Local Networking¶
The following figure illustrates one networking mode without cross Neutron networking requirement, only networking inside one region is needed.
+-----------------+ +-----------------+
| RegionOne | | RegionTwo |
| | | |
| ext-net1 | | ext-net2 |
| +-----+-----+ | | +-----+-----+ |
| | | | | |
| | | | | |
| +--+--+ | | +--+--+ |
| | | | | | | |
| | R1 | | | | R2 | |
| | | | | | | |
| +--+--+ | | +--+--+ |
| | | | | |
| | | | | |
| +---+-+-+ | | +---++--+ |
| net1 | | | net2 | |
| | | | | |
| +-------+---+ | | +-------+----+ |
| | instance1 | | | | instance2 | |
| +-----------+ | | +------------+ |
+-----------------+ +-----------------+
How to create this network topology¶
Create external network ext-net1, which will be located in RegionOne. Need to specify region name as the value of availability-zone-hint. If availability-zone-hint is not provided, then the external network will be created in a default region.
$ neutron --os-region-name=CentralRegion net-create --provider:network_type vlan --provider:physical_network extern --router:external --availability-zone-hint RegionOne ext-net1
+---------------------------+--------------------------------------+
| Field | Value |
+---------------------------+--------------------------------------+
| admin_state_up | True |
| availability_zone_hints | RegionOne |
| id | a3a23b20-b0c1-461a-bc00-3db04ce212ca |
| name | ext-net1 |
| project_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| provider:network_type | vlan |
| provider:physical_network | extern |
| provider:segmentation_id | 170 |
| router:external | True |
| shared | False |
| status | ACTIVE |
| subnets | |
| tenant_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
+---------------------------+--------------------------------------+
Now you can also create flat type external network
$ neutron --os-region-name=CentralRegion net-create --provider:network_type flat --provider:physical_network extern --router:external --availability-zone-hint RegionOne ext-net1
+---------------------------+--------------------------------------+
| Field | Value |
+---------------------------+--------------------------------------+
| admin_state_up | True |
| availability_zone_hints | RegionOne |
| id | df2c8e3a-3f25-4cba-a902-33289f3a8aee |
| name | ext-net1 |
| project_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| provider:network_type | flat |
| provider:physical_network | extern |
| provider:segmentation_id | |
| router:external | True |
| shared | False |
| status | ACTIVE |
| subnets | |
| tenant_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
+---------------------------+--------------------------------------+
For external network, the network will be created in the region specified in availability-zone-hint too.
$ neutron --os-region-name=CentralRegion net-list
+--------------------------------------+----------+---------+
| id | name | subnets |
+--------------------------------------+----------+---------+
| a3a23b20-b0c1-461a-bc00-3db04ce212ca | ext-net1 | |
+--------------------------------------+----------+---------+
$ neutron --os-region-name=RegionOne net-list
+--------------------------------------+--------------------------------------+---------+
| id | name | subnets |
+--------------------------------------+--------------------------------------+---------+
| a3a23b20-b0c1-461a-bc00-3db04ce212ca | a3a23b20-b0c1-461a-bc00-3db04ce212ca | |
+--------------------------------------+--------------------------------------+---------+
Create subnet in ext-net1.
$ neutron --os-region-name=CentralRegion subnet-create --name ext-subnet1 --disable-dhcp ext-net1 163.3.124.0/24
+-------------------+--------------------------------------------------+
| Field | Value |
+-------------------+--------------------------------------------------+
| allocation_pools | {"start": "163.3.124.2", "end": "163.3.124.254"} |
| cidr | 163.3.124.0/24 |
| created_at | 2017-01-10T04:49:16Z |
| description | |
| dns_nameservers | |
| enable_dhcp | False |
| gateway_ip | 163.3.124.1 |
| host_routes | |
| id | 055ec17a-5b64-4cff-878c-c898427aabe3 |
| ip_version | 4 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | ext-subnet1 |
| network_id | a3a23b20-b0c1-461a-bc00-3db04ce212ca |
| project_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| revision_number | 2 |
| subnetpool_id | |
| tenant_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| updated_at | 2017-01-10T04:49:16Z |
+-------------------+--------------------------------------------------+
Create local router R1 in RegionOne
$ neutron --os-region-name=CentralRegion router-create --availability-zone-hint RegionOne R1
+-------------------------+--------------------------------------+
| Field | Value |
+-------------------------+--------------------------------------+
| admin_state_up | True |
| availability_zone_hints | RegionOne |
| availability_zones | |
| created_at | 2017-01-10T04:50:06Z |
| description | |
| external_gateway_info | |
| id | 7ce3282f-3864-4c55-84bf-fc5edc3293cb |
| name | R1 |
| project_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| revision_number | 1 |
| status | ACTIVE |
| tenant_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| updated_at | 2017-01-10T04:50:06Z |
+-------------------------+--------------------------------------+
Set the router gateway to ext-net1 for R1.
