how to use large ip range in one interface in one instance
hello I want use a instance for network testing, it simulate 2000 client with different ip address. In real server , i could assign 2000 ip address in one eth, then the testing tool could use them. but with openstack, i just know i could set fixipaddress with port, then assign the port to instance. Is there smart way could do like that openstack assign a subnet to a port ,then i define the ip in that subnet to the interface in the instance by my self? thank you very much
My openstack network setting is below 1.there are 2 network card in compute, one for oam, one for traffic. 2.i am using provider network with linux bridge. Binding each network card as flat/vlan 3.network details
(openstack) network list
+--------------------------------------+-----------------+--------------------------------------+
| ID | Name | Subnets |
+--------------------------------------+-----------------+--------------------------------------+
| 933f4fdb-9c58-454f-ae09-9b79222e6aa0 | oam | 975e3f5a-e426-435a-83fe-fba5e8d96313 |
| fc154913-a365-4477-af6b-66181a6d8b68 | traffic-vlan888 | 9f1823a6-32b2-42af-aead-58889bd33afa |
+--------------------------------------+-----------------+--------------------------------------+
(openstack) network show oam
+---------------------------+--------------------------------------+
| Field | Value |
+---------------------------+--------------------------------------+
| admin_state_up | UP |
| availability_zone_hints | |
| availability_zones | nova |
| created_at | 2017-02-08T14:16:46Z |
| description | |
| id | 933f4fdb-9c58-454f-ae09-9b79222e6aa0 |
| ipv4_address_scope | None |
| ipv6_address_scope | None |
| mtu | 1500 |
| name | oam |
| port_security_enabled | True |
| project_id | a981dc41fca74b0ea2b66ef0140fb789 |
| project_id | a981dc41fca74b0ea2b66ef0140fb789 |
| provider:network_type | flat |
| provider:physical_network | oam |
| provider:segmentation_id | None |
| revision_number | 6 |
| router:external | Internal |
| shared | True |
| status | ACTIVE |
| subnets | 975e3f5a-e426-435a-83fe-fba5e8d96313 |
| tags | [] |
| updated_at | 2017-02-08T15:05:35Z |
+---------------------------+--------------------------------------+
(openstack) network show traffic-vlan888
+---------------------------+--------------------------------------+
| Field | Value |
+---------------------------+--------------------------------------+
| admin_state_up | UP |
| availability_zone_hints | |
| availability_zones | nova |
| created_at | 2017-02-08T15:36:12Z |
| description | |
| id | fc154913-a365-4477-af6b-66181a6d8b68 |
| ipv4_address_scope | None |
| ipv6_address_scope | None |
| mtu | 1500 |
| name | traffic-vlan888 |
| port_security_enabled | True |
| project_id | a981dc41fca74b0ea2b66ef0140fb789 |
| project_id | a981dc41fca74b0ea2b66ef0140fb789 |
| provider:network_type | vlan |
| provider:physical_network | traffic |
| provider:segmentation_id | 888 |
| revision_number | 5 |
| router:external | Internal |
| shared | True |
| status | ACTIVE |
| subnets | 9f1823a6-32b2-42af-aead-58889bd33afa |
| tags | [] |
| updated_at | 2017-02-08T15:39:37Z |
+---------------------------+--------------------------------------+
(openstack)
A Neutron port has a single IP address, not a range, but I believe you can just add IP addresses to the interfaces inside the instance. I.e. inside the instance:
sudo ip a add 10.100.100.100/24 dev eth0etc. (just tried it; works). You have to ensure there are no address overlaps with DHCP.hello Bernd thank you for updating. I found a workaround for it