Ieee8022SnapHeader¶

Namespace: inet

class Ieee8022SnapHeader

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¶

Extends¶

Name	Type	Description
FieldsChunk	class	(no description)

Fields¶

Name	Type	Description
id	int
mutable	bool
complete	bool
correct	bool
properlyRepresented	bool
chunkLength	b
rawBin	string[]
rawHex	string[]
regionTags	SharingRegionTagSet::TagBaseRegionTag[]
chunkLength
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

Properties¶

Name	Value	Description
beforeChange	handleChange()
descriptor	readonly
existingClass
packetData

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