Tagged: vlanmanager

Openstack Networking for Scalability and Multi-tenancy with VlanManager

In a previous post I explained the basic mode of network operation for OpenStack, namely FlatManager and its extension, FlatDHCPManager. In this post, I’ll talk about VlanManager. While flat managers are designed for simple, small scale deployments, VlanManager is a good choice for large scale internal clouds and public clouds. As its name implies, VlanManager relies on the use of vlans (“virtual LANs”). The purpose of vlans is to partition a physical network into distinct broadcast domains (so that host groups belonging to different vlans can’t see each other). VlanManager tries to address two main flaws of flat managers, those being: Continue reading