October 2014
Intermediate to advanced
300 pages
6h 24m
English
Content preview from LEARNING OPENSTACK NETWORKING (NEUTRON)Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Choosing a networking plugin
Neutron networking plugins are responsible for implementing features that provide network connectivity to and from instances. The two plugins discussed in this book, LinuxBridge and Open vSwitch, implement those features in different ways.
LinuxBridge
When configured to utilize the LinuxBridge networking plugin, Neutron relies on the bridge and 8021q kernel modules to properly connect instances and other network resources to the virtual switch and forward traffic.
In a LinuxBridge-based network implementation, there are three distinct types of virtual networking devices:
- Tap devices
- VLAN interfaces
- Linux bridges
A tap device is how a hypervisor such as KVM implements a virtual network interface card. These virtual interfaces ...
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