Ask Your Question

Is there a use case then a network with no subnet is used? [closed]

asked 2013-12-06 08:53:26 -0500

George Peristerakis gravatar image

When creating a instance, I could add a network without a subnet. Which to me this seams like a bug.

Is there a use case when having a network without a subnet is useful?

edit retag flag offensive reopen merge delete

Closed for the following reason the question is answered, right answer was accepted by dheeru
close date 2013-12-06 22:35:49.670234

2 answers

Sort by ยป oldest newest most voted

answered 2013-12-06 09:54:27 -0500

dheeru gravatar image

I definitely understand your perspective. In logical sense your statement make sense. At the same it is not breaking any functionality. This is software defined networking. Network is associated with subnet. It is giving the flexibility for us associate and dis-associate any sub-net we want at later time:)

edit flag offensive delete link more

answered 2013-12-06 11:05:10 -0500

Yes I agree this is not breaking functionality, we have enhanced our network manager to use this feature to add another L3 segment and associate it back to the base Project Network (VLAN) thus extend the address range by 2x for that Project. If you are on say a standard /24 network and you max out the 254 hosts, our network manager adds another network (254 more hosts) to the project and extend the address range and associates back to the base network.

edit flag offensive delete link more

Get to know Ask OpenStack

Resources for moderators

Question Tools

1 follower


Asked: 2013-12-06 08:53:26 -0500

Seen: 78 times

Last updated: Dec 06 '13