August 2018
Beginner
462 pages
12h 36m
English
Content preview from Learning OpenStack Networking - Third Edition
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Distributing routers across the cloud
Much like nova-network did with its multi-host functionality, Neutron can distribute a virtual router across compute nodes in an effort to isolate the failure domain to a particular compute node rather than a centralized network node. By eliminating a centralized Layer 3 agent, routing that was performed on a single node is now handled by the compute nodes themselves.
Legacy routing using a centralized network node resembles the following diagram:
In the legacy model, traffic from the blue virtual machine to the red virtual machine on a different network would traverse a centralized network node hosting ...
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