NVMe, NVMe over Fabrics and RDMA for network engineers

HDD

In the past, the evolution of network-based storage was not really a problem for network engineers: the network was fast and the spinning hard drives were slow. Natural network upgrades to 10Gb, 40Gb, and 100Gb Ethernet were more than sufficient to meet the networking needs of storage systems. But now, with the introduction of ultra-fast solid-state disks (SSDs) and Non-Volatile Memory Express (NVMe), this is no longer true! Storage teams now have the ability to potentially saturate the network with incredibly fast devices.

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Automate file uploads to your Cisco Nexus switches

If you have more than three Cisco Nexus switches in nx-os mode, and you are not using Cisco DCNM or any other similar tool, you probably already have encountered this question: How to automate file uploads to your Cisco Nexus switches? Here is a turnkey Python script using Netmiko’s SCP function to do this.

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Cisco NX-OS Graceful Insertion and Removal (GIR)

Cisco GIR

If you operate a data-center network with Cisco Nexus, you’ve probably already faced the problem of how to perform a maintenance on one of the two switches of a vPC pair, with minimum impact and risks for the production network. Cisco NX-OS contains a feature called “Graceful Insertion and Removal” or GIR to help you for that. Here is how it works.

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Basic Linux Networking tips and tricks part-1: ip and nmcli commands

We have all heard, at one time or another, a system administrator blaming the network. Then, it is up to the network engineers to prove that the network is not in cause. To do this, a minimum of network troubleshooting skills on Linux systems could be required. For the first post in the series: many examples of how to use the ip and nmcli commands.

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