:: SHORTS: Without chips, no more chips
As the world suffers from chip shortages (and several other things), IT projects find themselves more and more in challenging positions. Delivery of new network hardware is postponed month after…
:: IT Blog Awards 2021
Wow!!! For the second year in a row my blog has been nominated for the #ITBlogAwards. I feel really honored and humbled to be recognized for sharing knowledge and insight.…
:: Cisco SD-WAN: stuck tasks in vManage
Hi there, As I'm using my lab environment to testdrive new features, I stumbled upon an annoying behavior with Multi-Cloud Auditing. I'm not going te tell how this works, but…
:: Guest shell and iPerf3
Now I dive into one of the options to what extend guest shell can be used. Let's try iPerf3 for some speed and load testing. For the starting point, I…
:: It’s here! The CCIE LAB Image
A few days ago Peter Paluch posted a thread on Cisco Learning Network. He has created an OS image based on Debian that is used in the actual CCIE EI…
IT Blog Awards Finalists 2020
:: The surprise of surprises Just on a random mid-week evening sitting at the diner table eating my home made hamburger. All of a sudden my twitter feed explodes. What!? Co-networker…
SD-WAN :: Platinum Library
For the past few months I've been studying the SD-WAN course provided by Cisco. As a partner you can have access to a lot of course material at this moment.…
Network Fundamentals :: Etherchannels
EtherChannels AKA LAG, Port-channels, NIC teaming, etc Main goal is to improve bandwidth and forwarding capabilities.LAG hides each member from an upper layer protocol, in this case STP. Where STP…
Network Fundamentals :: The 802.1Q Packet
IEEE 802.1Q An additional of 32 bits are added to packet header consisting of: Tag protocol identifier (TPID): 16 bitsBelow are part of the TCI structure and is divided in…
SD-WAN :: Deploying the controllers
I've noticed that deploying SD-WAN controllers come with a special threatment. When working your way through it and deploying more config than needed could result in controllers not being added…