You mean, once a user allocates a VLAN’s (let’s say tag 1), in all of the switches this VLAN tag is reserved?
On Tue, Feb 28, 2017 at 12:48 PM, Dag Sonstebo <dag.sonst...@shapeblue.com> wrote: > Hi Rafael, > > Keep in mind for an advanced zone the broadcast domain for VLANs is the > zone rather than the POD, i.e. VMs in the new POD would use the same VLANs > as the previous VMs in the original POD. > > Regards, > Dag Sonstebo > Cloud Architect > ShapeBlue > > On 28/02/2017, 16:16, "Rafael Weingärtner" <rafaelweingart...@gmail.com> > wrote: > > Hi folks, > I was checking some information regarding ACS advanced networking > deployment mode, and I ran into this figure [1]. This made me wonder, > what > would happen with the following scenario. > > Let`s say I have a similar scenario as the one depicted in figure [1], > a > set of pods with a set of clusters that have a set of hosts. Each host > in a > pod is linked directly using a Layer-2 switch. Let’s assume there exist > network/aggregation layers that are configured properly and provide > access > to VMs in the cloud using the public IP net. Let’s also assume that the > public IP net is 1.1.1.0/24; the management and storage networks are > on > isolated networks and are properly set up (Assume also that we are > using > the advanced networking mode). > > Now, I create a guest network 2.2.2.0/24. When I deploy a user VM, > ACS will > deploy a VR (let’s call x) with an IP (1.1.1.1) in the public net, and > other on the guest network (2.2.2.1). Then, this VR(x) will execute the > firewalling/forwarding for my newly created user VM. > > Let’s now imagine that I keep deploying user VMs to a point in which > the > POD gets full. The next VM I create ACS will have to deploy in other > PODs > of the environment. Because this new user VM will be in a different > POD, > the communication with other user VMs is not straightforward anymore > (not a > matter of using the same VLAN and net). What will ACS do to link users > VMs > that are on the same virtual network, but deployed in different PODs? > > Will it deploy other VR(y) with an IP (let's say 1.1.1.2) on the new > POD > and create a route between VR(x) and VR(y) using the public network, so > that the communication for VMs in network 2.2.2.0/24 is transparent? > > http://docs.cloudstack.apache.org/projects/cloudstack- > administration/en/4.8/_images/network-setup-zone.png > > -- > Rafael Weingärtner > > > > dag.sonst...@shapeblue.com > www.shapeblue.com > 53 Chandos Place, Covent Garden, London WC2N 4HSUK > @shapeblue > > > > -- Rafael Weingärtner
