[rfe]Updating the segmentation id of network is failed

[Zhigang Li]

The users do not have a way to change the segmentation id when Network which network_type is vlan has been created.

When trying to update the segmentation id of network ,such as "neutron net-update --provider:segmentation_id=1020 my_network", there is a prompting to tell us that "Invalid input for operation: Plugin does not support updating provider attributes."

That meanings if the user changes the networking scheme,they have to delete all the vm , port and rebuild network with new segmentation id. That is too hard for the user. In some case the user don't allowed to delete the vm when they are using it.

[songqianxia (songlihui1947)]

I think it is reasonable, it is related to hardware property, admin should setup network topology before create network.

[JianGang Weng (weng-jiangang)]

I agree this request. Such as case like:
The VDC network design is often related to the real network. If some operators want to redesign their network, they would want to change the VLAN arrangement for the VDC and real network, In current version, It is too hard to complete this mission.