DLCI
DLCI
1)Source and destination MAC Address 2)FCS Field
An Ethernet frame has a 14 byte header, a data section, and a 4 byte trailer 14 byte header consist of destination address, source address and type The trailer is for CRC (Cyclic redundancy Check) An Ethernet frame can contain an IP and TCP PDU. IP header most important parts consists of (Version,IHL, Total length,Protocol, source and destination address) In details (Version,Header length,Differentiated services field, total Length, Identification, Flags, fragment offset, Time to live, protocol, header checksum, source and destination address). TCP header most important parts consists of (Source port, Destination port and header Length) In details (Source Port, Destination Port, Sequence number, Acknowledgment number, Header length,Flags,Window and check sum). The details of the IP and TCP header have been taken from a Network protocol Analyzer Wireshark on my own pc.
physical source and destination addressesphysical source and destination addresses
physical source and destination addressesphysical source and destination addresses
mac address only
The destination address field in a frame refers to the physical (or MAC) address of the destination node.
Mac address only!
MAC
Frame Header - Network Header - Transport Header - Data - Frame Trailer
MAC addresses only
The switch learns the MAC address of the device connected to a port during port initialization. It will then send data out the port based upon the destination MAC address as specified the the packet header.