Contents
- 1 What are L2 and L3 protocols?
- 2 What are the protocols used in network layer?
- 3 What are the protocols of physical layer?
- 4 What is another name for Internet layer?
- 5 What four things do physical layer standards govern?
- 6 What is the difference between L2 VLAN and L3 VLAN?
- 7 When to use a L2 switched IP infrastructure?
- 8 What is the function of Layer 2 on a LAN?
What are L2 and L3 protocols?
Different types of network Protocols (L2 and L3)
- Layer 2: It is a data link layer. Mac address, Ethernet, Token Ring, and Frame Relay are all examples of Data link layer.
- Layer 3: It is a network layer that determines the best available path in the network for communication. An IP address is an example of layer3.
What are the protocols used in network layer?
TCP/IP Protocol Architecture Model
| OSI Ref. Layer No. | OSI Layer Equivalent | TCP/IP Protocol Examples |
|---|---|---|
| 5,6,7 | Application, Session, Presentation | NFS, NIS+, DNS, telnet , ftp , rlogin , rsh , rcp , RIP, RDISC, SNMP, and others |
| 4 | Transport | TCP, UDP |
| 3 | Network | IP, ARP, ICMP |
| 2 | Data Link | PPP, IEEE 802.2 |
What are the protocols of physical layer?
Examples of protocols that use physical layers include:
- Digital Subscriber Line.
- Integrated Services Digital Network.
- Infrared Data Association.
- Universal Serial Bus (USB.)
- Bluetooth.
- Controller Area Network.
- Ethernet.
Which of the following is a layer 3 protocol?
Internet Protocol
Networking on z/OS The most significant protocol at layer 3 (also called the network layer) is the Internet Protocol, or IP. IP is the standard for routing packets across interconnected networks–hence, the name internet. It is an encapsulating protocol similar to the way Ethernet is an encapsulating protocol.
What is the difference between L2 and L3 switch?
Layer 2 switches are used to reduce traffic on the local network, whereas Layer 3 switches mostly used to Implement VLAN. The advantage of Layer 2 switches is that it helps to forward packets based on unique MAC addresses. The advantage of Layer 3 switches offers flow accounting and high-speed scalability.
What is another name for Internet layer?
Network or routing layer This layer is also known as the Internet layer. The layer roughly corresponds to the OSI network layer, and is responsible for routing messages between different local networks. Devices responsible for routing messages between networks are called gateways or routers in TCP/IP terminology.
What four things do physical layer standards govern?
What four things do physical layer standards govern? Physical layer standards govern physical links between devices which includes connectors, plugs, transmission media, and signaling. Distinguish between binary and digital signaling.
What is the difference between L2 VLAN and L3 VLAN?
The main difference between Layer 2 and Layer 3 is the routing function. That means, a Layer 3 switch has both MAC address table and IP routing table, and handles intra-VLAN communication and packets routing between different VLANs as well. A switch that adds only static routing is known as a Layer 2+ or Layer 3 Lite.
What are the protocols for a layer 3 router?
At Layer 3, routers will use dynamic routing protocols (generally Open Shortest Path First or OSPF and BGP in most enterprises) to present a robust network that handles site-to-site link failures and minimizes the burden of IP management.
Can a L3 protocol deal with MAC addresses?
As you know L3 protocols do not deal with MAC addresses, because MAC addresses are at L2.
When to use a L2 switched IP infrastructure?
Point-to-point L2 connections are vital when creating L2VPNs. As Internet service providers (ISPs) look to replace their Frame Relay or Asynchronous Transfer Mode (ATM) infrastructures with an IP infrastructure, there is a need to provide standard methods of using an L2 switched, IP or MPLS-enabled IP infrastructure.
What is the function of Layer 2 on a LAN?
The data link layer, or Layer 2,contains protocols that control the physical layer (Layer 1) and data framing for transmission on the physical medium. The Layer 2 function of filtering and forwarding data in frames between two segments on a LAN is known as bridging.