Kategorie: Linux Networking

All around Linux networking

Linux Network Namespaces – Background

Namespaces Managing network namespaces using the ip command is the prefered way. It is helpful to understand, what’s going on in the (kernel) background. If you create two network namespaces using

you find to entries in the directory /var/run/netns/

Each process has an unique inode assigned. This inode makes it possible to check, […]

Updated: 13/11/2013 — 21:08

Switching Performance – Connecting Linux Network Namespaces

In a previous article I have shown several solutions to interconnect Linux network namespaces (http://www.opencloudblog.com).¬†Four different solutions can be used – but which is the best solution with respect to performance and resource usage? This is quite interesting when you are running Openstack Networking Neutron together with the Openvswitch. The systems used to run these […]

Updated: 26/04/2014 — 15:25

Linux Switching – Interconnecting Namespaces

Switching in software on Linux is one of the important parts when using virtualization technologies like KVM or LXC. Typical hosts do not provide one or more physical adapters for each NIC of a virtual machine in KVM or per container when using LXC. Something else must take the part to interconnect the virtual network […]

Updated: 18/05/2014 — 10:56