Public bug reported: In our environment we have multiple sites, each with their own flat provider networks. We also have a centralised neutron-server, but each site runs their neutron-dhcp-agent service.
I've been looking to upgrade some networks to MTU 9000, keeping others as is. What I want to do is for some neutron-dhcp-agents to dish out DHCP with MTU 9000 to the VMs. >From the documentation >(https://docs.openstack.org/mitaka/networking-guide/config-mtu.html), it seems >like the right way to go is to set `global_physnet_mtu = 9000` and, for all other networks (except mtu 9000 one) `physical_network_mtus = network1:1500,network2:1500` If I am doing this right, I find the approach to be a bit problematic: 1) It is inconsistent. Creation of network is via API but setting is in a config file. It would be nice to have API able to do both. 2) If a site provider creates a new provider network, it will be defaulted to 9000 unless a corresponding change is made in the config file. I am wondering if there is any reason for the current behaviour, and if it is possible to have MTUs set via API / DB. ** Affects: neutron Importance: Undecided Status: New -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1751188 Title: neutron mtu setting in database for provider networks Status in neutron: New Bug description: In our environment we have multiple sites, each with their own flat provider networks. We also have a centralised neutron-server, but each site runs their neutron-dhcp-agent service. I've been looking to upgrade some networks to MTU 9000, keeping others as is. What I want to do is for some neutron-dhcp-agents to dish out DHCP with MTU 9000 to the VMs. From the documentation (https://docs.openstack.org/mitaka/networking-guide/config-mtu.html), it seems like the right way to go is to set `global_physnet_mtu = 9000` and, for all other networks (except mtu 9000 one) `physical_network_mtus = network1:1500,network2:1500` If I am doing this right, I find the approach to be a bit problematic: 1) It is inconsistent. Creation of network is via API but setting is in a config file. It would be nice to have API able to do both. 2) If a site provider creates a new provider network, it will be defaulted to 9000 unless a corresponding change is made in the config file. I am wondering if there is any reason for the current behaviour, and if it is possible to have MTUs set via API / DB. To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1751188/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
