Menu Close

What is the difference between OTV and VXLAN?

What is the difference between OTV and VXLAN?

Well VXLAN is extending the VLANs or layer 2 traffic within the datacenter while OTV is the extension of the layer 2 Traffic across the datacenter. Cisco is using the concept of VXLAN in ACI infrastructure for the datacenter environment and also used in the SDA infrastructure in Campus or Enterprise networks.

What is the difference between VXLAN and EVPN?

Ethernet VPNs (EVPNs) enable you to connect groups of dispersed customer sites using Layer 2 virtual bridges, and Virtual Extensible LANs (VXLANs) allow you to stretch Layer 2 connectivity over an intervening Layer 3 network, while providing network segmentation like a VLAN, but without the scaling limitation of …

What is OTV technology?

Introduction. OTV is a MAC-in-IP method that extends Layer 2 connectivity across a transport network infrastructure. OTV uses MAC address-based routing and IP-encapsulated forwarding across a transport network to provide support for applications that require Layer 2 adjacency, such as clusters and virtualization.

What is Lisp and VXLAN?

Locator ID Separation Protocol (LISP) is a network architecture and protocol that implements the use of two namespaces instead of a single IP address: VXLAN is a MAC-in-UDP encapsulation method that is used in order to extend a Layer 2 or Layer 3 overlay network over a Layer 3 infrastructure that already exists.

Is OTV Cisco proprietary?

Overlay transport virtualization (OTV) is a Cisco proprietary protocol for relaying layer 2 communications between layer 3 computer networks.

Why VXLAN is required?

VXLAN makes it easier for network engineers to scale a data center or cloud computing environment, while still being able to isolate tenant services. In a multi-tenant environment, each tenant requires its own logical network, which in turn, requires its own Network Identification (NID).

Is VXLAN encrypted?

The VXLAN traffic over internet is unencrypted and prone to data compromise. Securing VXLAN based overlay network using SSH tunnel encrypts the data, thus protecting its integrity.

Is OTV supported on Nexus 9000?

The Nexus 9000 switches run NX-OS same as Nexus 7000 and banking on key features like ACI (Application Centric Infrastructure) for allowing the switches to participate in the SDN framework….NEXUS 7K switches vs NEXUS 9K switches.

OTV and LISP Supported Not Supported

What is VXLAN Cisco?

VXLAN is a MAC in IP/UDP(MAC-in-UDP) encapsulation technique with a 24-bit segment identifier in the form of a VXLAN ID. When deployed as a VXLAN gateway, Cisco Nexus 7000 switches can connect VXLAN and classic VLAN segments to create a common forwarding domain so that tenant devices can reside in both environments.

What is OTV and LISP?

OTV provides a way to extend Ethernet networks between data centers with some safety mechanisms for operational integrity. LISP requires the network to be aware of every server, physical or virtual, and to modify network routing as the system and its IP address moves within the network.

Is VXLAN a standard?

VXLAN–The Essentials VXLAN is a VLAN extension technology that encapsulates the standard Layer 2 Ethernet frames within IP, specifically using UDP port 4789 assigned by the Internet Assigned Numbers Authority (IANA).

While both protocols address L2 connectivity across L3 networks, VXLAN also addresses the exhaustion of the VLAN address space in larger networks (especially service provider networks). This is an issue that OTV does not try to address.

Can VXLAN be used as DCI transport?

Here’s a document which describes the use of VXLAN as DCI transport: Cisco Application Centric Infrastructure Dual-Fabric Design Guide White Paper – Cisco My take is that things aren’t looking too good for OTV. I imagine VXLAN (or whatever comes after it) will be the dominate overlay technology.

Is it possible to connect VXLAN with other networks?

Since VXLAN is based on a BGP control plane, it is relatively easy to use already established methods of BGP redistribution to connect the VXLAN fabric with some other network.

What is the difference between Aci and VXLAN?

(As someone mentioned earlier, ACI is automation on top of a VXLAN fabric.) Regarding your question about how to get VXLAN traffic to “the outside,” there are a number of different designs that provide a way for hosts connected to a VXLAN fabric access to external L3 networks.

Posted in Blog