Is Mac A Layer 2?

Which layer is OSPF?

network layerOSPF is developed by Internet Engineering Task Force (IETF) as one of the Interior Gateway Protocol (IGP), i.e, the protocol which aims at moving the packet within a large autonomous system or routing domain.

It is a network layer protocol which works on the protocol number 89 and uses AD value 110..

What layer is the MAC address?

data link layerWithin the Open Systems Interconnection (OSI) network model, MAC addresses are used in the medium access control protocol sublayer of the data link layer. As typically represented, MAC addresses are recognizable as six groups of two hexadecimal digits, separated by hyphens, colons, or without a separator.

What is the role of MAC layer?

The MAC sublayer acts as an interface between the logical link control (LLC) Ethernet sublayer and Layer 1 (the physical layer). The MAC sublayer emulates a full-duplex logical communication channel in a multipoint network. This channel may provide unicast, multicast, or broadcast communication service.

What is MAC layer in OSI model?

The medium access control (MAC) is a sublayer of the data link layer of the open system interconnections (OSI) reference model for data transmission. It is responsible for flow control and multiplexing for transmission medium. It controls the transmission of data packets via remotely shared channels.

Is OSPF a layer 3 protocol?

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.

What OSI layer is BGP?

Layer 4BGP is a Layer 4 protocol that sits on top of TCP.

Is it Level 1 or Level 2?

No IS-IS area functions strictly as a backbone. Level 1 routers share intra-area routing information, and Level 2 routers share interarea information about IP addresses available within each area. … All routers within a level maintain a complete link-state database of all other routers in the same level.

Is router a Layer 2?

Routing is a layer 3 function. Packet switching is a layer 2 function. If a router can packet switch as well as route, it is a layer 2 and layer 3 device. … Anything upper layer protocol is going to sit on software and hardware that also function at the lower levels, but routing is done at 3.

What is a Layer 2 network?

Layer 2, also known as the Data Link Layer, is the second level in the seven-layer OSI reference model for network protocol design. Layer 2 is equivalent to the link layer (the lowest layer) in the TCP/IP network model. … Frames are transmitted to and received from devices on the same local area network (LAN).

Is VLAN a Layer 2?

A virtual LAN (VLAN) is any broadcast domain that is partitioned and isolated in a computer network at the data link layer (OSI layer 2). LAN is the abbreviation for local area network and in this context virtual refers to a physical object recreated and altered by additional logic.

What is a Layer 3 address?

The IP address is a layer 3 (network layer) address. … The MAC address is a layer 2 (data link) address. The layer 3 address is a logical address. It will pertain to a single protocol (such as IP, IPX, or Appletalk).

Why rip is Layer 7 protocol?

RIP is an Application Layer protocol. The application that is using the protocol is the RIP routing process / application on each router. An application layer protocol will still rely upon lower layers (Transport, Network, Data Link and Physical) to help deliver the Application data.

How do I find MAC address?

To Find the MAC Address: Open a Command Prompt -> type ipconfig /all and press Enter-> The Physical Address is the MAC address. Click Start or click in the search box and type cmd. Press Enter, or click on the Command Prompt shortcut.

Is it Layer 2 or 3?

While OSPF was natively built to route IP and is itself a Layer 3 protocol that runs on top of IP, IS-IS is an OSI Layer 2 protocol. It is at the same layer as Connectionless Network Protocol (CLNP). … To operate with IPv6 networks, the OSPF protocol was rewritten in OSPF v3 (as specified in RFC 2740).

What layer is MPLS?

layer 2.5MPLS is considered a layer 2.5 networking protocol. Layer 2 carries IP packets over simple LANs or point-to-point WANs, while layer 3 uses internet-wide addressing and routing using IP protocols. MPLS sits in between, with additional features for data transport across the network.