Contents
- 1 What would happen if two devices had the same address on the network?
- 2 What kind of problems can arise when two hosts on the same Ethernet share the same hardware address Describe what happens and why that behavior is a problem?
- 3 Why is it important for protocols configured on top of Ethernet to have a length field in the header indicating how long the message is?
- 4 Can a MAC address be changed in a broadcast domain?
- 5 What’s the difference between MAC address in the same subnet?
- 6 What happens if two computers have the same MAC?
What would happen if two devices had the same address on the network?
If you mistakenly assign the same static address to two devices, you’ll run into a duplicate IP error. Another IP conflict scenario can occur if you have two DHCP servers on your network (which you should avoid). For example, you might have your own wireless router connected to your ISP’s modem and router combo.
Hosts are using hardware address to filter whether the packet is for them or not. So, they can discard the packets which do not belong to them. However, if the same hardware address is shared with other host, it is likely to receive wrong packets which can harm the host.
Is sharing TV MAC address safe?
Probably not. The MAC address is a unique 12 character string assigned by the manufacturer. Unless your device has been granted access to some secure network based solely on its MAC address… giving it out should not be a problem.
Why is it important for protocols configured on top of Ethernet to have a length field in the header indicating how long the message is?
33) Why is it important for protocols configured on top of Ethernet to have a length field in their header? Because there is a minimum frame size, small messages have to be padded, meaning that the end of the frame is not necessarily the end of the message.
Can a MAC address be changed in a broadcast domain?
In a broadcast domain of any size, the Ethernet MAC address is kept intact when forwarded by the switches out the correct port. There will be no MAC address change. Having said this, communication between your 2 computers in the same IP subnet, say 192.168.1.0/24 is possible and no change of MAC address will happen.
How can I tell if my MAC address is the same as my host?
The CAM table on the Core switch will show the relevant interface that the MAC address was learned from. This could be a Trunk port to another switch or the actual outgoing interface if the host is plugged into the Core. 06-18-2014 06:10 AM
What’s the difference between MAC address in the same subnet?
If Computer A in Subnet A needs to communicate to Computer B in Subnet B then: Computer A sends the frame with the MAC destination the MAC of the Default Gateway IP in Subnet A which is for purpose of this explanation a Router.
What happens if two computers have the same MAC?
A host can have multiple NIC’s and that would mean multiple IP’s and multiple MAC’s. Maybe he means multiple IP’s on a single NIC but actually although that is possible you can only use one IP address at a time but yes they would both have the same MAC but they wouldn’t both be online at the same time.