Table of Contents
What happens when two hosts have the same IP?
An IP conflict occurs when two or more hosts in the same subnet are configured with the same IP address. When this happens, communications with the two conflicting hosts are mixed up. One host may receive packets that belong to the other one, and vice versa.
Can 2 hosts have the same IP?
Yes. Two virtual servers on the same Application Switch or Web Switch can share the same virtual IP address as long as they are each configured with unique services or with different source networks.
What happens if two hosts share the same IP address but not the same MAC address on a LAN?
When two MAC addresses have the same IP address, you will end up sending data to the wrong device as on local LAN segment, data is being send based on MAC destination and source address.
What problem will occur if two hosts are configured with the same MAC address?
No two devices on a local network should ever have the same MAC address. If that does happen, both devices will have communications problems because the local network will get confused about which device should receive the packet.
What would happen if two computers had the same Ethernet address and were on the same network?
If two devices have the same MAC Address (which occurs more often than network administrators would like), neither computer can communicate properly. On an Ethernet LAN, this will cause a high number of collisions. Duplicate MAC Addresses on the same LAN are a problem.
How can 2 computers have the same IP?
As I understand it, two computers cannot have the same public (external) IP address unless they are connected via the same router. If they are connected via the same router, then they can have (share) the same public IP address yet have different private (local) IP addresses.
Can a server have 2 host names?
Name-based and IP-based virtual hosting can be combined: a server may have multiple IP addresses and serve multiple names on some or all of those IP addresses. This technique can be useful when using SSL/TLS with wildcard certificates.
Why do we need both IP and MAC address?
So again, IP Addresses are logical and routeable addresses. And that’s why computers have both MAC Addresses and IP Addresses. MAC Addresses handle the physical connection from computer to computer while IP Addresses handle the logical routeable connection from both computer to computer AND network to network.
What kinds 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?
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.
Can two servers have the same IP address?
If you mean two physical boxes with the same IP address the answer is typically no. A case where you would is if serverA and serverB are working as an active-passive cluster then you would have each server have two addresses a piece.
How does ARP find the hardware address of a host?
Note: ARP finds the hardware address, also known as Media Access Control (MAC) address, of a host from its known IP address. Let’s look at how ARP works.
What is the ARP response/reply?
The IP address of the receiver. ARP response/reply: It is the MAC address response that the source receives from the destination which aids in further communication of the data. CASE-1: The sender is a host and wants to send a packet to another host on the same network. Use ARP to find another host’s physical address.
Is it possible to have two hostnames for one server?
You need to be clear on what you mean by two hostnames. If you mean two physical boxes with the same IP address the answer is typically no. A case where you would is if serverA and serverB are working as an active-passive cluster then you would have each server have two addresses a piece.