How can you tell the difference between an ARP request packet and an ARP reply packet as the Ethernet Type field on both packets is identical?

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How can you tell the difference between an ARP request packet and an ARP reply packet as the Ethernet Type field on both packets is identical?

How to differentiate between a ARP request packet and a ARP reply packet, as the Ethernet type field is same on both the packets? An ARP request packet can be differentiated from an ARP reply packet using the ‘operation’ field in the ARP packet. For a ARP request it is 1 and for an ARP reply it is 2.

Is ARP packet an IP packet?

While a standard ip packet / frame has different purposes – carry data for one, using Ip addresses for identifying end points. 4. However, an ARP packet is trying to find information about the point using the IP address. Therefore it is different from a standard IP packet.

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How does ARP work in network layer?

ARP broadcasts a request packet to all the machines on the LAN and asks if any of the machines are using that particular IP address. When a machine recognizes the IP address as its own, it sends a reply so ARP can update the cache for future reference and proceed with the communication.

At what layer does an ARP scan work?

Layer 2
An ARP scan is a Layer 2 scan that sends ARP requests for each IP address on a subnet, learning the MAC addresses of systems that answer.

What information is included in ARP packet?

The Address Resolution Protocol (ARP) is a communication protocol used for discovering the link layer address, such as a MAC address, associated with a given internet layer address, typically an IPv4 address. This mapping is a critical function in the Internet protocol suite.

What is the target IP address in ARP request and ARP reply packet?

In an ARP Response, this field contains a value of 2 . The Sender MAC and Sender IP Address include the addresses for Host B, which is expected given Host B sent the ARP Response. The Target MAC and Target IP Address include the addresses for Host A, as this is the target of the ARP Response.

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What category of ARP packet asks a device whether or not it has a specific IP address?

DHCP Discover – a packet sent by a device to request that an IP address be assigned to it.

What are ARP packets in Wireshark?

Address Resolution Protocol (ARP) The Address Resolution Protocol is used to dynamically discover the mapping between a layer 3 (protocol) and a layer 2 (hardware) address. A typical use is the mapping of an IP address (e.g. 192.168. 0.10) to the underlying Ethernet address (e.g. 01:02:03:04:05:06).

What is the difference between an ARP and a standard packet?

While a standard ip packet / frame has different purposes – carry data for one, using Ip addresses for identifying end points. 4. However, an ARP packet is trying to find information about the point using the IP address. Therefore it is different from a standard IP packet.

What layer does ARP operate at?

ARP is a protocol that map a known IP address to its corresponding MAC Address in an IPv4 network. Whether ARP operate at layer 2 or layer 3, that is a controversial topic. My personal opinion is that ARP operate at layer 2, when you think about it an ARP frame does not get broadcast pass the local network.

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What is ARP (Address Resolution Protocol)?

6 years ago Address Resolution Protocol (ARP) is a layer 2 protocol for mapping an Internet Protocol address (IP address) to a physical machine address (Mac address) that is recognized in the local network. An ARP frame is not routable, it does not get pass the local LAN.

How does ARP find the hardware address of a host?

Note: ARP finds the hardware address, also known as Media Access Control (MAC) address, of a host from its known IP address. Let’s look at how ARP works.