Share And Share Alike
Every once in a while, I like to see who is clicking through to my blog. It helps me figure out what’s important to write about and who reads things. I found a recent comment that made me think about what I’m doing from a different perspective.
The Con Game
I get occasional inbound traffic from Reddit. The comments on Reddit are a huge reason to follow threads on the site. In one particular thread on /r/networking linked back to my blog as a source of networking news and discussion. But a comment gave me pause:
https://www.reddit.com/r/networking/comments/3mpjpz/networking_websites/cvgyfye
And I quote:
Cons : they almost all know each other and tend to promote each other content.
This was a bit fascinating to me. Of the people in that particular comment, I’ve only ever met one in person. I do know quite a few people in the networking space as part of my career, both related to Tech Field Day and just through writing.
It is true that I share quite a bit of content from other writers. My day job notwithstanding, I feel it is my duty to identify great pieces of writing or thought-provoking ideas and share it Continue reading
5 Fundamental Requirements For High-Performing Networks
A new set of network essentials is necessary to meet the challenges of today's network administration and management.5 Fundamental Requirements For High-Performing Networks
A new set of network essentials is necessary to meet the challenges of today's network administration and management.
Ciena Rolls Out First Commercial Version of ONOS
As a side benefit, Ciena won’t need a third-party controller anymore.
Broadcom Tomahawk 101
Juniper recently launched their Tomahawk-based switch (QFX5200) and included a lot of information on the switching hardware in one of their public presentations (similar to what Cisco did with Nexus 9300), so I got a non-NDA glimpse into the latest Broadcom chipset.
You’ll get more information on QFX5200 as well as other Tomahawk-based switches in the Data Center Fabrics Update webinar in spring 2016.
Here’s what I understood the presentation said:
Read more ...How to not present to the Swiss
Being English and being constantly exposed to bad language practice (not the curse word type), during a recent trip to Switzerland, I totally failed in keeping my English plain and vanilla. Their English was better than my own and in this sense I totally failed. Here is my top five of innocently said statements that just do not translate. If nothing else, it might help you to not make the same mistake when presenting to others not of your own tongue.
1) Shooting fish in a barrel
2) Stuck under a rock
3) Lots of ways to skin a cat, including with a machine gun
4) Everything including the kitchen sink
5) More features than you can shake a stick at
Speaking English is really hard to do when you’re English!!!
The post How to not present to the Swiss appeared first on ipengineer.net.
DNS Terminology
The DNS is defined in literally dozens of different RFCs. The terminology used by implementers and developers of DNS protocols, and by operators of DNS systems, has sometimes changed in the decades since the DNS was first defined. This document gives current definitions for many of the terms used in the DNS in a single document. I saw this RFCRisky Business #394 — Matthew Green talks “crypto bans”
On this week's show we're chatting with Johns Hopkins University cryptographer Matthew Green about rumblings emanating out of DC with regard to "stopping encryption", whatever the hell that means.
In this week's sponsor interview we're chatting with Oliver Fay from Context about a paper they did in conjunction with UK's CERT about exploit kits. How much do they cost? Are there any that stick out as being particularly good? Or bad, depending on your point of view...
Links to everything are in this week's show notes.
Quick tips and reference on tcpdump tool
Linux bridges are powerful virtual switches that come with the networking stack of core Linux. Bridging is loaded as part of the bridge kernel module. Linux bridges amongst others have made it possible to network virtual machines and containers on a KVM based linux node.
Very so often I have had to go in and figure out where the packets either egressing the VM or ingress traffic to the VM magically vanishes and tcpdump has been one of the most valuable tools for me. Debugging in the networking world pretty much has a standard algorithm to it: Start from the source and check for packets along the route to the destination at every hop. Once you figure out where the packet disappears, where the black hole is, it is half the problem solved.
To do exactly this we have a variety of debugging tools ranging from Wireshark that captures packets to tcpdump and sniffers. All of these have one thing in common - they are user processes that hook onto specific kernel parameters to capture the packets. For example, although you do not explicitly set an interface in promiscuous mode this interface is moved to promiscuous mode when the packet Continue reading
Dell May Buy Back $3B in VMware Tracking Stock
Dell is also reportedly looking at selling Perot Technology, too.
QoS Done Right
Sonus VellOS controls the network based on dynamic unified communications requirements. Network resources are automatically allocated to satisfy UC demands, turning QoS into Quality of Experience.
The post QoS Done Right appeared first on Packet Pushers.
QoS Done Right
Sonus VellOS controls the network based on dynamic unified communications requirements. Network resources are automatically allocated to satisfy UC demands, turning QoS into Quality of Experience.
The post QoS Done Right appeared first on Packet Pushers.
Running devstack older than Kilo release
| The famous network topology diagram as seen in Juno - Openstack (My preference over the one in Kilo/Liberty) |
Juno and older code is now represented as tags and may or may not be supported by the individual project teams. However thanks to subversioning and git, you can check out code of juno or older releases by using tags now.
#git tag -l --> Lists the tags present in the repository.
#git checkout tags/ -b --> Checkout code from a tag.
All stable older releases have now been named following the convention "