Ieee8022SnapHeader

class

This chunk represents an IEEE 802.2 LLC header SNAP extension as defined by the section 9.5 SNAP of the IEEE Std 802-2014, IEEE Standard for Local and Metropolitan Area Networks: Overview and Architecture.

0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-----------------------------------------------+---------------+ | OUI | PROTOCOLID | +---------------+-------------------------------+---------------+ | PROTOCOLID | +---------------+

Inheritance diagram

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

Extends

Name	Type	Description
FieldsChunk	class	(no description)

Fields

Name	Type	Description
chunkLength	b
oui	int	organizationally unique identifier (OUI); 0 for protocols that have an EtherType (ARP, IPv4, IPv6, etc.), 3 bytes
protocolId	int	protocol identifier (PID); stores ~EtherType if orgCode is 0, 2 bytes
id	int
mutable	bool
complete	bool
correct	bool
properlyRepresented	bool
rawBin	string[]
rawHex	string[]
regionTags	SharingRegionTagSet::TagBaseRegionTag[]

Source code

//
// This chunk represents an IEEE 802.2 LLC header SNAP extension as defined by
// the section 9.5 SNAP of the IEEE Std 802-2014, IEEE Standard for Local and
// Metropolitan Area Networks: Overview and Architecture.
//
//  0                   1                   2                   3
//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
// +-----------------------------------------------+---------------+
// |                      OUI                      |   PROTOCOLID  |
// +---------------+-------------------------------+---------------+
// |   PROTOCOLID  |
// +---------------+
//
class Ieee8022SnapHeader extends FieldsChunk
{
    chunkLength = B(5);
    int oui = -1;   // organizationally unique identifier (OUI); 0 for protocols that have an EtherType (ARP, IPv4, IPv6, etc.), 3 bytes
    int protocolId = -1; // protocol identifier (PID); stores ~EtherType if orgCode is 0, 2 bytes
}

File: src/inet/linklayer/ieee8022/Ieee8022SnapHeader.msg