Ethereum status
Ethereum Community Foundation (ECF) is a non-profit organization. Its original idea was to give community projects a bonus to support incubation of early projects and research. Then in 2018, omisego, Golem, status, maker, Web3 (Polkadot), cosmos and ef (Ethereum Fund) were set up in Tokyo as consultants
ECF 2.0 is the upgrade of ECF, which has two core goals:
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coordinate community relations through various harmonious ways, such as bonus, strategic and business support, and community activities
in order to become an open capital network, ECF emphasizes its initial vision, which is to form a network with various funds to realize the support and contribution to the community
In addition, ECF 2.0 upgrade will not only support non-profit infrastructure projects, ecation programs, instrial community activities, but also support application and tool development, and even commercial projectseach version of Ethernet has a maximum cable length limit (that is, the length without amplification). Signals within this range can propagate normally, and signals beyond this range cannot propagate
in order to allow the construction of a larger network, repeaters can be used to connect multiple cables. Repeater is a physical layer device, which can receive, amplify and retransmit signals in two directions
extended data
several common Ethernet interface types
1. SC optical fiber interface
SC optical fiber interface has been applied in the era of 100base TX Ethernet, so it was called 100base FX at that time (F is the abbreviation of optical fiber). However, at that time, because the performance was not more prominent than twisted pair, but the cost was higher, so it was not popularized. Now the instry vigorously promotes gigabit network, and SC optical fiber interface is re valued
2. RJ-45 interface
this kind of interface is the most common network equipment interface, commonly known as "crystal head", and the professional term is RJ-45 connector, which belongs to the type of twisted pair Ethernet interface. RJ-45 plug can only be inserted along the fixed direction, and a plastic spring piece is set to be stuck with RJ-45 slot to prevent it from falling off
3. FDDI interface
FDDI has the highest transmission rate among the mature LAN technologies. It has the characteristics of timed token protocol, supports a variety of topologies, and its transmission medium is optical fiber. Fiber distributed data interface (FDDI) is a set of protocols developed by American National Organization for Standardization (ANSI) to transmit digital signals on optical cables
reference source: Network Ethernet interface
Check the established bond information. The general information is as follows:
cat / proc / net / bonding / eth1
Ethernet channel bonding driver: v3.4.0 (October 7, 2008)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: eth2
Currently Active Slave: eth2
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth2
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:0c:29: DB: 30:5a
slave interface: eth3
MII status: up
link failure count: 0
permanent HW addr: 00:0c: 29: DB: 30:64
< P > if the bond is not established, Usingnmcli dev disconnect eth1
nmcli dev connect eth1
Service restart network
extended materials:
linux gets support from software lovers, organizations and companies all over the world. In addition to maintaining a strong momentum of development in the server, it has made great progress in personal computers and embedded systems. Users can not only intuitively obtain the implementation mechanism of the operating system, but also modify and improve Linux according to their own needs to make it adapt to the needs of users to the maximum
linux is not only stable, but also open source software. Its core firewall component has high performance and simple configuration, which ensures the security of the system. In many enterprise networks, in order to pursue speed and security, Linux is not only used as a server by network operation and maintenance personnel, Linux can be used as both a server and a network firewall, which is a highlight of Linux
2. Ifconfig Function Description: display or set network device
syntax: ifconfig [network device] [down up - allmulti - ARP - promise] [add & lt; Address & gt;][ del< Address & gt;][& lt; Hardware address & gt;][ media< Internet media types & gt;][ mem_ start< Memory address & gt;][ metric< Number & gt;][ mtu< Bytes & gt;][ netmask< Subnet mask & gt;][ tunnel< Address & gt;][- broadcast< Address & gt;][- pointopoint< Address & gt;]
supplementary note: ifconfig can set the status of network devices or display the current settings
parameter:
[network device] name of the network device
down close the specified network device
up starts the specified network device
- ARP turns on or off the ARP protocol used on the specified interface. A minus sign precedes this option
- allmuti turns off or starts the indifference mode of the specified interface. A minus sign precedes this option
- promise turns off or starts the promise mode of the specified network device. A minus sign precedes this option< br />add< Address & gt; Set the IP address of network device IPv6< br />del< Address & gt; Delete the IPv6 IP address of the network device< br />media< Types of network media & gt; Set the media type of the network device< br />mem_ start< Memory address & gt; Set the starting address occupied by the network device in the main memory< br />metric< Number & gt; Specifies the number to add when calculating the number of forwarding packets< br />mtu< Bytes & gt; Set the MTU of the network device< br />netmask< Subnet mask & gt; Set the subnet mask of the network device< br />tunnel< Address & gt; Establish the tunnel communication address between IPv4 and IPv6< br />-broadcast< Address & gt; The packets to be sent to the specified address are treated as broadcast packets< br />-pointopoint< Address & gt; Establish a direct connection with the network equipment at the specified address. This mode has the function of confidentiality.
Feitian piglet
Feitian piglet
virtual currency BTC LTC eth etc as the main accurate K-line analysis for many years
Auricularia auricula has the functions of Supplementing Qi and strengthening the body, nourishing kidney and stomach, promoting blood circulation, etc., it can resist blood coagulation, antithrombotic, and rece blood lipid, Auricularia auricula can rece blood viscosity, soften blood vessels, make blood flow smooth, and rece the occurrence of cardiovascular diseases. Auricularia auricula also has a strong adsorption, often eating is concive to the timely discharge of garbage generated in the body. Auricularia auricula also has a good function of dissolving gallstones and kidney stones. Because the alkaloids contained in Auricularia auricula can promote the secretion of various glands in the digestive tract and urinary tract, the alkaloids can cooperate with these secretions to catalyze stones and lubricate the intestinal tract
nutritional value:
Auricularia auricula is known by nutritionists as "the meat in the vegetable" and "the king in the vegetable". It contains 185 mg of iron per 100 g of Auricularia auricula, which is 20 times higher than spinach with the highest iron content in green leafy vegetables, and about 7 times higher than pig liver with the highest iron content in animal foods. It is the most iron content in all kinds of meat and vegetable foods. Auricularia auricula is a kind of delicious and nutritious edible fungus, which is rich in protein, iron, calcium, vitamins and crude fiber. The protein content of Auricularia auricula is equal to that of meat, iron is 10 times higher than that of meat, calcium is 20 times higher than that of meat, and vitamin B is 20 times higher than that of meat_ Auricularia auricula also contains a variety of beneficial amino acids and trace elements, known as "the meat in the vegetable". The nutritional components of 100g Auricularia auricula are: moisture 10.9g, protein 10.6g, fat 0.2g, carbohydrate 65.5g, calorie 306 kcal, crude fiber 7.0g, ash 5.8G, calcium 357mg, phosphorus 201 mg, iron 185mg, carotene 0.03mg, thiamine 0.15mg, riboflavin 0.55mg, nicotinic acid 2.7mg.
