In the Information field, the Padding field is optional. The maximum length for the Information field, including the Padding field, is the maximum receive unit (MRU). The Information field contains the datagram for the protocol specified in the Protocol field.
#ADDRESS FIELD IN PPP FRAME CODE#
Packet that does not comply with these rules from a sender, the receiver considers the packet unrecognizable and sends a Protocol-Reject packet padded with the protocol code of the rejected packet to the sender.Ĭhallenge Handshake Authentication Protocol Values must be odd the least significant bit of the least significant byte must be "1". The structure of this field complies with the ISO 3309 extension mechanism for address fields. The Protocol field identifies the datagram encapsulated in the Information field of a PPP data packet. Identify a PPP packet, so the PPP packet header value is FF03. By default, PPP does not use sequence numbers or acknowledgement mechanisms to ensure transmission reliability. The Control field value defaults to 0x03, indicating an unsequenced frame. This field must be filled with a broadcastĪddress of all 1s and is of no significance to PPP. Two communicating devices connected by using PPP do not need to know the data link layer address of each other because PPP is used on P2P links.
The Flag field identifies the start and end of a physical frame and is always 0x7E.
The meanings of the fields are as follows:
0 kommentar(er)
