What precisely is a link?
When reading about layer 2 the word "link" is frequently used but strangely I'm struggling to find a formal definition of it. What is the precise definition of a link?
So in the image below, how many links are in this network and what makes that the case? Is it the physical cable between two devices, or can a link span multiple devices, or something else?
lan layer2 networking
asked 1 hour ago
Sam PSam P
1444
add a comment |
When reading about layer 2 the word "link" is frequently used but strangely I'm struggling to find a formal definition of it. What is the precise definition of a link?
So in the image below, how many links are in this network and what makes that the case? Is it the physical cable between two devices, or can a link span multiple devices, or something else?
lan layer2 networking
asked 1 hour ago
Sam PSam P
1444
add a comment |
When reading about layer 2 the word "link" is frequently used but strangely I'm struggling to find a formal definition of it. What is the precise definition of a link?
So in the image below, how many links are in this network and what makes that the case? Is it the physical cable between two devices, or can a link span multiple devices, or something else?
lan layer2 networking
asked 1 hour ago
Sam PSam P
1444
When reading about layer 2 the word "link" is frequently used but strangely I'm struggling to find a formal definition of it. What is the precise definition of a link?
So in the image below, how many links are in this network and what makes that the case? Is it the physical cable between two devices, or can a link span multiple devices, or something else?
lan layer2 networking
lan layer2 networking
asked 1 hour ago
Sam PSam P
1444
asked 1 hour ago
Sam PSam P
1444
edited 34 mins ago
Sam P
asked 1 hour ago
Sam PSam P
1444
asked 1 hour ago
Sam PSam P
1444
asked 1 hour ago
Sam PSam P
1444
1444
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
There is no single precise definition for a "link".
A link can be a physical layer connection, two ports connected by a cable.
A link can also be understood as a general connection by data link layer, ie. point-to-multipoint (as in "does the VLAN link over that trunk?" or with an aggregated link).
The TCP/IP model defines the link layer as the one below the network layer (=OSI layers 1 and 2). It doesn't care what goes on in there.
answered 39 mins ago
Zac67Zac67
33.8k22167
add a comment |
Link is physical or Logical(Virtual) Connection which use to interconnect host/nodes(Devices). Link always refer connectivity. Link can span over multiple device. If you want to connection between America and Australia, You need to have Link. It will not be direct connection between two device. It is required to go through multiple devices.
Link Protocol is collection of standards that operate in LAN or WAN.(Between Adjacent Network nodes )
answered 1 hour ago
serverAdmin123serverAdmin123
54817
So would it be correct to say my laptop has a link with every accessible device in the internet as well as in my LAN? And following on from that, does my laptop have a link with transparent devices like switches that sit between it and other devices, even if it's not aware of it?
– Sam P
1 hour ago
Just think you are flying from America to Australia,Your plane may go through Europe,Asia and many countries. Sometimes plane may land in few countries. You are not allow to visit those countries. But you can fly through those countries. You are flying to Australia not to Europe or other country. Same for Links as well. Hope you understand???
– serverAdmin123
1 hour ago
You have mixed link and connection, As nouns the difference between connection and link. is that connection is (uncountable) the act of connecting while link is a connection between places, persons, events, or things or link can be (obsolete) a torch, used to light dark streets. wikidiff.com/connection/link
– serverAdmin123
1 hour ago
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "496"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fnetworkengineering.stackexchange.com%2fquestions%2f58811%2fwhat-precisely-is-a-link%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
There is no single precise definition for a "link".
A link can be a physical layer connection, two ports connected by a cable.
A link can also be understood as a general connection by data link layer, ie. point-to-multipoint (as in "does the VLAN link over that trunk?" or with an aggregated link).
The TCP/IP model defines the link layer as the one below the network layer (=OSI layers 1 and 2). It doesn't care what goes on in there.
answered 39 mins ago
Zac67Zac67
33.8k22167
add a comment |
There is no single precise definition for a "link".
A link can be a physical layer connection, two ports connected by a cable.
A link can also be understood as a general connection by data link layer, ie. point-to-multipoint (as in "does the VLAN link over that trunk?" or with an aggregated link).
