Module 7 terms

OUI (Organizationally Unique Identifier)

A 24-bit character sequence assigned by IEEE that appears at the beginning of a network interface's physical address and identifies the NIC's manufacturer.

Neighbor Discovery

A process whereby routers learn about all of the devices on their networks. On IPv4 networks, this process is managed by ARP with help from ICMP. On IPv6 networks, NDP (Neighbor Discovery Protocol) automatically detects neighboring devices and automatically adjusts when nodes fail or are removed from the network.

ARP

Address Resolution Protocol. An Internet protocol used to map an IP address to a MAC address. Defined in RFC 826.

Shared Memory

Deposits all frames into a common memory buffer, which all the ports on the switch share

Port-based memory

Frames are stored in queues that are linked to specific incoming and outgoing ports

Store and Forward Switching

Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame?

Fragment free Switching

a cut-through switching method that begins to forward data after receipt of the first 64 bytes of a frame

Fast-Forward Switching

a cut-through switching method that begins to forward data as soon as the destination address has been received

Cut Through Switching

a switching method that begins the forwarding process as soon as enough information has been received to make a forwarding decision

auto-MDIX

a technology that allows a switch or router interface to detect the required cable type (straight-through or crossover)