GitHub user nitin-maharana opened a pull request:
https://github.com/apache/cloudstack/pull/1804
CLOUDSTACK-9639: Unable to create shared network with vLan isolation
Description:
=========
Create shared network fails with Error.
While creating a shared network it fails to create with Error "The new IP
range you have specified has overlapped with the guest network in the zone:
XYZ. Please specify a different gateway/netmask"
Steps to Reproduce:
===============
1. Create an isolated network with a subnet eg: 10.1.1.0.24
2. Create a shared network with the same subnet but different VLAN, we
should observe this issue.
Expected Behaviour:
===============
It shouldn't restrict the creation of the guest network with the same
subnet as long as they are segmented by VLAN.
ACTUAL BEHAVIOR:
===============
It doesn't allow the creation of shared guest networks if there is any
isolated guest network using the same subnet although it allows using the same
subnet in multiple shared networks.
Cause:
=====
The issue is happening because, when Shared network is getting created we
are checking if there is any guest network already implemented with the same
CIDR and throwing the error without checking if they are having same VLAN also.
Creating the same CIDR shared network with different VLAN should be allowed.
Fix:
===
When creating a shared network, if there is any existing guest network with
the same CIDR, we check if they are having the same VLAN, if they are in same
VLAN, then we don't allow creating it. If they are in the same CIDR with
different VLAN then we allowing to create the network.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Accelerite/cloudstack CLOUDSTACK-9639
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/cloudstack/pull/1804.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1804
----
commit fc4434846433f8df64998614deb6c1b4b40992da
Author: Nitin Kumar Maharana <nitinkumar.mahar...@accelerite.com>
Date: 2016-12-01T07:13:49Z
CLOUDSTACK-9639: Unable to create shared network with vLan isolation
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