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The 16-bit checksum field is used for error-checking of the TCP header, the payload and an IP pseudo-header. The pseudo-header consists of the source IP address, the destination IP address, the protocol number for the TCP protocol (6) and the length of the TCP headers and payload (in bytes). Urgent Pointer: 16 bits
The payload length field of IPv6 (and IPv4) has a size of 16 bits, capable of specifying a maximum length of 65 535 octets for the payload. In practice, hosts determine the maximum usable payload length using Path MTU Discovery (yielding the minimum MTU along the path from sender to receiver), to avoid having to fragment packets.
The default TCP Maximum Segment Size is for IPv4 is 536. For IPv6 it is 1220. [1]: §3.7.1 Where a host wishes to set the maximum segment size to a value other than the default, the maximum segment size is specified as a TCP option, initially in the TCP SYN packet during the TCP handshake. The value cannot be changed after the connection is ...
Jumbograms are packets with a Jumbo Payload option to allow transmission of payloads between 65,536 and 4,294,967,295 octets in length. X.25: Minimal 576 (sending) or 1600 (receiving) [6] Ethernet v2: 1500 [7] Nearly all IP over Ethernet implementations use the Ethernet II frame format. Ethernet with LLC and SNAP: 1492 [8] Ethernet jumbo frames
The Total Length field of IPv4 and the Payload Length field of IPv6 each have a size of 16 bits, thus allowing data of up to 65 535 octets. IPv6's jumbo payload option allows for up to 4 GiB (2 32 -1 bytes) payload.
TCP Transmission Control Protocol: RFC 793: 0x07 7 CBT Core-based trees: RFC 2189: 0x08 8 EGP Exterior Gateway Protocol: RFC 888: 0x09 9 IGP Interior gateway protocol (any private interior gateway, for example Cisco's IGRP) 0x0A 10 BBN-RCC-MON BBN RCC Monitoring 0x0B 11 NVP-II Network Voice Protocol: RFC 741: 0x0C 12 PUP Xerox PUP: 0x0D 13 ...
Payload In general, the payload is the data that is carried on behalf of an application. It is usually of variable length, up to a maximum that is set by the network protocol and sometimes the equipment on the route. When necessary, some networks can break a larger packet into smaller packets. [6]
Payload is a variable-length field. Its minimum size is governed by a requirement for a minimum frame transmission of 64 octets (bytes). [e] With header and FCS taken into account, the minimum payload is 42 octets when an 802.1Q tag is present [f] and 46 octets when absent. When the actual payload is less than the minimum, padding octets are ...