<div dir="ltr"><div><div><div>Hi,<br><br></div>I'm running <span tabindex="-1" id=":26y.1" style="" class="">openstack</span> (<span tabindex="-1" id=":26y.2" style="" class="">IceHouse</span>) configured for provider networks.<br><br></div>For a tenant <span tabindex="-1" id=":26y.3" style="" class="">i've</span> created the network/ <span tabindex="-1" id=":26y.5" style="" class="">subnet</span> using the below commands and everything works as expected.<br><br>neutron net-create --tenant-id f557a3f5303d4e7c9218c5539456eb37 --provider:physical_network=physnet2 --provider:network_type=<span tabindex="-1" id=":26y.6" style="" class="">vlan</span> --provider:segmentation_id=315 <span tabindex="-1" id=":26y.7" style="" class="">ih</span>-<span tabindex="-1" id=":26y.8" style="" class="">lwr</span>-<span tabindex="-1" id=":26y.9" style="" class="">ci</span>-provider-vlan315<br><br>neutron <span tabindex="-1" id=":26y.10" style="" class="">subnet</span>-create <span tabindex="-1" id=":26y.11" style="" class="">Openstack</span>-External-vlan55 <a href="http://10.82.42.0/24">10.82.42.0/24</a> --name <span tabindex="-1" id=":26y.12" style="" class="">Openstack</span>-External-vlan55-<span tabindex="-1" id=":26y.13" style="" class="">subnet</span> --no-gateway --host-route destination=<a href="http://0.0.0.0/0">0.0.0.0/0</a>,<span tabindex="-1" id=":26y.14" style="" class="">nexthop</span>=10.82.42.1 --allocation-pool start=10.82.42.223,end=10.82.42.254<br><br></div>Now my questions/ use cases are:<br><ol><li>For a 2nd tenant, can i map it to the same <span tabindex="-1" id=":26y.15" style="" class="">subnet</span> created for tenant 1? If the answer is to create same net/ <span tabindex="-1" id=":26y.16" style="" class="">subnet</span> (same segmentation_id - i.e <span tabindex="-1" id=":26y.17" style="" class="">vlans</span>) for tenant 2, how will <span tabindex="-1" id=":26y.18" style="" class="">dhcp</span> agent avoid <span tabindex="-1" id=":26y.19" style="" class="">IP</span> duplication.</li><li>Is having multiple tenants pointing to same provider network (net/ <span tabindex="-1" id=":26y.20" style="" class="">subnet</span>/ <span tabindex="-1" id=":26y.21" style="" class="">vlan</span>) is not possible what options do i have? Only to create a new net/ <span tabindex="-1" id=":26y.22" style="" class="">subnet</span> based on new <span tabindex="-1" id=":26y.23" style="" class="">vlan</span> and allocated to tenant 2?</li></ol><p><br></p><p>Cheers,</p><p>Dani<br></p><p><br></p></div>