Ethernet
Ethernet is not a single protocol but an entire collection of different standards. These standards come from the IEEE and all of them start with 802.3 in their name. Ethernet is also pretty old, the first memo about Ethernet was written by Bob Metcalfe back in 1973.
Ethernet "lives" in the Physical and Data Link layers of the OSI Model. At the physical layer, Ethernet uses two types of media: copper and optical fiber.
Some additional information about Ethernet can be found in the following notes:
Links:
https://networklessons.com/cisco/ccna-routing-switching-icnd1-100-105/introduction-to-ethernet
Links to this page:
- ARP table
- Broadcast MAC address
- Career study advice
- EtherChannel - prerequisites for bundling
- Ethernet - role of FCS field
- Ethernet - speed and duplex mismatches
- Ethernet CSMA-CD
- Ethernet frame types
- Ethernet header
- Ethernet over IP (EoIP)
- GRE
- Interface - no carrier counter
- Interface - show interfaces counters explained
- Interface speed and bandwidth
- L2TPv3
- MAC address table - show command on Nexus device
- MAC address
- MPLS
- MTU - default interface MTU
- MTU
- MetroEthernet - VLAN design considerations
- MetroEthernet - Virtual Private LAN service
- MetroEthernet - Virtual Private Wire Service
- MetroEthernet
- Network - Example of communication, encapsulation, and decapsulation, between hosts
- OSPF - DR-BDR election priority of zero
- OSPF DR BDR election and neighbor adjacencies
- OSPF immediate hello packet
- OSPF network types
- OSPF point to point network type for Ethernet
- Physical layer - Copper medium
- Physical layer - carrier wave
- Physical layer - encoding
- PoE Passive
- PoE Standards-based
- PoE over Gigabit Ethernet
- PoE power sourcing equipment (PSE)
- PoE powered device (PD)
- PoE what is it
- Precision Time Protocol (PTP)
- Protocol Data Unit (PDU)
- QoS - CoS to DSCP and DSCP to CoS mapping
- Routing - l2transport
- STP changing link cost
- Security - spoofing
- Serial Interface default broadcast address
- Switch high availability options
- Switching - Media Access Control (MAC) addresses
- Switchport - IEEE 802.1q
- Switchport - ISL
- Switchport access
- Switchport trunk
- TCP - factors affecting segment size
- VXLAN access trunk port
- Virtual Private LAN Service (VPLS)
- WAN - edge equipment names and terminology