09-28-2015 02:46 AM
Does anyone know if it's possible to have nexus 1Kv with running one single VSM, supporting two hypervisor VEM at the same time? one on KVM Compute node and one VMware, and still be able to do VXLAN between any vms with openstack?
Thanks
09-28-2015 07:15 AM
Hi Luca,
The purpose of OpenStack is to allow the Dashboard to give you an interface to multiple hypervisors while OpenStack remains hypervisor agnostic. The interaction between OpenStack and the hypervisors works through the API's and REST plugins. The Nexus 1000v for KVM is intended to do the same thing as it supports heterogeneous hypervisors and the VEM module on the host interacts with the neutron plugin. N1k for OpenStack does support VXLAN. Here is a link to the N1k Openstack configuration and installation guides for your reference.
Configuration Guides: http://www.cisco.com/c/en/us/support/switches/nexus-1000v-kvm/products-installation-and-configuration-guides-list.html
Install Guides: http://www.cisco.com/c/en/us/support/switches/nexus-1000v-kvm/products-installation-guides-list.html
Main Docs page: http://www.cisco.com/c/en/us/support/switches/nexus-1000v-kvm/tsd-products-support-series-home.html
09-29-2015 01:31 AM
Hi John, thanks for you Answer
i think that your're wrong because N1Kv support VXLAN with KVM in an openstack enviroment. (for example http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/kvm/config_guide/vxlan/521sk122/b-Cisco-N1KV-KVM-VXLAN-Config-521SK122/b-Cisco-N1KV-KVM-VXLAN-Config-521SK122_chapter_010.html )
anyway, my question is not related to openstack as orchestrator, but if i can use N1Kv on KVM and Vmware Hypervisors at the same time with openstack dashboard.
If yes, i should have 2 VSM (one for each hypervisor) or just 1 that controll every VEM plugin (not consider the redundancy)?
Also, if i have to use 2 VSM, the VXLAN traffic from a VM on kvm and once in Vmware are able to comunicate?
Thanks
09-29-2015 06:35 AM
Hi Luca,
Sorry, I must have misunderstood your original question. In regards to the VXLAN among multiple environments, if you're using multicast mode then I don't know of any reasons why it won't work. Unicast mode will not work as it doesn't work across multiple DVS'.
I searched through the config docs and I don't see a way to have N1k for KVM and VMware to both integrated with Horizon. It looks like N1k for KVM will integrated with horizon, while N1k for VMware will integrate with Virtual Center. While it may be possible to do this, I don't see anywhere it's documented.
I don't see anything saying it won't work. The purpose of VXLAN in multicast mode is to allow communication across multiple DVS' using a BGP control plane. Since VXLAN uses VTEPs for the MAC in IP encapsulation, it shouldn't matter which VTEP, either KVM or VMware, that encapsulates and decapsulates the packet.
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