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The MAC addresses are used in the layer 2 of the frame, and the layer 2 define the local network. So, the destination MAC address is the address of your gateway if the final target is not on the same LAN.
- routing - Do routers change MAC address of packets when ...
If the connection is Ethernet then the IP packet will be...
- How do routers traverse packets to their destination?
For Ethernet this means comparing the packet's destination...
- routing - Do routers change MAC address of packets when ...
May 29, 2014 · The device encapsulates the data into an IP packet with the source and destination IP addresses. The source MAC address is the MAC address of the sender's NIC. The destination MAC address is determined based on the routing process.
- IP packets aren't always encapsulated in Ethernet frames. There are other physical media such as ISDN, etc. When packets are routed, IP addresses a...
- Bit late but still here is my answer :) ... To send data you need two address, the MAC address and the IP address.
- Here's the key point -- there can be more types of packets than INTERNET traffic. You could be using IPX, which is non-routable. How do clients ide...
- Recently I have been thinking about the same and came upon this question. Here is my answer to this question. Actually MAC address is needed for co...
Sep 20, 2018 · If the connection is Ethernet then the IP packet will be encapsulated in an Ethernet frame with the router's interface as source MAC and a MAC address looked up using the next-hop IP address as destination MAC address.
- H1
- R1
- R2
- H2
Let’s start with H1. This host creates an IP packet with its own IP address (192.168.1.1) as the source and H2 (192.168.2.2) as the destination. Thefirst questionthat H1 will ask itself is: 1. Is the destination local or remote? It answers this question by looking at its own IP address, its subnet mask and the destination IP address: H1 is in netwo...
This Ethernet frame makes it to R1 which has more work to do than our host. The first thing it does, is check if the FCS (Frame Check Sequence) of the Ethernet frame is correct or not: If the FCS is incorrect, the frame is dropped right away. There is no error recovery for Ethernet, this is something that is done by protocols on upper layers, like ...
This Ethernet frame makes it to R2. Like R1 it will first do this: 1. Check the FCS of the Ethernet frame. 2. De-encapsulates the IP packet, discard the frame. 3. Check the IP header checksum. 4. Check the destination IP address. In the routing table, we find this: Network 192.168.2.0/24 is directly connected to R2 on its GigabitEthernet 0/1 interf...
H2 receives the Ethernet frame and will: 1. Check the FCS 2. Find its own MAC address as the destination MAC address. 3. De-encapsulates the IP packet from the frame. 4. Finds its own IP address as the destination in the IP packet. H2 then looks for the protocol field to figure out what transport layer protocol we are dealing with, what happens nex...
Aug 12, 2016 · For Ethernet this means comparing the packet's destination MAC address with the MAC address of the incoming Ethernet port on the router. The router strips off the L2 framing and passes the packet into IP routing. The router looks up the destination IP address in it's routing table.
Mar 2, 2017 · When PC1 sends a frame to PC2 in the same network, the destination mac address will be the MAC address of PC2 and source mac address will be the mac address of PC1. In this scenario there will be no change to the frame from source to destination.
People also ask
How a packet/frame is routed to a destination MAC address?
How does a router forward a packet?
What is the difference between source MAC and destination MAC address?
How does a router determine a MAC address?
Source MAC = A. Destination MAC = C. Why: When A needs to send data to another host it first determines whether or not the detination host is on the local network. Upon determining that the destination is not local, A sends the data to it's configured default gateway, which is C.
