International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 04 | Apr -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
CONFIGURATION SANITY CHECK FOR VXLAN Soumosir Dutta, Nitish Garg, Nalini N School of Computing Science and Engineering, VIT University, Vellore, TN, India ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract: With the increasing datacenter complexity there is 2. Related work need of various advancement in technology to support the demand by the production environment. Optimal utilization of resources in layer 2 or datalink layer requires vlan for separation of broadcast domain. Vmobility is required in modern datacenters to have the server utilized to use many VMs at a time depending upon the requirements. There has to be moves for VMs between data centers for efficient utilization of RAM, physical memory, power, bandwidth of the links hence a layer 2 tunneling technology has to be implemented for users in one VM to be logically in the same domain even if it’s physical VM has been moved.Advancement upon the VXLAN are to be performed for better utilization of the network resources which is discussed further.
2.1 VLAN Computer networks which are local to a specific region is segregated by the local area network. They are mainly used to interconnect computers or servers within a limited reach like that of a college network or company inter network. They architecture of a LAN mainly revolve around connecting switches as networking device which perform both data link or layer 2 and network layer or layer 3 functionalities. The devices which performs L2 frames forwarding are primarily known as switches and those responsible for L3 packet forwarding are known as routers. In production network the L3 forwarding devices are named vendor specific. These networking devices has a combination of hardware forwarding agent known as ASIC and a software which runs on the CPU block for programming the logic which determines hardware forwarding. The ASIC contains the hardware chip which are responsible for data forwarding in bits if seen by modular point of view.
Keywords: Multi-Layer switches, VLAN, VXLAN, VM, VMobility, VTEP
1. Introduction Digitization had lead to increase in data to be processed and stored hence the importance of data center design has been of prime importance. Technologies are implemented to make a network more efficient and have optimal use of resources in data center. Vlan has been introduced for making multiple broadcast domain to function under the same switch. VMobility is moving a vm from one server to another and is done for utilization of resources like RAM, memory, power and for host mobility in a network. For mobility tunneling is required for host too have the perception of same network hence VXLAN is being introduced. VXLAN is the overlay technology which provides layer 2 communication over a layer 3 network. Network resources like the Vteps and floodlist in VXLAN had to be managed so as to have less outage and save time troubleshooting configurations in networking devices.A tool has to be implemented for configuration management and improving the management in production network scenarios.
Š 2017, IRJET
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The OSI standard has separated the networking viewpoint into seven layers in which the layer 1 or physical layer has transmission units as bits and consists of cabling standards. Some examples are the coaxial cable which are used mostly in datacenters and also Shielded twisted pair and unshielded twisted pair which gives better reliability. Data link layer or layer 2 does the forwarding of frames and the forwarding is done by the networking devices like hub or a switch. We will be only concentrating upon switch as hub is beyond our scope. The switch performs its operation by the mac address table in it. Any packet that hits the switch is decapsulated and the destination mac address is seen and matched with the mac address table in switch if present and then forwarded to the port or physical interface present in it or to the cpu as per the logic and rules defined. A broadcast message is however forwarded to all the ports except for the incoming port. A domain where the broadcast messages gets forwarded is known as broadcast message. As switch
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