CONVERSATION MAC ADDRESS LEARNING PC
Usually, devices volunteer through a Ghost Client loaded by CD or USB on the PC to receive this type of message. from a Ghost-Server heading to group of computers on the network and PC1 could be one of them. The following figure shows a Multicast Frame message, e.g. Multicast frame used in special cases for a specific group of computers. PC1 in the following figure creates a new IP packet indicating this time Web-Server’s IP address as destination IP address (172.16.10.20), and encapsulates the IP packet inside a Frame heading to R3’s MAC address as next-hop since PC1 knows now the R3 MAC address. PC1 sends broadcast frame using ARP Message Request, creates an IP packet indicating R3’s IP Address (192.168.1.1) as destination (which is known to PC1 through DHCP or Static IP configuration), and encapsulates the packet inside a frame indicating an ARP Message Request as Broadcast address () inside the frame.Īfter receiving an ARP Reply Message and learning R3’s MAC address, PC1 can now use R3 as next hop for outside routing, and can create an IP Packet destined to Web-server’s IP address. In order to learn R3 MAC address, PC1 announces or broadcast through Address Resolution Protocol (ARP). How would PC1 figure out R3’s Unicast MAC Address for the first time? Note: Unicast Address is the mostly used Media Access Control Address among network devices. It is a 12-digit Hexadecimal with most of the time carries the following value, this is an official (IANA) Multicast address. To a specific group – Frames sent using Multicast Ethernet address will be copied and forwarded to a subset of devices on the LAN that volunteers to receive such frames which sent to a specific multicast address – for specific group only and NOT to everyone. Meaning to everyone – Frames sent using this address should be delivered, received, and processed by all devices on the Ethernet LAN or VLAN.īroadcast conclude 12-digit Hexadecimal address with value of inserted into the destination filed of the Frame. So the IEEE defines categories of group addresses for Ethernet communications: A frame sent to a group of addresses might be delivered to a small set of devices on the LAN, or even to all devices (everyone) on the LAN. Group addresses identify more than one LAN interface card. In addition to unicast addresses, Ethernet also uses group addresses. Every MAC address represent a single NIC in the world hence, it is called Unicast (Unique) Global Address.
CONVERSATION MAC ADDRESS LEARNING FOR MAC
Is another name for MAC address or an Ethernet Address.