Where servers, storage and networking combine to form Voltron.
For EVPN/VXLAN, Type 5 routes are used for two purposes: Internally and Externally Internally it s used to communicate which VTEPs have a given subnet instantiated on it. Here s an example of the output of the command show ip bgp route-type ip-prefix ipv4 on an Arista cEOS spine running EVPN/VXLAN. It s showing you that 10.1.10.0/24 (VLAN [ ]
With VMware jacking up the prices and killing off the free version of ESXi, people are looking to alternatives for a virtualization platform. One of the more popular alternatives is Proxmox, which so far I m really liking. If you re looking to run CVP on Proxmox, here is how I get it installed. I m not sure [ ]
Ansible is a great platform for network automation, but one of its quirks is its sometimes obtuse errors. I was running a playbook which logs into various Arista leafs and spines and does some tests. I m using SSH to issue the commands (versus eAPI). I got this error: One of the little things that trips [ ]
When choosing an underlay for an EVPN/VXAN network, the prevailing wisdom is that BGP is the best choice for the underlay routing protocol. And overall, I think that s true. But OSPF can make a compelling underlay too, as it has a few logistical advantages over BGP in certain cases. When building out EVPN/VXLAN networks, I [ ]
TL;DR: If you re a sysadmin or network administrator who doesn t know vi/vim, I wouldn t worry about it. Nano as a Linux/Unix editor will suffice in just about every situation you re likely to be involved in. Vi (and its successor, vim) is a text editor commonly used on Unix-like systems like Linux, the BSDs, and MacOS [ ]
It s all fun and games until you can t ping your default gateway. While EVPN/VXLAN brings a number of benefits when compared to a more traditional Core/Aggregation/Access layer style network with only VLANs and SVIs, it is different enough that you ll need to learn some new troubleshooting techniques. It s not all that different than what you ve [ ]
There is an incorrect assumption that comes up from time to time, one that I shared for a while, is that VMware ESXi virtual NIC (vNIC) interfaces are limited to their speed . In my stand-alone ESXi 7.0 installation, I have two options for NICs: vxnet3 and e1000. The vmxnet3 interface shows up at 10 Gigabit [ ]
So, cut-through switching isn t a thing anymore. It hasn t been for a while really, though in the age of VXLAN, it s really not a thing. And of course with all things IT, there are exceptions. But by and large, Cut-through switching just isn t a thing. And it doesn t matter. Cut-through versus store-and-forward was a preference [ ]
FCoE is dead. We re beyond the point of even asking if FCoE is dead, we all know it just is. It was never widely adopted and it s likely never going to be widely adopted. It enjoy a few awkward deployments here and there, and a few isolated islands in the overall data center market, but [ ]
The following post is aimed for photographers and other digital hoarders. Those of us that want to keep various digital assets not just for a few years, but a lifetime, and even multiple lifetimes (passed down, etc.) There are three levels of data protection: Data resiliency, data backup, and data archive. Data Resiliency (Redundant Disks, [ ]