ONOS is an Opensource SDN controller targeted towards Service providers. I had provided a brief overview of ONOS in 1 of my earlier blog. I tried out ONOS software recently and in this blog, I will share my experiences.
Following picture from ONOS architecture guide shows the different layers of ONOS at high level.
This is a continuation of my previous blog on Group based policy(GBP). In this blog, I will cover the GBP features in Opendaylight helium release, Use-cases that are published in the Opendaylight wiki as well as different usecase that I tried out.
Following diagram is from Opendaylight GBP wiki:
There is lot of work going on in both Openstack and Opendaylight projects on Group based policy and I will try to capture my learnings in the next few blogs.
Group based policy(GBP) is an abstracted way of specifying interactions between the applications rather than using infrastructure specifics. In the networking context, for example, rather than using terms like ip address, vlan, port numbers, the policies are specified in much higher level language in terms of what the application needs. Currently Group based policy is targeted for Networking. Eventually, it will be applicable to Compute and Storage as well. I kind of see GBP as Open source variant of Cisco’s ACI model, multiple vendors are involved in the development of GBP.
In Openstack Neutron context, following are the goals of Group based policy.
Opendaylight Helium is the second release after Hydrogen and it was released late September 2014. Earlier, I was using Opendaylight Hydrogen release and recently, I tried out Opendaylight Helium release. In this blog, I have shared some of my experiences with Helium.
Following are some important additions to Helium compared to Hydrogen. For more details, please refer Opendaylight webpage.
I came across few recent Opensource projects which I found them to be interesting. In this blog, I will cover some details on OPNFV, Openconfig, ONOS. There is no relation between the 3 projects, the common thing is all the 3 projects are focussed on Networking and Cloud and all are relatively new.
OPNFV is an Opensource project under Linux foundation. The goal is to create a Opensource reference platform for developing NFV applications. In 1 of my earlier blogs on NFV, I covered overview of NFV and the ETSI NFV model. The goal of the OPNFV project is to create a reference implementation using the model proposed by ETSI. OPNFV’s plan is to leverage the work done in other Opensource projects like Openstack, Opendaylight, Openvswitch, KVM, Linux kernel, DPDK. Even though OPNFV can work with other Cloud OS and SDN controllers, the goal for the first release is to use the most popular Cloud OS, SDN controller and hypervisor mentioned above. Following picture from OPNFV illustrates the blocks that OPNFV will focus on from ETSI NFV reference model.
Continue reading Recent Networking Opensource projects – OPNFV, Openconfig, ONOS
Recently, I came across this tool called Vagrant that eases the creation and sharing of VM work environment. I played with it and found it very useful. Vagrant integrates with VM hosting providers like Virtualbox, Vmware and AWS. Different devops tools like Chef, Puppet, Ansible are integrated with Vagrant. In this blog, I will cover high level overview and use cases of Vagrant, Vagrant workflow and an application that I created using Vagrant. In the application, I have created a Vagrant Opendaylight(ODL) box using Ubuntu 12.04 as baseline. I will describe the steps that I followed to create the Vagrant ODL box and how it can be used.
Vagrant Use cases:
Workflow:
Continue reading Vagrant – Overview and Opendaylight Vagrant Image
Cisco’s acquisition of Tail-f prompted me to look deeper into what Tail-f does. That in-turn made me dig deeper into Netconf and Yang. Netconf is a device configuration and management protocol and Yang is a modeling language that’s used by Netconf. Yang modeling can also be used outside Netconf’s context. From looking at the history behind Netconf and Yang, I realized that Network management as a whole was a widely ignored topic for quite sometime. The current Network management techniques used by Operators seems to be very arcane and the recent SDN wave has triggered a renewed interest in simplifying Network management. In this blog, I will cover the following:
Recently, I saw a lot of press on Cisco’s Opflex protocol that allows a declarative policy model to control a physical or virtual device. There were discussions around if the Opflex protocol would replace Ovsdb and Openflow. Within Openstack, there is a new project called Congress that allows for creating a policy framework within Openstack. This blog is my attempt to get into more details on Congress and Opflex and explain the relationship between them. This is mostly information gathered from different references that I have listed in the end.
Congress is a new Openstack project that is used to enforce compliance within the cloud environment. The end goal would be to integrate Congress with other cloud orchestration software as well. Compliance could be needed because of Government regulations, contracts between organizations, SLA enforcement etc. Following picture illustrates the need for Congress.
In this blog, I will cover the following aspects of Openstack Networking.
In my previous blog, I covered basics of Network Virtualization and overview of commercial solutions available today. The most popular Open source Network Virtualization solution available today is Opendaylight. With the hydrogen release of ODL, ODL can be downloaded in 3 flavors: Base edition, Network Virtualization edition and Service provider edition. Network Virtualization edition adds components like Ovsdb, Opendove, VTN as well as Openstack integration. Ovsdb, Opendove and VTN are different approaches to provide multi-tenant networks. Ovsdb team has put in a nice set of hands-on tutorials for folks wanting to try out Openstack+ODL. I recently tried this out and I was very impressed. In this blog, I will cover my experiences in trying out hands-on Openstack+ODL integration.
Continue reading Network Virtualization – Openstack+ODL integration
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