Configuration

• Active-active L3 Gateway with Multihoming
  • Why
  • Prerequisites
  • How
  • Use cases
  • Example
• Address Scopes
  • Accessing address scopes
  • Backwards compatibility
  • Create shared address scopes as an administrative user
  • Routing with address scopes for non-privileged users
• Automatic allocation of network topologies
  • Enabling the deployment for auto-allocation
  • Get Me A Network
  • Validating the requirements for auto-allocation
  • Project resources created by auto-allocation
  • Compatibility notes
• Availability Zones
  • Use case
  • Required extensions
  • Network scheduler
  • Router scheduler
  • L3 high availability
  • DHCP high availability
• BGP Dynamic Routing
  • Example configuration
  • Prefix advertisement
  • Operation with Distributed Virtual Routers (DVR)
  • IPv6
  • High availability
• BGP Floating IPs over L2 Segmented Networks
  • Configuring the Neutron API side
  • The BGP agent
  • Setting-up BGP peering with the switches
  • Setting-up physical network names
  • Setting-up the provider network
  • Setting-up the 2nd segment
  • Setting-up the provider subnets for the BGP next HOP routing
  • Adding a subnet for VM floating IPs and router gateways
  • Setting-up BGP advertizing
  • Per project operation
  • Cumulus switch configuration
  • Verification
• Agents and Services
  • Configuration options
  • L2 agents
  • Metadata agent
  • DHCP agent
  • L3 agent
  • External processes run by agents
• DHCP High-availability
  • Demo setup
  • Configuration
  • Prerequisites for demonstration
  • Managing agents in neutron deployment
  • Managing assignment of networks to DHCP agent
  • HA of DHCP agents
  • No HA for metadata service on isolated networks
  • Disabling and removing an agent
  • Enabling DHCP high availability by default
• DNS Integration
  • The Networking service internal DNS resolution
• DNS Integration with an External Service
  • Configuring OpenStack Networking for integration with an external DNS service
  • Use case 1: Floating IPs are published with associated port DNS attributes
  • Use case 2: Floating IPs are published in the external DNS service
  • Use case 3: Ports are published directly in the external DNS service
  • Performance considerations
  • Configuration of the externally accessible network for use cases 3b and 3c
  • The port’s dns_assignment attribute with use case 3
• DNS Resolution for Instances
  • Case 1: Each virtual network uses unique DNS resolver(s)
  • Case 2: DHCP agents forward DNS queries from instances
• Distributed Virtual Routing with VRRP
  • Configuration example
  • Known limitations
• Experimental Features Framework
• Floating IP Port Forwarding
  • Configuring floating IP port forwarding
• IPAM Configuration
  • The basics
  • Known limitations
• IPv6
  • Neutron subnets and the IPv6 API attributes
  • Project network considerations
  • Router support
  • Advanced services
  • Security considerations
  • OpenStack control & management network considerations
  • Prefix delegation
• Macvtap Mechanism Driver
  • Prerequisites
  • Architecture
  • Example configuration
  • Network traffic flow
• Metadata Service Caching
• Metadata Service Query Rate-limiting
• ML2 Plug-in
  • Architecture
  • Configuration
  • Reference implementations
• MTU Considerations
  • Jumbo frames
  • Instance network interfaces (VIFs)
  • Networks with enabled vlan transparency
• NDP Proxy
  • Configuration of NDP proxy
  • User workflow
  • Known limitations
• Network Segment Ranges
  • Why you need it
  • How it works
  • Default network segment ranges
  • Example configuration
  • Workflow
  • Known limitations
• Open vSwitch with DPDK Datapath
  • The basics
  • Using vhost-user interfaces
  • Using vhost-user multiqueue
  • Known limitations
• Open vSwitch Hardware Offloading
  • The basics
  • Using Open vSwitch hardware offloading
• Open vSwitch Native Firewall Driver
  • Configuring heterogeneous firewall drivers
  • Prerequisites
  • Enable the native OVS firewall driver
  • Using GRE tunnels inside VMs with OVS firewall driver
  • Differences between OVS and iptables firewall drivers
  • Open Flow rules processing considerations
  • Permitted ethertypes
  • References
• Packet Logging Framework
  • ML2/OVN Driver
  • ML2/OVS Driver
• Quality of Service (QoS)
  • Supported QoS rule types
  • L3 QoS support
  • Configuration
  • User workflow
• Quality of Service (QoS): Guaranteed Minimum Bandwidth
  • Limitations
  • Placement pre-requisites
  • Nova pre-requisites
  • Neutron pre-requisites
  • Propagation of resource information
  • Sample usage
  • On Healing of Allocations
  • Debugging
  • Links
• Quality of Service (QoS): Guaranteed Minimum Packet Rate
  • Limitations
  • Placement pre-requisites
  • Nova pre-requisites
  • Neutron pre-requisites
  • Propagation of resource information
  • Sample usage
  • On Healing of Allocations
  • Debugging
  • Links
• Role-Based Access Control (RBAC)
  • Supported objects for sharing with specific projects
  • Sharing an object with specific projects
  • Sharing a network with specific projects
  • Sharing a QoS policy with specific projects
  • Sharing a security group with specific projects
  • Sharing an address scope with specific projects
  • Sharing a subnet pool with specific projects
  • Sharing an address group with specific projects
  • How the ‘shared’ flag relates to these entries
  • Allowing a network to be used as an external network
  • Preventing regular users from sharing objects with each other
  • Improve database RBAC query operations
• Routed provider networks
  • Prerequisites
  • Example configuration
  • Create a routed provider network
  • Migrating non-routed networks to routed
  • Routed provider networks as external networks for tenant routed networks
  • Multiple routed provider segments per host
• Router flavors with the L3 OVN service plugin
• SR-IOV
  • The basics
  • Using SR-IOV interfaces
  • SR-IOV with ConnectX-3/ConnectX-3 Pro Dual Port Ethernet
  • SR-IOV with InfiniBand
  • Known limitations
• Service Function Chaining
  • Architecture
  • Resources
  • Operations
• Service Subnets
  • Operation
  • Usage
• Subnet Onboarding
  • How it works
• Subnet Pools
  • Why you need them
  • How they work
  • Quotas
  • Default subnet pools
• Trunking
  • Operation
  • Example configuration
  • Using trunks and subports inside an instance
  • Trunk states
  • Limitations and issues
• WSGI Usage with the Neutron API
  • WSGI Application
  • Neutron API behind uwsgi
  • Neutron API behind mod_wsgi
  • Start Neutron RPC server
  • Neutron Worker Processes

Note

For general configuration, see the Configuration Reference.