$ neutron --os-region-name=CentralRegion router-gateway-set R1 ext-net1
Set gateway for router R1
$ neutron --os-region-name=CentralRegion router-show R1
+-----------------------+------------------------------------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+------------------------------------------------------------------------------------------------------------+
| admin_state_up | True |
| created_at | 2017-01-10T04:50:06Z |
| description | |
| external_gateway_info | {"network_id": "a3a23b20-b0c1-461a-bc00-3db04ce212ca", "external_fixed_ips": [{"subnet_id": "055ec17a-5b64 |
| | -4cff-878c-c898427aabe3", "ip_address": "163.3.124.5"}]} |
| id | 7ce3282f-3864-4c55-84bf-fc5edc3293cb |
| name | R1 |
| project_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| revision_number | 3 |
| status | ACTIVE |
| tenant_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| updated_at | 2017-01-10T04:51:19Z |
+-----------------------+------------------------------------------------------------------------------------------------------------+
Create local network net1 in RegionOne.
$ neutron --os-region-name=CentralRegion net-create --availability-zone-hint RegionOne net1
+---------------------------+--------------------------------------+
| Field | Value |
+---------------------------+--------------------------------------+
| admin_state_up | True |
| availability_zone_hints | RegionOne |
| id | beaf59eb-c597-4b69-bd41-8bf9fee2dc6a |
| name | net1 |
| project_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| provider:network_type | local |
| provider:physical_network | |
| provider:segmentation_id | |
| router:external | False |
| shared | False |
| status | ACTIVE |
| subnets | |
| tenant_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
+---------------------------+--------------------------------------+
Create a subnet in net1.
$ neutron --os-region-name=CentralRegion subnet-create net1 10.0.1.0/24
+-------------------+--------------------------------------------+
| Field | Value |
+-------------------+--------------------------------------------+
| allocation_pools | {"start": "10.0.1.2", "end": "10.0.1.254"} |
| cidr | 10.0.1.0/24 |
| created_at | 2017-01-10T04:54:29Z |
| description | |
| dns_nameservers | |
| enable_dhcp | True |
| gateway_ip | 10.0.1.1 |
| host_routes | |
| id | ab812ed5-1a4c-4b12-859c-6c9b3df21642 |
| ip_version | 4 |
| ipv6_address_mode | |
| ipv6_ra_mode | |
| name | |
| network_id | beaf59eb-c597-4b69-bd41-8bf9fee2dc6a |
| project_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| revision_number | 2 |
| subnetpool_id | |
| tenant_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| updated_at | 2017-01-10T04:54:29Z |
+-------------------+--------------------------------------------+
Add this subnet to router R1.
$ neutron --os-region-name=CentralRegion router-interface-add R1 ab812ed5-1a4c-4b12-859c-6c9b3df21642
Added interface 2b7eceaf-8333-49cd-a7fe-aa101d5c9598 to router R1.
List the available images in RegionOne.
$ glance --os-region-name=RegionOne image-list
+--------------------------------------+---------------------------------+
| ID | Name |
+--------------------------------------+---------------------------------+
| 2f73b93e-8b8a-4e07-8732-87f968852d82 | cirros-0.3.4-x86_64-uec |
| 4040ca54-2ebc-4ccd-8a0d-4284f4713ef1 | cirros-0.3.4-x86_64-uec-kernel |
| 7e86341f-2d6e-4a2a-b01a-e334fa904cf0 | cirros-0.3.4-x86_64-uec-ramdisk |
+--------------------------------------+---------------------------------+
List the available flavors in RegionOne.
