CURL is a command line tool used to transfer and retrieve data in web. Let’s have a look at few of the useful options while debugging web issues. Basic syntax $CURL <Options> <hostname or ip-address> Options are optional. Hostname and IP-address can be interchanged depends upon the options we are selecting. First example is to use
Introduction Most of us take modern day Ethernet for granted. This is probably because it is what many of us have always known. This is especially true if you are like me and got into this crazy business . Today, Ethernet is a globally recognized and widely used standard. It is used in networks all
The ip unnumbered configuration command allows you to enable IP processing on a serial interface without assigning it an explicit IP address. Using ip unnumbered interface, we can “borrow” the IP address of another interface already configured on the router, which conserves network and address space. In other ways, when serial or any other
Here is an interesting video for Network Engineers have experience on Cisco devices and want to learn Arista switching. I tried Arista vEOS on VirtualBox. Cisco VIRL, GNS3 and UnetLab also support Arista image.
Here are the steps to solve Docker 403 forbidden error:
$ docker login --username=
Error response from daemon: unexpected status code: <html><body><h1>403 Forbidden </h1>
This post is about Lambda which remain one of the most confusing topic for beginners. After reading couple of articles, here I’m sharing gist of them. Lambda is used to create function like def() but it returns the function instead of assigning name to it. This is the reason it is also called anonymous function.
Few days back, i was working on a 4500 switch standby SUP replacement when i stumble upon an unknown issue. When inserting new supervisor module in standby slot, it is coming to COLD State which should be the ideal case. After analysing the logs, i found “C4K_REDUNDANCY-2-HANDSHAKE_TIMEOUT_ACTIVE: The handshake messaging between active and standby has not
Overview In this post, we will going to learn how to code a easy to use port scanner in Python. In my view, python is one of the most powerful scripting language. There are many ways of doing this but we will going to learn it by using it’s built in module Socket. Sockets The
So far we know that we can make routers and switches work the way we want them to. We can also configure them to report certain events. But i believe, a few of us would know that we can make our Cisco equipment act to certain events. We can make them perform scheduled operations (for
This Deep-Dive series is focused on the advantages of Nexus 1000v Solution across spectrum of technologies and how it can be leveraged to enhance your Data Center Virtual Infrastructure to meet the next-generation goals.Cisco Nexus 1000V Series Switches provide a comprehensive and extensible architectural platform for virtual machine (VM) and cloud networking. The switches are