They use different encapsulation protocols.įor example, leased line (between two routers) and circuit switched network use HDLC, PPP and SLIP protocols. There are different networks exist in WAN. The links between different networks, the data is encapsulated into frames before they WAN stands for Wide Area Network.Īs there is a security concerns when data leaves the company premises and transport across We know that unlike LAN which is used in a single organization, WAN is used to connectĭifferent organizations across the cities and countries. This page on HDLC vs PPP describes basic difference between HDLC and PPP protocols. Optional VLAN tag for integration in VLAN networks (IEEE 802.HDLC vs PPP | difference between HDLC and PPP Hardware address of the source network adapter Hardware address of the destination network adapter Synchronization of the receiversBit sequence that initiates the frame From 1993 onwards, Novell itself recommended the "Ethernet 802.2" standard, which used the IEEE 802.3 frame, to avoid the likelihood of confusion with the "raw" frame. The use of this frame means extra work for the user, because compatibility issues can arise between devices. The name "IEEE 802.3raw" is also slightly misleading, since Novell used the protocol name without involving the IEEE in the development of the frame. The IEEE 802.3raw frame can only be used for the IPX protocol, because the type field's protocol ID is missing. This is the only way to distinguish a "raw" frame from other frames in the 802.3 family. In addition, the data to be transmitted is always prefixed with 2 bytes, which always consist of ones. 802.3raw frames do not contain a protocol identifier, as they are only usable for Novell IPX. This identifies the data packet as the 802.3 standard for the receiver. In contrast to the classic Ethernet II model, this frame defines an exact end to the bit sequence for the SFD.
Consequently, Novell added "raw" to the name. This rough version of the 802.3 packet, given the unfortunate name "Ethernet 802.3," was brought out by Novell before widespread establishment of IEEE 802.3 standards and the popular IPX/SPX protocol, unfortunately leading to frequent confusion with the IEEE standard. The type field was replaced by a length specification in later frame formats. In the OSI model, the network layer is important for connecting and providing network addresses. The packet is completed by an " Inter Frame Gap," which defines a 9.6 μs transmission pause.Įthernet II uses the classic frame structure with a type field ("Type") which defines various protocols of the network layer.
#WHAT IS THE DIFFERENCE BETWEEN ETHERNET FRAME AND PPP FRAME CODE#
A frame check sequence ( FCS) is an error-detecting code that closes the frame (except for the preamble and SFD). ” in which the actual frame contains information about source and destination addresses (MAC format), control information (in the case of Ethernet II the type field, later a length specification), followed by the transmitted data record. Both values are bit sequences in the format “ 10101010. The packet starts with a preamble that controls the synchronization between sender and receiver and a "Start Frame Delimiter" ( SFD) that defines the frame.
An Ethernet frame must be at least 64 bytes for collision detection to work, and can be a maximum of 1,518 bytes.
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