$ nova --os-region-name=RegionOne flavor-list
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
| ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public |
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
| 1 | m1.tiny | 512 | 1 | 0 | | 1 | 1.0 | True |
| 2 | m1.small | 2048 | 20 | 0 | | 1 | 1.0 | True |
| 3 | m1.medium | 4096 | 40 | 0 | | 2 | 1.0 | True |
| 4 | m1.large | 8192 | 80 | 0 | | 4 | 1.0 | True |
| 5 | m1.xlarge | 16384 | 160 | 0 | | 8 | 1.0 | True |
| c1 | cirros256 | 256 | 0 | 0 | | 1 | 1.0 | True |
| d1 | ds512M | 512 | 5 | 0 | | 1 | 1.0 | True |
| d2 | ds1G | 1024 | 10 | 0 | | 1 | 1.0 | True |
| d3 | ds2G | 2048 | 10 | 0 | | 2 | 1.0 | True |
| d4 | ds4G | 4096 | 20 | 0 | | 4 | 1.0 | True |
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
Boot instance1 in RegionOne, and connect this instance to net1.
$ nova --os-region-name=RegionOne boot --flavor 1 --image 2f73b93e-8b8a-4e07-8732-87f968852d82 --nic net-id=beaf59eb-c597-4b69-bd41-8bf9fee2dc6a instance1
+--------------------------------------+----------------------------------------------------------------+
| Property | Value |
+--------------------------------------+----------------------------------------------------------------+
| OS-DCF:diskConfig | MANUAL |
| OS-EXT-AZ:availability_zone | |
| OS-EXT-SRV-ATTR:host | - |
| OS-EXT-SRV-ATTR:hostname | instance1 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | - |
| OS-EXT-SRV-ATTR:instance_name | |
| OS-EXT-SRV-ATTR:kernel_id | 4040ca54-2ebc-4ccd-8a0d-4284f4713ef1 |
| OS-EXT-SRV-ATTR:launch_index | 0 |
| OS-EXT-SRV-ATTR:ramdisk_id | 7e86341f-2d6e-4a2a-b01a-e334fa904cf0 |
| OS-EXT-SRV-ATTR:reservation_id | r-5t409rww |
| OS-EXT-SRV-ATTR:root_device_name | - |
| OS-EXT-SRV-ATTR:user_data | - |
| OS-EXT-STS:power_state | 0 |
| OS-EXT-STS:task_state | scheduling |
| OS-EXT-STS:vm_state | building |
| OS-SRV-USG:launched_at | - |
| OS-SRV-USG:terminated_at | - |
| accessIPv4 | |
| accessIPv6 | |
| adminPass | 23DipTvrpCvn |
| config_drive | |
| created | 2017-01-10T04:59:25Z |
| description | - |
| flavor | m1.tiny (1) |
| hostId | |
| host_status | |
| id | 301546be-b675-49eb-b6c2-c5c986235ecb |
| image | cirros-0.3.4-x86_64-uec (2f73b93e-8b8a-4e07-8732-87f968852d82) |
| key_name | - |
| locked | False |
| metadata | {} |
| name | instance1 |
| os-extended-volumes:volumes_attached | [] |
| progress | 0 |
| security_groups | default |
| status | BUILD |
| tags | [] |
| tenant_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| updated | 2017-01-10T04:59:26Z |
| user_id | a7b7420bd76c48c2bb5cb97c16bb165d |
+--------------------------------------+----------------------------------------------------------------+
Make sure instance1 is active in RegionOne.
$ nova --os-region-name=RegionOne list
+--------------------------------------+-----------+--------+------------+-------------+---------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+-----------+--------+------------+-------------+---------------+
| 301546be-b675-49eb-b6c2-c5c986235ecb | instance1 | ACTIVE | - | Running | net1=10.0.1.4 |
+--------------------------------------+-----------+--------+------------+-------------+---------------+
Verify regarding networking resource are provisioned in RegionOne.
$ neutron --os-region-name=RegionOne router-list
+------------------------------------+------------------------------------+------------------------------------+-------------+-------+
| id | name | external_gateway_info | distributed | ha |
+------------------------------------+------------------------------------+------------------------------------+-------------+-------+
| d6cd0978-f3cc-4a0b-b45b- | 7ce3282f-3864-4c55-84bf- | {"network_id": "a3a23b20-b0c1 | False | False |
| a427ebc51382 | fc5edc3293cb | -461a-bc00-3db04ce212ca", | | |
| | | "enable_snat": true, | | |
| | | "external_fixed_ips": | | |
| | | [{"subnet_id": "055ec17a-5b64 | | |
| | | -4cff-878c-c898427aabe3", | | |
| | | "ip_address": "163.3.124.5"}]} | | |
+------------------------------------+------------------------------------+------------------------------------+-------------+-------+
Create a floating IP for instance1.
