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In computer networking, a unicast flood occurs when a switch receives a unicast frame and the switch does not know that the addressee is on any particular switch port. Since the switch has no information regarding which port, if any, the addressee might be reached through, it forwards the frame through all ports aside from the one through which the frame was received.
In this case the switch marks the frame for flooding and sends it to all forwarding ports within the respective VLAN. Forwarding this type of traffic can create unnecessary traffic that leads to poor network performance or even a complete loss of network service. [6] This flooding of packets is known as a unicast flooding. [7] [5]
As broadcasts and multicasts are forwarded by switches out of every port, the switch or switches will repeatedly rebroadcast broadcast messages and flood the network. Since the layer-2 header does not support a time to live (TTL) value, if a frame is sent into a looped topology, it can loop forever.
In computer networking, a media access control attack or MAC flooding is a technique employed to compromise the security of network switches.The attack works by forcing legitimate MAC table contents out of the switch and forcing a unicast flooding behavior potentially sending sensitive information to portions of the network where it is not normally intended to go.
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The loop creates broadcast storms as broadcasts and multicasts are forwarded by switches out every port, the switch or switches will repeatedly rebroadcast the broadcast messages flooding the network. [1] Since the layer-2 header does not include a time to live (TTL) field, if a frame is sent into a looped topology, it can loop forever.
A broadcast vs. cable vs. streaming cage match? Changes over the past decade are pointing toward a brave new world of TV viewing, but what will it be? A broadcast vs. cable vs. streaming cage match?
Flooding is used in computer network routing algorithms in which every incoming packet is sent through every outgoing link except the one it arrived on. [ 1 ] Flooding is used in bridging and in systems such as Usenet and peer-to-peer file sharing and as part of some routing protocols , including OSPF , DVMRP , and those used in ad-hoc wireless ...
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related to: switch flooding vs broadcast spreader