In the first post I shared with you my code to calculate tunnel numbers in Cisco SD-WAN. I’m a beginner in Python so I thought it would be a great learning experience to have someone experienced in Python, such as
Cisco to Offer Online Testing
Other vendors such as Juniper and AWS have already started doing it, now it’s Cisco’s turn to offer online testing. This is especially welcome in Covid times where it’s difficult to go visit an on-premises Pearson/Vue test center. Starting April
SD-WAN – Glorified DMVPN?
I had an interesting discussion with Jon Cooper in the Network Collective Slack. The discussion was around SD-WAN. We were discussing if SD-WAN is just a “glorified DMVPN” or if it’s something more than that. Note that this was a
Cisco IT Blog Awards Finalist
I’m proud to announce that I’ve been selected as a finalist in the Cisco IT Blog Awards in the “most inspirational” category. I’m happy to be in this category as I hope that my posts here have inspired others to
General – Behavior Of QoS Queues On Cisco IOS
I have been running some QoS tests lately and wanted to share some of my results. Some of this behavior is described in various documentation guides but it’s not really clearly described in one place. I’ll describe what I have
Petition to Increase Cisco VIRL Node Limit
Cisco VIRL is a great tool but it is artificially limited to a maximum of 15 nodes today. I have created a petition to collect names to send to Cisco, to show that the community really wants to increase this
Cisco Adds New Routers In the ISR 4000 Family
The Cisco ISR G2 routers have been around for a while now. Roughly a year ago, Cisco released the Cisco 4451-X router which was the first ISR running IOS-XE. Cisco has now added new routers to the 4000 family, which
A Short Update on CML from #CLUS
Hey everyone, I’ve been having a really good time here at Cisco Live US. Here is a short update on CML. General Info CML is being released end of June or beginning of July. The corporate edition with a base
GNS3 – It’s time to come clean
Many network engineers, Cisco students and people just interested in networking has used GNS3 in the past for studies and Proof of Concepts (PoC). Despite it being a CPU hog, bugs in the Ethernet drivers and lack of stability it
Cisco Flex link
Introduction Flex link is a Cisco solution which replaces STP in certain network topologies. It works by detecting link down on a primary interface and then bringing up the backup interface that has been defined as backup. It is most