Well it has been just over 7 weeks now since I failed my first attempt at the CCIE Lab Exam in Routing & Switching in Brussels. On the way home on the Eurostar I had vowed to take the weekend off and get straight back on the horse and start labbing again for 4 hours […]
The post CCIE Lab Exam attempt #2 – How I’m going to study better! appeared first on Packet Pushers Podcast and was written by Roger Perkin.
For the first several years of my career, I worked for a smaller technology reseller. These types of organizations are often known as value added resellers, or VARs. The role of a VAR is to combine their expertise with some technology they sell in a way that solves the challenges of their customers. The expertise […]
The post 5 Reasons to Consider Working For a Technology Reseller appeared first on Packet Pushers Podcast and was written by Paul Stewart.
Here's a topic that comes up more and more now that FabricPath is getting more exposure and people are getting more familiar with the technology: Can FabricPath be used to interconnecting data centers?
For a primer on FabricPath, see my pervious article Five Functional Facts about FabricPath
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FabricPath has some characteristics that make it appealing for DCI. Namely, it extends Layer 2 domains while maintaining Layer 3 — ie, routing — semantics. End host MAC addresses are learned via a control plane, FP frames contain a Time To Live (TTL) field which purge looping packets from the network, and there are no such thing as blocked links — all links are forwarding and Equal Cost Multi-Pathing (ECMP) is used within the fabric. In addition, since FabricPath does not mandate a particular physical network topology, it can be used in spine/leaf architectures within the data center or point-to-point connections between data centers.
Sounds great. Now what are the caveats?
New voices gather in the Packet Pushers virtual boardroom for a discussion of Cisco’s layer 2 extension technology, Overlay Transport Virtualization (OTV). Ethan Banks hosts a recording of about two hours worth of content about OTV; this show is the first hour. Joining Ethan are first-time guests Jamie Caesar, Colby Glass and Ken Matlock. Jamie, […]
The post PQ Show 24 – Cisco OTV Deep Dive Part 1 appeared first on Packet Pushers Podcast and was written by Ethan Banks.
The other day I was called in to assist with issue that had been open for a few days. The primary reason for my involvement was to confirm network connectivity was permitted as required by a recently installed application. After an initial look, it was apparent that the application wasn’t even trying to access network […]
The post Have Respect For The Work You Do appeared first on Packet Pushers Podcast and was written by Paul Stewart.
For the past few years, many people have been suggesting that the days of IDS (intrusion detection system) are numbered. When IDS was first launched, it was seen as an answer to a lot of network security problems: deep packet inspection with constant monitoring and alerts. However, one of the biggest problems with IDS is […]
Lately I have been investigating how to monitor BGP peering session via SNMP instead of traps/syslog messages and I found out that this feature is not documented properly for IOS XR. Finally I managed to get it working, so I thought that it would be worth sharing with the community. In our example, we have […]
The post Monitoring VRFs on IOS-XR appeared first on Packet Pushers Podcast and was written by David Barroso.
This is my third and probably last installment of an ongoing story about our quest for OpenFlow 1.0 capable switches with a specific requirement - the capability to modify L3 destination addresses. The background of why Sakura Internet needs such switches for the purpose of DDoS attack mitigation is explained in my first article, along with […]
The post Centec V330: My Kind of OpenFlow Switch appeared first on Packet Pushers Podcast and was written by Tamihiro Yuzawa.
Continuning on this week's theme of Markdown, I'll be explaining how to add Markdown to your blog in 3 easy steps.
Continuning on this week's theme of Markdown, I'll be explaining how to add Markdown to your blog in 3 easy steps.
From your Wordpress dashboard, head over to the Plugins tab and click
Add New. Search for "WP-Markdown" and install
Once your plugin has been installed, head on down to Settings >
Writing and scroll to the Markdown section pictured below.
Enable Markdown wherever you like, but I'd recommend pages and posts
WARNING: Enabling Markdown will affect your existing posts/pages. I noticed that while my posts didn't look any different on the outside, behind the scenes they were a mess and required a little trying up.
Create a new post or page and practice your Markdown-Fu. Not sure where to start? Here's an example
# This is a first level heading
Here is some body text
## Second level of heading here
### And a Third
#### And so on and so forth
- Now some bullets
- Hopefully you are getting the hang of this now
- It's pretty easy
> Blockquotes are easy with Markdown Continue reading