I remember Ansible pointing to Python 2.x being an issue last time as well, but I do a quick lab demo at the bottom to show I am all set to launch out of the dry walls of text, and back into the lab in the coming days / posts before I take my (now … Continue reading Ansible – Some basics / theory before diving into Ansible Labbing in VMware and a GNS3 Network!
I will pick up right where I left off from the previous Intro to Expert thread here! That being said, I will be looking at another noob feeling topic in depth! Python Sequence Types The 5 sequence types are as follow the (first 3 are actually built into Python): StringListTupleRangeBytes / Bytearray What is a … Continue reading Python 3 – Learning it properly this time from Hello World to Scripting, learning Python 3 from scratch Post #1 Completed – Session #2 begins!
Like other Linux distros, CentOS has the commands and tools to monitor a network. Before diving into the network monitoring I will show some changes that are made in CentOS 8 (and also RHEL 8). In CentOS 8 the default service to manage the network-related tasks is Network Manager. First I will show the connections … Continue reading Network Monitor in CentOS 8
Basically, ‘iptables’ is the packet filter system in RHEL systems. The best way to know what is ‘iptables’ is well written on the man page. In this article, I will show some simple and basic ‘iptables’ configurations. The three default chains in the iptables are Input, Forward, and Output. The ‘iptables –L’ command will show … Continue reading IPtables
Pictured above is an awesome CI/CD DevNet Sandbox that unfortunately glitched out! The CI/CD Pipeline Sandboxes seem glitch prone from my experiences tonight, which is not surprising given the complexity, however I will leave the lab up to the point Drone / Gogs glitched out as there was a basic getting it started guide which … Continue reading Cisco DevNet Sandbox for CI/CD, demo but unable to finish due to bug, thoughts on tools for labbing!
A fancy new Discord Server to collaborate / stream your lab / watch other stream! Being that I will be labbing my brains out on DevNet / Network Automation topics, I've created a discord server capable of Voice Channels which also allows for Video / Screen Sharing. I thought this would be a stellar idea … Continue reading New Loopedback Discord Server for Collaborating on labbing / Sharing your labbing / Saying Hello World!
This post will be covering all things Telephony for the DEVASC exam! This and "Compute" platforms (UCS Manager / Director / Intersight) will be the end review of my class, and really I am only going to be a high level overview of these, being its only 15% of the exam among a HUGE pool … Continue reading Week 6 of the DevNet Grind – CUCM / End User Data, Admin XML Layer (AXL), Contact Center / Finesse, and all things WebEx Teams!
Cisco Network Services Orchestrator (NSO) Cisco's Network Services Orchestrator is a platform to help companies transition into an SDN / Automated Network Solution, as the constant change in devices and limitation of vendor and service integrations has turned them away, where "Time to Market" requirements are critical as delays caused by new tool deployment will … Continue reading Week 6 of the DevNet Grind – Cisco Mgmt Platforms NSO and SD-WAN reviewed for exam day!
Network Automation and a list of the benefits it brings to Network Management Automation saves business operational expense (OPEX) when tasks can be automated, and before diving into the systems that bring this Automation at scale, wanted to review some the basic benefits it brings to the Enterprise Network: Device Provisioning - Automation makes device … Continue reading Week 6 of the DevNet Grind – Cisco Network Mgmt, IOS XE, Meraki, Difference in Data Planes, DNA Center, ACI, and NX-OS reviewed!
In this article, I will show how to make ssh tunnel to securely connect to the remote server. When we browse a website, the browser uses http to connect to a website. But http is not secure so without https it might cause a certificate issue. If the certificate is not trusted by the clients, … Continue reading SSH Tunnel Configuration in CentOS
The SDK (Software Development Kit) is the software toolbox for Developers! Unlike an API which is basically a set of URI's that are executed per the requirements of documentation used to help build them, SDK's are a set of tools for a specific device or system, often containing packages / integrated with libraries / documentation … Continue reading Week 6 of the DevNet Grind – SDK (Software Dev Kit) review of the different Cisco Platforms SDKs!
In this article, I am going to show how to configure SSH in a server to remotely connect to the client. First I will navigate to the .ssh directory. It is the directory where information about remotely connected devices is kept. For the client device, I will make a customized file and edit it. I … Continue reading SSH Configuration in CentOS
I just have to admit it - I know just enough Python to understand but not code it! Python is a lot like when I took "Intro to Spanish" in College, I can understand enough to get the drift of what is being said, but I could not speak a fluent sentence to save my … Continue reading Python 3 – Learning it properly this time from Hello World to Scripting, learning Python 3 from scratch Post #1 Completed – Will start #2 soon!
I will be powering through the theory of Cisco Security Platforms in this post! I don't know that I will have time to lab these individually, but wanted to document them at a high level view for my first pass over on the topics, and try to explain how they interact with with both Automation … Continue reading Week 6 of the DevNet Grind – Cisco Security Platforms, AMP, Firepower, ISE, Threat Grid, and Umbrella reviewed for exam day!
The above is graphic is how YANG / NETCONF / RESTCONF flow like an OSI Model! "Yet Another Next Generation" or YANG is defined in RFC 6020 as a "Data Modeling Language" used to model Configuration and State data manipulated by "Network Configuration Protocol" (NETCONF), NETCONF RPCs, and NETCONF notifications. Though YANG generally describes Network … Continue reading Week 6 of the DevNet Grind – Model Driven Programmability, YANG Data Modeling, NETCONF and RESTCONF Protocols reviewed for exam day!