Local area network (LAN) and Ethernet-CodePudding

Recent study network, learn and Ethernet LAN some confused here!!!!!!
According to the book says only local area network (LAN) reference model corresponding to the data link layer of the OSI reference model and the physical layer, Ethernet is a local area network (LAN), and the data link layer provides reliable service, but why not reliable service is provided by Ethernet

Confused for a long time, also do not want to understand, o good little brother to take me out of the pit

CodePudding user response:

Explain the OSI is so? Or is it just a suggestion?

CodePudding user response:

The book is so ah

CodePudding user response:

Local area network (LAN) refers to the scope, the Ethernet is a network of way, I think should understand it, if compared the LAN to the south-eastern provinces and cities, the Ethernet is refers to the province,

CodePudding user response:

reference Iforgetmyid reply: 3/f

local area network (LAN) refers to the scope, the Ethernet is a network of way, I think should understand it, if compared the LAN to the south-eastern provinces and cities, the Ethernet is refers to the province,

Did not understand why the Ethernet only provide unreliable service

CodePudding user response:

Data link layer provides reliable service is the index according to the link layer of a layer provides a reliable service, that is to say, I only guarantee the accuracy of the 0 s and 1 s can you all of the upper reach you, but you're the top because you cache are insufficient or interrupt handling response is not enough or other reasons] lost my [bag], that it is not the data link layer, it only guarantee on its level of reliable, other level is a reliable or unreliable it can do,
Ethernet unreliable I estimate should be said Ethernet IP packet is unreliable, such as ping and udp, if you want to reliable you need TCP or other custom mechanism of transport protocol,

CodePudding user response:

reference 5 floor kinkon007 reply:

data link layer provides reliable service is the index according to the link layer of a layer provides a reliable service, that is to say, I only guarantee the accuracy of the 0 s and 1 s can you all of the upper reach you, but you're the top because you cache are insufficient or interrupt handling response is not enough or other reasons] lost my [bag], that it is not the data link layer, it only guarantee on its level of reliable, other level is a reliable or unreliable it can do,
Ethernet unreliable I estimate should be said Ethernet IP packet is unreliable, such as ping and udp, if you want to reliable you need TCP or other custom mechanism of transport protocol,

I feel what you said is quite reasonable, but my knowledge is limited, not understand

CodePudding user response:

refer to 6th floor qq_36927061 response:

Quote: refer to the 5 floor kinkon007 response:
data link layer provides reliable service is the index according to the link layer of a layer provides a reliable service, that is to say, I only guarantee the accuracy of the 0 s and 1 s can you all of the upper reach you, but you're the top because you cache are insufficient or interrupt handling response is not enough or other reasons] lost my [bag], that it is not the data link layer, it only guarantee on its level of reliable, other level is a reliable or unreliable it can do,
Ethernet unreliable I estimate should be said Ethernet IP packet is unreliable, such as ping and udp, if you want to reliable you need TCP or other custom mechanism of transport protocol,

I feel what you said is quite reasonable, but my knowledge is limited, not understand

Can understand so, like a railway system, the data link layer is just tracks, the packet is just train, only to ensure the train tracks run correctly not derailed, which is to provide reliable service, track the top of the train, the train from Beijing to Shanghai, the results from Beijing to guangzhou, the unreliable results can not track of the tube, is want to rely on more upper a mechanism to constrain the train should be from where to where,

CodePudding user response:

Local area network (LAN) refers to the network ask
Refers to the Ethernet network mode