Timeline for Why two routers connected via PPP don't use ARP but Ethernet requires ARP?
Current License: CC BY-SA 4.0
19 events
| when toggle format | what | by | license | comment | |
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| S Jul 11, 2023 at 0:56 | history | suggested | S. M. | CC BY-SA 4.0 |
Correct the indentation.
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| Jul 10, 2023 at 1:55 | review | Suggested edits | |||
| S Jul 11, 2023 at 0:56 | |||||
| Sep 24, 2021 at 20:39 | comment | added | S. M. | Let us continue this discussion in chat. | |
| Sep 24, 2021 at 18:19 | comment | added | S. M. | That means in DVR router using broadcasting and layer2 switch helps to broadcasting? | |
| Sep 24, 2021 at 17:50 | comment | added | S. M. | Let us continue this discussion in chat. | |
| Sep 24, 2021 at 17:49 | comment | added | Effie | doing anything in layer 3 requires functioning layer 3. Routing protocol, which is there to build a functioning layer 3 cannot do anything that requires functioning layer 3. Routing protocol can use anything, that layer 2 can provide. So, if the packet has a broadcast destination IP address, then it is mapped to a broadcast layer 2 address and layer 2 is doing the broadcast. Whatever router does inside its control plane, which may or may not be called by similar names, is not layer 3 broadcast. | |
| Sep 24, 2021 at 17:43 | comment | added | S. M. | my is in DVR router is broadcasting in layer3 or switch in layer2 is broadcasting? | |
| Sep 24, 2021 at 17:40 | comment | added | Effie | routers have interfaces. routers are connected to other routers through interfaces Each interface has a layer 1 and 2 associated with it. To send a packet from one interface to another router needs to perform layer 2 processing (for Ethernet, this requires determining which MAC addresses to use in the packet). Control plane needs to determine on what interfaces to send packet. This is protocol-specific and cannot be answered in general. DVR protocols are RIP, EIGRP, BGP (path vector is distance vector) and Babel. They do not work the same. | |
| Sep 24, 2021 at 17:25 | comment | added | S. M. | suppose two router using DVR and they in layer3 in sender side. They don't reach data link layer till now in sender side. When they want exchange information they have to broadcast. So my question they using layer2 broadcast? Means first router stacked down from network layer, data link, physical layer to second router physical layer and data Linklayer. And in data link layer broadcast has done. Am I correct? | |
| Sep 24, 2021 at 16:45 | comment | added | Effie | what do you mean by "router communicate"? do you mean how they exchange routing information, or how the packet from A is forwarded? | |
| Sep 24, 2021 at 15:37 | comment | added | S. M. | my question how is it possible in network layer use of Mac address (data link layer) and physical layer? | |
| Sep 24, 2021 at 15:23 | comment | added | S. M. | My question how the two router communicated in network layer in sender side A? By ip address or Mac address | |
| Sep 24, 2021 at 15:22 | comment | added | Effie | The communication always goes down the whole stack. Once the communication reaches layer 3, layer 3 determines outgoing interface/next hop for the packet. Then, the communication goes into that interface's layer 2 for the interface/next hop with appropriate layer 2 processing. Then layer 2 passes its frame to layer 1 and data is physically sent over wire/air/whatever it is. | |
| Sep 24, 2021 at 15:19 | comment | added | Effie | Is the question - how A knows which router to send data to? | |
| Sep 24, 2021 at 15:16 | comment | added | S. M. | Suppose Host A wants to communicate with B. A has already crossed the it's application , transport layer. Now A comes in network layer. Now network layer has two router which are connected. My question how the two router communicated? Now presently A is in sender side in network layer, never enter it's data link layer. | |
| Sep 24, 2021 at 15:08 | comment | added | Effie | sorry, i do not understand that sentence because of the language. could you rephrase it? | |
| Sep 24, 2021 at 15:06 | comment | added | S. M. | But my question is that any two router connected in network layer in one side suppose sender side, it has not come yet data link layer. Then how they are communicated? | |
| Sep 24, 2021 at 9:59 | history | edited | Effie | CC BY-SA 4.0 |
added 174 characters in body
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| Sep 24, 2021 at 9:51 | history | answered | Effie | CC BY-SA 4.0 |