Ospfv3Packet

class

Common OSPFv3 packet header - this header is present in every OSPFv3 packet

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Extends

Name	Type	Description
ospf::OspfPacketBase	(unknown -- not in documented files)

Known subclasses

Name	Type	Description
Ospfv3DatabaseDescriptionPacket	class	Database Description Packet
Ospfv3HelloPacket	class	OSPFv3 hello packet
Ospfv3LinkStateAcknowledgementPacket	class	Link State Acknowledgement packet
Ospfv3LinkStateRequestPacket	class	Link State Request packet
Ospfv3LinkStateUpdatePacket	class	Link State Update packet

Fields

Name	Type	Description
chunkLength
version
instanceID	int8_t
reserved	uint8_t	RFC 5340 A.3.1. The OSPF Packet Header: Checksum: OSPF uses the standard checksum calculation for IPv6 applications: The 16-bit one's complement of the one's complement sum of the entire contents of the packet, starting with the OSPF packet header, and prepending a "pseudo-header" of IPv6 header fields, as specified in Section 8.1 of [IPV6]. The "Upper-Layer Packet Length" in the pseudo-header is set to the value of the OSPF packet header's length field. The Next Header value used in the pseudo-header is 89. If the packet's length is not an integral number of 16-bit words, the packet is padded with a byte of zero before checksumming. Before computing the checksum, the checksum field in the OSPF packet header is set to 0.

Source code

//Common OSPFv3 packet header - this header is present in every OSPFv3 packet
class Ospfv3Packet extends ospf::OspfPacketBase
{
    chunkLength = B(16);
    version = 3;
    int8_t instanceID;
    uint8_t reserved = 0;

    // RFC 5340 A.3.1.  The OSPF Packet Header: Checksum:
    //   OSPF uses the standard checksum calculation for IPv6 applications:
    //   The 16-bit one's complement of the one's complement sum of the
    //   entire contents of the packet, starting with the OSPF packet
    //   header, and prepending a "pseudo-header" of IPv6 header fields, as
    //   specified in Section 8.1 of [IPV6].  The "Upper-Layer Packet
    //   Length" in the pseudo-header is set to the value of the OSPF
    //   packet header's length field.  The Next Header value used in the
    //   pseudo-header is 89.  If the packet's length is not an integral
    //   number of 16-bit words, the packet is padded with a byte of zero
    //   before checksumming.  Before computing the checksum, the checksum
    //   field in the OSPF packet header is set to 0.
}

File: src/inet/routing/ospfv3/Ospfv3Packet.msg