Namespace inet::ospfv3

Ospfv3Packet

class

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

Extends

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

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.

Packet operations (observed)

action	module
peekAtFront	Ospfv3Process

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