ipv4 octets

-attached laptop I can ping IPv6 sitesOn the Internet as well as the IPv6 address of the phone.C:/users/Scott> Ping-6 ipv6.google.com Pinging example 6.l.google.com [2001: 4860: 0: 2001: 68] From2001: 5c0: 1000: B: 17b3 with 32 bytes of data:Reply from 2001: 4860: 0: 2001: 68: time = 139 MsReply from 2001: 4860: 0: 2001: 68: time = 136 MsReply from 2001: 4860: 0: 2001: 68: time = 137 MsReply from 2001: 4860: 0: 2001: 68: time = 145 Ms Ping statistics for 2001: 4860: 0: 2001: 68:Packets: Sent = 4

IPv4 address category: I. Composition1. Use a 32-bit address. 2. It is expressed in dotted decimal notation. For example, 172.16.0.0. Each number corresponds to eight binary BITs, which are called a single-bit group (octets ). For example, if the IP address of a host is 128.10.2.1 in binary format, the IP address is 0000000.00001010.00000010.000000013. The address format is: IP address = network address + h

the datagram, such as the ability to define security, record paths, network timestamps, and so on.Padding: variableUsed to fill the header to ensure that the header length is 32bit in integer multiples.UDP Headerhttp://tools.ietf.org/html/rfc768UDP datagrams are encapsulated into an IP datagram format: +------------+------------+-----------+ | IP Header | UDP Header | UDP Data | +------------+------------+-----------+ bytes

packets allowed to be sent to the queue when each network interface receives packets at a rate faster than the rate at which the kernel processes these packets. Default: 3004)/proc/sys/net/core/optmem_maxThis file indicates the maximum buffer size allowed by each socket. Default: 102405)/proc/sys/net/core/rmem_defaultThis file specifies the default value of the buffer size of the receiving socket (in bytes ). Default: 1105926)/proc/sys/net/core/rmem_maxThis file specifies the maximum buffer siz

/net/core/rmem_defaultThis file specifies the default value of the buffer size of the receiving socket (in bytes ). Default: 1105926)/proc/sys/net/core/rmem_maxThis file specifies the maximum buffer size of the received socket (in bytes ). Default: 1310717)/proc/sys/net/core/wmem_defaultThis file specifies the default value of the buffer size of the sending socket (in bytes ). Default: 1105928)/proc/sys/net/core/wmem_maxThis file specifies the maximum size of the buffer for sending Sockets (in b

Tag fields are information about tags and encoding formats;The length field defines the length of a value;The content (value) field indicates the actual value.Therefore, an encoding value is also called a TLV (TAG, length, value) triple. Encoding can be basic or structural. If it represents a simple type and a complete explicit value, encoding is primitive. If the value it represents has a nested structure, the encoding is a constructed ).TLV encoding is the encoding of tag, length, and value. T

The format of the Ethernet frame is as follows: 802.3 Ethernet frame structure forward code frame start character MAC destination address MAC source address 802.1Q label (optional) ethernet type or length load redundancy verification frame spacing 10101010 7 octet 10101011 1 octet 6 octets 6 octets (4 octets) 2 octets

: 1310719) to be continued ...Six,/proc/sys/net/ipv4/optimization1)/proc/sys/net/ipv4/ip_forwardThe file indicates whether IP forwarding is turned on.0, prohibit1, forwardingDefault setting: 02)/proc/sys/net/ipv4/ip_default_ttlThis file represents the lifetime of a datagram (time to Live), which is the maximum number of routers to go through.Default setting: 64In

continued ... Vi. optimization of/proc/sys/net/ipv4/ 1)/proc/sys/net/ipv4/ip_forward This file indicates whether IP forwarding is turned on. 0, prohibit 1, forwarding Default setting: 0 2)/proc/sys/net/ipv4/ip_default_ttl This file represents the life cycle of a datagram (time to Live), that is, the maximum number of routers. Default setting: 64 Increasing thi

2.9 Long Attribute Value The maximum size of the property that can be sent in a single packet is [att_mtu–1] octetsContains at least attribute Opcode in a attribute PDU Property value is greater than [Att_mtu-1] octets property is called Long Attribute For long Attribute-Use the Read Blob request to read the entire property (Attribute > [att_mtu-1] octets)-Write the entire property using prepare write requ

1 Introduction The IPv4 address is about to run out, so we need to move it to the IPv6 discussion, which has not been interrupted for the past few years. IPv4 and IPv6 are significantly different in terms of packet structure, packet field meaning, and address configuration, which brings great difficulties to the operation of the Internet during the transition from IPv4