Explain the features of UDP and give frame format of the.
Key Concept: UDP packages application layer data into a very simple message format that includes only four header fields.One of these is an optional checksum field; when used, the checksum is computed over both the real header and a “pseudo header” of fields from the UDP and IP headers, in a manner very similar to how the TCP checksum is calculated.
I need to capture UDP information coming to me via an Ethernet frame. I have a point to point connection by fiber with 1000BASE-X Ethernet. The information coming to me is in GMII format; which is bytes at a rate of 125 MHz. The UDP header format is shown below.
IPv4 Header. Notes. The Internet Protocol (IPv4) is defined in RFC 791 which specifies the format of the header.; IHL (Internet Header Length) is 4 bits long and specifies the header length in increments of 32 bits (DWORD). The IHL field can hold values from 0 (Binary 0000) to 15 (Binary 1111).So the longest the IP header size can be is upto 480 bits, which is 60 bytes.
The length in bytes of the UDP header and the encapsulated data. The minimum value for this field is 8. Checksum. 16 bits. Computed as the 16-bit one's complement of the one's complement sum of a pseudo header of information from the IP header, the UDP header, and the data, padded as needed with zero bytes at the end to make a multiple of two.
This frame differs from the Ethernet standard frame only by the addition of a Sequence Number field at the end of the frame. The frame is made up of the Ethernet Header, IP Header, UDP Header, UDP Payload, Sequence Number, and the Frame Check Sequence(FCS). The following table shows the frame fields in order with the number of bytes for each.
Each Ethernet frame starts with an Ethernet header, which contains destination and source MAC addresses as its first two fields. The middle section of the frame is payload data including any headers for other protocols (for example, Internet Protocol) carried in the frame. The frame ends with a frame check sequence (FCS), which is a 32-bit.
APA headings and subheadings. Date published October 4, 2016 by Raimo Streefkerk. Date updated: March 6, 2020. A paper is usually divided into chapters and subsections. Each chapter or section has its own heading, and these headings provide structure to a document.