Ads
related to: ethernet access layer- Copper to Fiber
Connect 10Mbps, 100Mbps, 1G, 2.5G,
or 10G RJ45 Ethernet to Fiber.
- Serial to Fiber
Connect RS232, RS422, and RS485
Devices to Fiber Optic Cabling.
- Multimode to Single Mode
Convert Single Mode to Multimode
or extend a Multimode network.
- Managed Media Converters
AAA Security Services and
Secure Management Sessions.
- Copper to Fiber
Search results
Results From The WOW.Com Content Network
End-stations and servers connect to the enterprise at the access layer. Access layer devices are usually commodity switching platforms, and may or may not provide layer 3 switching services. The traditional focus at the access layer is minimizing "cost-per-port": the amount of investment the enterprise must make for each provisioned Ethernet ...
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 the Institute of Electrical and Electronics Engineers (IEEE).
The Ethernet physical layer evolved over a considerable time span and encompasses coaxial, twisted pair and fiber-optic physical media interfaces, with speeds from 1 Mbit/s to 400 Gbit/s. [49] The first introduction of twisted-pair CSMA/CD was StarLAN , standardized as 802.3 1BASE5. [ 50 ]
The channel access control mechanism relies on a physical layer multiplex scheme. The most widespread multiple access method is the contention-based CSMA/CD used in Ethernet networks. This mechanism is only utilized within a network collision domain, for example, an Ethernet bus network or a hub-based star topology network.
The IEEE 802.3 standard, which defines all Ethernet variants, for historical reasons still bore the title "Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications" until 802.3-2008, which uses new name "IEEE Standard for Ethernet".
Ethernet packet. The SFD (start frame delimiter) marks the end of the packet preamble. It is immediately followed by the Ethernet frame, which starts with the destination MAC address. [1] In computer networking, an Ethernet frame is a data link layer protocol data unit and uses the underlying Ethernet physical layer transport