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  2. Loopback - Wikipedia

    en.wikipedia.org/wiki/Loopback

    This is called a loopback test and can be performed within a modem or transceiver by connecting its output to its own input. A circuit between two points in different locations may be tested by applying a test signal on the circuit in one location, and having the network device at the other location send a signal back through the circuit. If ...

  3. IEEE 802.1ag - Wikipedia

    en.wikipedia.org/wiki/IEEE_802.1ag

    IEEE 802.1ag is an amendment to the IEEE 802.1Q networking standard which introduces Connectivity Fault Management (CFM).This defines protocols and practices for the operations, administration, and maintenance (OAM) of paths through 802.1 bridges and local area networks (LANs).

  4. Ethernet Configuration Testing Protocol - Wikipedia

    en.wikipedia.org/wiki/Ethernet_Configuration...

    Ethernet Configuration Testing Protocol is a diagnostic protocol included in the Xerox Ethernet II specification. [1] Functionality of the protocol is similar to that offered by ping but it operates at the data link layer as opposed to the network layer. Ethernet Configuration Testing Protocol was implemented on DEC hosts and Cisco routers. [2]

  5. Y.1564 - Wikipedia

    en.wikipedia.org/wiki/Y.1564

    ITU-T Y.1564 is designed to serve as a network service level agreement (SLA) validation tool, ensuring that a service meets its guaranteed performance settings in a controlled test time, to ensure that all services carried by the network meet their SLA objectives at their maximum committed rate, and to perform medium- and long-term service testing, confirming that network elements can properly ...

  6. Reserved IP addresses - Wikipedia

    en.wikipedia.org/wiki/Reserved_IP_addresses

    Used for loopback addresses to the local host [1] 169.254.0.0/16 ... Used for benchmark testing of inter-network communications between two separate subnets [9]

  7. Network interface device - Wikipedia

    en.wikipedia.org/wiki/Network_interface_device

    This allows the company to test the line from the central telephone exchange, without the need to have test equipment at the customer site. The telephone company usually has the ability to remotely activate loopback, without even needing personnel at the customer site. When looped back, the customer equipment is disconnected from the line.

  8. IEEE 802.3 - Wikipedia

    en.wikipedia.org/wiki/IEEE_802.3

    IEEE 802.3 is a working group and a collection of standards defining the physical layer and data link layer's media access control (MAC) of wired Ethernet.The standards are produced by the working group of Institute of Electrical and Electronics Engineers (IEEE).

  9. Crossover cable - Wikipedia

    en.wikipedia.org/wiki/Crossover_cable

    Ethernet crossover cable Rollover cable A loopback is a type of degraded "one side crosslinked connection" connecting a port to itself, usually for test purposes.

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