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  2. Power over Ethernet - Wikipedia

    en.wikipedia.org/wiki/Power_over_Ethernet

    CDP is also responsible for dynamically communicating the Voice VLAN value from the Cisco switch to the Cisco VoIP Phone. Under Cisco's pre-standard scheme, the PSE (switch) will send a fast link pulse (FLP) on the transmit pair. The PD (device) connects the transmit line to the receive line via a low-pass filter. The PSE gets the FLP in return.

  3. Cisco Catalyst - Wikipedia

    en.wikipedia.org/wiki/Cisco_Catalyst

    The inside of a Cisco 1900-series switch. Catalyst is the brand for a variety of network switches, wireless controllers, and wireless access points sold by Cisco Systems.While commonly associated with Ethernet switches, a number of different types of network interfaces have been available throughout the history of the brand.

  4. Cisco Catalyst 1900 - Wikipedia

    en.wikipedia.org/wiki/Cisco_Catalyst_1900

    The inside of a Cisco 1900-series switch. The Cisco Catalyst 1900 is a 19" rack mountable, managed (configurable) 10BASE-T Ethernet switch with 100BASE-TX/100BASE-FX uplink ports. This product was popular in small office networks because of its features and price. This switch was sold until 2002, reaching end of life (EOL) in 2007 and is no ...

  5. List of 3Com products - Wikipedia

    en.wikipedia.org/wiki/List_of_3Com_products

    Switch 4200G - Gigabit. 12, 24 or 48 Gb ports including 4 Dual Personality Ports (2 × Gb or SFPs). 12-Port module has one 10-Gigabit expansion slot; other units have two 10-Gigabit expansion slots. One PoE model. Units can directly take a 10GE XENPAK, or can receive a 1-Port 10GE XFP module. Supports Layer 2 switching and Layer 3 static routing.

  6. Network switch - Wikipedia

    en.wikipedia.org/wiki/Network_switch

    Segmentation involves the use of a switch to split a larger collision domain into smaller ones in order to reduce collision probability and to improve overall network throughput. In the extreme case (i.e. micro-segmentation), each device is directly connected to a switch port dedicated to the device. In contrast to an Ethernet hub, there is a ...

  7. List of Cisco products - Wikipedia

    en.wikipedia.org/wiki/List_of_Cisco_products

    Cisco IPS Manager Express (for multiple IPS devices) Cisco Identity Services Engine (ISE) Panoptica; PostOffice protocol (not to be confused with POP3, SMTP, or other mail delivery protocols). It is a Cisco proprietary protocol that runs over UDP on port 45000. [23] It provides a communications vehicle between the sensors and the Director platform.

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