The TCP/IP model defines the link layer as the one below the network layer (=OSI layers 1 and 2). It doesn't care what goes on in there.
answered 39 mins ago
Zac67Zac67
33.8k22167
add a comment |
There is no single precise definition for a "link".
A link can be a physical layer connection, two ports connected by a cable.
A link can also be understood as a general connection by data link layer, ie. point-to-multipoint (as in "does the VLAN link over that trunk?" or with an aggregated link).
The TCP/IP model defines the link layer as the one below the network layer (=OSI layers 1 and 2). It doesn't care what goes on in there.
answered 39 mins ago
Zac67Zac67
33.8k22167
There is no single precise definition for a "link".
A link can be a physical layer connection, two ports connected by a cable.
A link can also be understood as a general connection by data link layer, ie. point-to-multipoint (as in "does the VLAN link over that trunk?" or with an aggregated link).
The TCP/IP model defines the link layer as the one below the network layer (=OSI layers 1 and 2). It doesn't care what goes on in there.
answered 39 mins ago
Zac67Zac67
33.8k22167
answered 39 mins ago
Zac67Zac67
33.8k22167
answered 39 mins ago
Zac67Zac67
33.8k22167
answered 39 mins ago
Zac67Zac67
33.8k22167
33.8k22167
add a comment |
add a comment |
Link is physical or Logical(Virtual) Connection which use to interconnect host/nodes(Devices). Link always refer connectivity. Link can span over multiple device. If you want to connection between America and Australia, You need to have Link. It will not be direct connection between two device. It is required to go through multiple devices.
Link Protocol is collection of standards that operate in LAN or WAN.(Between Adjacent Network nodes )
answered 1 hour ago
serverAdmin123serverAdmin123
54817
So would it be correct to say my laptop has a link with every accessible device in the internet as well as in my LAN? And following on from that, does my laptop have a link with transparent devices like switches that sit between it and other devices, even if it's not aware of it?
– Sam P
1 hour ago
Just think you are flying from America to Australia,Your plane may go through Europe,Asia and many countries. Sometimes plane may land in few countries. You are not allow to visit those countries. But you can fly through those countries. You are flying to Australia not to Europe or other country. Same for Links as well. Hope you understand???
– serverAdmin123
1 hour ago
You have mixed link and connection, As nouns the difference between connection and link. is that connection is (uncountable) the act of connecting while link is a connection between places, persons, events, or things or link can be (obsolete) a torch, used to light dark streets. wikidiff.com/connection/link
– serverAdmin123
1 hour ago
add a comment |
Link is physical or Logical(Virtual) Connection which use to interconnect host/nodes(Devices). Link always refer connectivity. Link can span over multiple device. If you want to connection between America and Australia, You need to have Link. It will not be direct connection between two device. It is required to go through multiple devices.
Link Protocol is collection of standards that operate in LAN or WAN.(Between Adjacent Network nodes )
answered 1 hour ago
serverAdmin123serverAdmin123
54817
So would it be correct to say my laptop has a link with every accessible device in the internet as well as in my LAN? And following on from that, does my laptop have a link with transparent devices like switches that sit between it and other devices, even if it's not aware of it?
– Sam P
1 hour ago
Just think you are flying from America to Australia,Your plane may go through Europe,Asia and many countries. Sometimes plane may land in few countries. You are not allow to visit those countries. But you can fly through those countries. You are flying to Australia not to Europe or other country. Same for Links as well. Hope you understand???
– serverAdmin123
1 hour ago
You have mixed link and connection, As nouns the difference between connection and link. is that connection is (uncountable) the act of connecting while link is a connection between places, persons, events, or things or link can be (obsolete) a torch, used to light dark streets. wikidiff.com/connection/link
– serverAdmin123
1 hour ago
add a comment |
Link is physical or Logical(Virtual) Connection which use to interconnect host/nodes(Devices). Link always refer connectivity. Link can span over multiple device. If you want to connection between America and Australia, You need to have Link. It will not be direct connection between two device. It is required to go through multiple devices.