$ neutron --os-region-name=CentralRegion floatingip-create ext-net1
+---------------------+--------------------------------------+
| Field | Value |
+---------------------+--------------------------------------+
| created_at | 2017-01-10T05:17:48Z |
| description | |
| fixed_ip_address | |
| floating_ip_address | 163.3.124.7 |
| floating_network_id | a3a23b20-b0c1-461a-bc00-3db04ce212ca |
| id | 0c031c3f-93ba-49bf-9c98-03bf4b0c7b2b |
| port_id | |
| project_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| revision_number | 1 |
| router_id | |
| status | DOWN |
| tenant_id | c0e194dfadd44fc1983fd6dd7c8ed384 |
| updated_at | 2017-01-10T05:17:48Z |
+---------------------+--------------------------------------+
List the port in net1 for instance1.
$ neutron --os-region-name=CentralRegion port-list
+------------------------------------+------------------------------------+-------------------+--------------------------------------+
| id | name | mac_address | fixed_ips |
+------------------------------------+------------------------------------+-------------------+--------------------------------------+
| 0b55c3b3-ae5f-4d03-899b- | | fa:16:3e:b5:1d:95 | {"subnet_id": "ab812ed5-1a4c-4b12 |
| f056d967942e | | | -859c-6c9b3df21642", "ip_address": |
| | | | "10.0.1.4"} |
| 2b7eceaf-8333-49cd-a7fe- | | fa:16:3e:59:b3:ef | {"subnet_id": "ab812ed5-1a4c-4b12 |
| aa101d5c9598 | | | -859c-6c9b3df21642", "ip_address": |
| | | | "10.0.1.1"} |
| 572ad59f- | dhcp_port_ab812ed5-1a4c-4b12-859c- | fa:16:3e:56:7f:2b | {"subnet_id": "ab812ed5-1a4c-4b12 |
| 5a15-4662-9fb8-f92a49389b28 | 6c9b3df21642 | | -859c-6c9b3df21642", "ip_address": |
| | | | "10.0.1.2"} |
| bf398883-c435-4cb2-8693-017a790825 | interface_RegionOne_ab812ed5-1a4c- | fa:16:3e:15:ef:1f | {"subnet_id": "ab812ed5-1a4c-4b12 |
| 9e | 4b12-859c-6c9b3df21642 | | -859c-6c9b3df21642", "ip_address": |
| | | | "10.0.1.7"} |
| 452b8ebf- | | fa:16:3e:1f:59:b2 | {"subnet_id": "055ec17a-5b64-4cff- |
| c9c6-4990-9048-644a3a6fde1a | | | 878c-c898427aabe3", "ip_address": |
| | | | "163.3.124.5"} |
| 8e77c6ab-2884-4779-91e2-c3a4975fdf | | fa:16:3e:3c:88:7d | {"subnet_id": "055ec17a-5b64-4cff- |
| 50 | | | 878c-c898427aabe3", "ip_address": |
| | | | "163.3.124.7"} |
+------------------------------------+------------------------------------+-------------------+--------------------------------------+
Associate the floating IP to instance1’s IP in net1.
$ neutron --os-region-name=CentralRegion floatingip-associate 0c031c3f-93ba-49bf-9c98-03bf4b0c7b2b 0b55c3b3-ae5f-4d03-899b-f056d967942e
Associated floating IP 0c031c3f-93ba-49bf-9c98-03bf4b0c7b2b
Verify floating IP is associated in RegionOne too.
$ neutron --os-region-name=RegionOne floatingip-list
+--------------------------------------+------------------+---------------------+--------------------------------------+
| id | fixed_ip_address | floating_ip_address | port_id |
+--------------------------------------+------------------+---------------------+--------------------------------------+
| b28baa80-d798-43e7-baff-e65873bd1ec2 | 10.0.1.4 | 163.3.124.7 | 0b55c3b3-ae5f-4d03-899b-f056d967942e |
+--------------------------------------+------------------+---------------------+--------------------------------------+
You can create topology in RegionTwo like what has been done in RegionOne.
