thc-ipv6” [Part 1]
I’m pleased to announce the first post in my blog’s new location, here at keepingitclassless.net. I have been running a casual blog from my house for the past two years with mixed success. Residential internet connections as they are, this was usually hit or miss regarding whether or not my blog was even reachable. I’ve moved all that content to a web host which should prove to be much more reliable.New Blog Location / IPv6 Hacking – “thc-ipv6” [Part 1]
I’m pleased to announce the first post in my blog’s new location, here at keepingitclassless.net. I have been running a casual blog from my house for the past two years with mixed success. Residential internet connections as they are, this was usually hit or miss regarding whether or not my blog was even reachable. I’ve moved all that content to a web host which should prove to be much more reliable.New Blog Location / IPv6 Hacking – “thc-ipv6” [Part 1]
I’m pleased to announce the first post in my blog’s new location, here at keepingitclassless.net. I have been running a casual blog from my house for the past two years with mixed success. Residential internet connections as they are, this was usually hit or miss regarding whether or not my blog was even reachable. I’ve moved all that content to a web host which should prove to be much more reliable.Difference for PORTFAST & BPDUFILTER used globally or at interface-level
Portfast + bpdufilter (used together) can be enabled globally or at interface level.
Although the first impression is that the only difference is the global or per-interface effect, this is not entirely true and another subtle and important difference is described in this post.
How to recover Cisco IOS from rommon
Thought I would add this to my blog to help anyone that was in the same situation I had back in April. A big thanks to Richard Morrell ( @richardmorrell ) for this! If you have a Cisco router which … Continue reading
Debunking the IPv6 Has More Security and QoS Myths
I thought that in the year 2011 …when the we’ve had so much talk about IPv6, lots of the smoke about what IPv6 is capable of and what it isn’t capable of would have cleared. Unfortunately not. Today I read this … Continue reading
Matching packets based on their size
Welcome on my very first post on my new fresh technical blog!
This post shows different ways of how to match packets based on their length. While this may not be very common in real production, you will find it useful during your CCIE preparations.
OpenBSD 4.9 SNMP MIBs
I've updated my SNMP MIBs to support OpenBSD 4.9.
IPv6 Subnetting Made Easy
Introduction Call it emotional attachment to IPv4 or whatever you like, but recently I have become more and more interested in finding and easy way to subnet IPv6 prefixes in my head like we are used to doing in IPv4. … Continue reading
Benchmarking OpenBSD: UP vs MP for “make build”
I used to have a machine sitting around that I would power up whenever I needed to build a new OpenBSD kernel or rebuild the source tree due to a patch or a new version of the OS being released. Eventually I moved that machine into a VirtualBox virtual machine running on my desktop. Recently I moved that VM into VMWare's free ESXi hypervisor running on some pretty decent hardware. It got me wondering how much I could lower compile times by adjusting how many vCPUs were allocated to the VM.
The Forgotten skill of technical writing
It’s a beautiful sunny day that puts a big smile on my face and I want to share it with you, so please put a big smile on your face now and before you continue. Your smile will make my day even brighter. OK, back to our post but keep smiling If you are reading [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.Enable WordPress Plugins From the Shell
As a follow-on to my previous post about disabling plugins, this script will enable plugins from the shell.