Link Protocol is collection of standards that operate in LAN or WAN.(Between Adjacent Network nodes )
answered 1 hour ago
serverAdmin123serverAdmin123
54817
Link is physical or Logical(Virtual) Connection which use to interconnect host/nodes(Devices). Link always refer connectivity. Link can span over multiple device. If you want to connection between America and Australia, You need to have Link. It will not be direct connection between two device. It is required to go through multiple devices.
Link Protocol is collection of standards that operate in LAN or WAN.(Between Adjacent Network nodes )
answered 1 hour ago
serverAdmin123serverAdmin123
54817
answered 1 hour ago
serverAdmin123serverAdmin123
54817
answered 1 hour ago
serverAdmin123serverAdmin123
54817
answered 1 hour ago
serverAdmin123serverAdmin123
54817
54817
So would it be correct to say my laptop has a link with every accessible device in the internet as well as in my LAN? And following on from that, does my laptop have a link with transparent devices like switches that sit between it and other devices, even if it's not aware of it?
– Sam P
1 hour ago
Just think you are flying from America to Australia,Your plane may go through Europe,Asia and many countries. Sometimes plane may land in few countries. You are not allow to visit those countries. But you can fly through those countries. You are flying to Australia not to Europe or other country. Same for Links as well. Hope you understand???
– serverAdmin123
1 hour ago
You have mixed link and connection, As nouns the difference between connection and link. is that connection is (uncountable) the act of connecting while link is a connection between places, persons, events, or things or link can be (obsolete) a torch, used to light dark streets. wikidiff.com/connection/link
– serverAdmin123
1 hour ago
add a comment |
So would it be correct to say my laptop has a link with every accessible device in the internet as well as in my LAN? And following on from that, does my laptop have a link with transparent devices like switches that sit between it and other devices, even if it's not aware of it?
– Sam P
1 hour ago
Just think you are flying from America to Australia,Your plane may go through Europe,Asia and many countries. Sometimes plane may land in few countries. You are not allow to visit those countries. But you can fly through those countries. You are flying to Australia not to Europe or other country. Same for Links as well. Hope you understand???
– serverAdmin123
1 hour ago
You have mixed link and connection, As nouns the difference between connection and link. is that connection is (uncountable) the act of connecting while link is a connection between places, persons, events, or things or link can be (obsolete) a torch, used to light dark streets. wikidiff.com/connection/link
– serverAdmin123
1 hour ago
So would it be correct to say my laptop has a link with every accessible device in the internet as well as in my LAN? And following on from that, does my laptop have a link with transparent devices like switches that sit between it and other devices, even if it's not aware of it?
– Sam P
1 hour ago
So would it be correct to say my laptop has a link with every accessible device in the internet as well as in my LAN? And following on from that, does my laptop have a link with transparent devices like switches that sit between it and other devices, even if it's not aware of it?
– Sam P
1 hour ago
Just think you are flying from America to Australia,Your plane may go through Europe,Asia and many countries. Sometimes plane may land in few countries. You are not allow to visit those countries. But you can fly through those countries. You are flying to Australia not to Europe or other country. Same for Links as well. Hope you understand???
– serverAdmin123
1 hour ago
Just think you are flying from America to Australia,Your plane may go through Europe,Asia and many countries. Sometimes plane may land in few countries. You are not allow to visit those countries. But you can fly through those countries. You are flying to Australia not to Europe or other country. Same for Links as well. Hope you understand???
– serverAdmin123
1 hour ago
You have mixed link and connection, As nouns the difference between connection and link. is that connection is (uncountable) the act of connecting while link is a connection between places, persons, events, or things or link can be (obsolete) a torch, used to light dark streets. wikidiff.com/connection/link
– serverAdmin123
1 hour ago
You have mixed link and connection, As nouns the difference between connection and link. is that connection is (uncountable) the act of connecting while link is a connection between places, persons, events, or things or link can be (obsolete) a torch, used to light dark streets. wikidiff.com/connection/link
– serverAdmin123
1 hour ago
add a comment |
Thanks for contributing an answer to Network Engineering Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fnetworkengineering.stackexchange.com%2fquestions%2f58811%2fwhat-precisely-is-a-link%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
