Q&A 

What is the size of ARP packet?

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What is the size of ARP packet?

28 bytes
The size of an ARP request or reply packet is 28 bytes.

Why is the ARP request 42 bytes long?

Just discovered that ARP request messages are padded with 18 bytes of trailing zero bytes, making them 60 bytes long instead of 42 bytes. A third party device doesn’t like this and fails to respond to the ARP request message.

Is the size of the ARP packet fixed?

1 Approved Answer 1) No, The ARP packet size must vary because it contains 2 Hardware/MAC addresses in it and 2 different protocol addresses in it.

What is the maximum size of an Ethernet packet?

1518 bytes
In the standard IEEE 802.3 Ethernet specification, the minimum frame size was 64 bytes and the maximum was 1518 bytes (since expanded to 1522 bytes). The preamble consists of 7 bytes followed by a single byte as a start frame delineator.

What is the size of an ARP packet when the protocol is IPv4 and the hardware is Ethernet in bytes?

The ARP Response payload contains the same fields as the request above. Hardware Type and Hardware Size indicate an Ethernet (or MAC) address that is 6 bytes (48 bits). Protocol Type and Protocol Size indicate an IPv4 address that is 4 bytes (32 bits).

How many bytes is ARP header?

An ARP message consists of 42 bytes. The first 14 bytes indicate the Ethernet frame header, and the last 28 bytes are the ARP request or reply message content. Table 2-2 describes the fields in an ARP message. Ethernet destination MAC address in the Ethernet frame header.

What is the size of a jumbo packet?

1,500 bytes
A jumbo frame is an Ethernet frame with a payload greater than the standard maximum transmission unit (MTU) of 1,500 bytes. Jumbo frames are used on local area networks that support at least 1 Gbps and can be as large as 9,000 bytes.

Is a packet larger than a frame?

While a packet is the unit of data used in the network layer, a frame is the unit of data used in the OSI model’s data link layer. A frame contains more information about the transmitted message than a packet. In networking, there exist two types of frames: fixed-length and variable-length frames.