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A switch virtual interface (SVI) represents a logical layer-3 interface on a switch. VLANs divide broadcast domains in a LAN environment. Whenever hosts in one VLAN need to communicate with hosts in another VLAN, the traffic must be routed between them. This is known as inter-VLAN routing.
Where there is a need for a great deal of analysis of network performance and security, switches may be connected between WAN routers as places for analytic modules. Some vendors provide firewall, [21] [22] network intrusion detection, [23] and performance analysis modules that can plug into switch ports. Some of these functions may be on ...
In this implementation, each router within the network participates in the virtual routing environment in a peer-based fashion. While simple to deploy and appropriate for small to medium enterprises and shared data centers, VRF Lite does not scale to the size required by global enterprises or large carriers, as there is the need to implement ...
Cisco Technology Handbook: SDLC and Derivatives: SDN: Software-defined networking Architecture Software-defined networking: SFD: Start-of-frame delimiter (Ethernet, HDLC, etc.) Link layer IEEE 802.3 (Ethernet), or RFC 2687 (HDLC), for examples SFP: Small form-factor pluggable Hardware Seagate Specification: S-HTTP: Secure HTTP (rarely used)
NIC—Network Interface Controller or Network Interface Card; NIM—No Internal Message; NIO—Non-blocking I/O; NIST—National Institute of Standards and Technology; NLE—Non-Linear Editing system; NLP—Natural Language Processing; NLS—Native Language Support; NMI—Non-Maskable Interrupt; NNTP—Network News Transfer Protocol; NOC ...
It is common for the operating system kernel to maintain a table of virtual network interfaces in memory. This may allow the system to store and operate on such information independently of the physical interface involved (or even whether it is a direct physical interface or for instance a tunnel or a bridged interface).
Virtual eXtensible LAN (VXLAN) is a network virtualization technology that uses a VLAN-like encapsulation technique to encapsulate OSI layer 2 Ethernet frames within layer 4 UDP datagrams, using 4789 as the default IANA-assigned destination UDP port number, [1] although many implementations that predate the IANA assignment use port 8472.
A virtual circuit (VC) is a means of transporting data over a data network, based on packet switching and in which a connection is first established across the network between two endpoints. The network, rather than having a fixed data rate reservation per connection as in circuit switching , takes advantage of the statistical multiplexing on ...