Cisco Networking

BGP Load Sharing

What is load sharing and why to use it?Load balancing with BGP is not possible in a multihomed environment with two ISPs. BGP selects only the single best path to a destination among the BGP paths that are learned from different ASs, which makes load balancing impossible. However, load sharing Read more…

By Joe Conklin, ago
CentOS

Install MySQL Galera Cluster on Centos 7

What is MySQL cluster and how to use it?MySQL Galera Cluster is a synchronous multi-master cluster, available on Linux only, and only supports the XtraDB/InnoDB storage engines . It is designed to provide high availability and high throughput with low latency, while allowing for near linear scalability. MySQL Cluster is Read more…

By Joe Conklin, ago
Application Containers

Installing Docker on Centos 7

What are Docker containers and how to use them?Docker is a software technology providing containers. Docker provides an additional layer of abstraction and automation of operating-system-level virtualization on Windows and Linux. Docker uses the resource isolation features of the Linux kernel such as cgroups and kernel namespaces, and a union-capable Read more…

By Joe Conklin, ago
Cisco Networking

BGP Conditional Advertisement

What is conditional advertisement and why to use it?Normally, routes are propagated regardless of the existence of a different path. The BGP conditional advertisement feature uses the non-exist-map and the advertise-map keywords of the neighbor advertise-map command in order to track routes by the route prefix. If a route prefix Read more…

By Joe Conklin, ago