What is Layer 3?

Layer three refers to the 0.33 layer of the Open Systems Interconnection (OSI) Model, which is the commUnity layer.

Layer 3 is accounTable for all Packet Forwarding among interMediate Routers, in preference to Layer 2 (the Records link layer), that is answerable for media get entry to manage and drift manage, in addition to error checking of Layer 1 approaches.

What Does Layer 3 Mean?

Layer three gives the Network’s Routing and Switching technologies that create logical paths referred to as Virtual Circuits (VC), which are used for the transmission of facts among commuNity Nodes. The predominant Functions of Layer three include routing and forwarding, in addition to Internetworking, addressing, packet sequencing, Congestion manipulate and similarly errors coPing with.

The Protocols utilized in Layer 3 include:

• Internet Protocols IPv4/v6
• Internet Control Message Protocol (ICMP)
• Distance Vector Multicast Routing Protocol (DVMRP)
• Internet Group Management Protocol (IGMP)
• Address Resolution Protocol (ARP)
• Internet Protocol Security (IPsec)
• Routing Information Protocol (RIP)