Ieee8022LlcHeader¶

Namespace: inet

class Ieee8022LlcHeader

This chunk represents an IEEE 802.2 LLC header as defined by the ANSI/IEEE Std 802.2, 1998, IEEE Standard for Information technology, Telecommunications and information exchange between systems, Local and metropolitan area networks.

0 1 2: 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3

| DSAP | SSAP | CONTROL | +—————+—————+—————+

Inheritance diagram¶

Extends¶

Name	Type	Description
FieldsChunk	class	(no description)

Known subclasses¶

Name	Type	Description
Ieee8022LlcSnapHeader	class	This chunk represents an IEEE 802.2 LLC header with SNAP extension as defined by the section 9.2.4 OUI Extended EtherType of the IEEE Std 802-2014, IEEE Standard for Local and Metropolitan Area Networks: Overview and Architecture.

Fields¶

Name	Type	Description
id	int
mutable	bool
complete	bool
correct	bool
properlyRepresented	bool
chunkLength	b
rawBin	string[]
rawHex	string[]
regionTags	SharingRegionTagSet::TagBaseRegionTag[]
chunkLength
dsap	short	1 byte
ssap	short	1 byte
control	int	1 or 2 byte, control = byte[0]+256*byte[1], two bytes, when (byte[0] & 3) != 3

Properties¶

Name	Value	Description
beforeChange	handleChange()
descriptor	readonly
existingClass
packetData

Source code¶

//
// This chunk represents an IEEE 802.2 LLC header as defined by the ANSI/IEEE
// Std 802.2, 1998, IEEE Standard for Information technology, Telecommunications
// and information exchange between systems, Local and metropolitan area networks.
//
//  0                   1                   2
//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
// +---------------+---------------+---------------+
// |      DSAP     |      SSAP     |    CONTROL    |
// +---------------+---------------+---------------+
//
class Ieee8022LlcHeader extends FieldsChunk
{
    chunkLength = B(3);
    short dsap = -1;    // 1 byte
    short ssap = -1;    // 1 byte
    int control = -1;    // 1 or 2 byte, control = byte[0]+256*byte[1], two bytes, when (byte[0] & 3) != 3
}

File: src/inet/linklayer/ieee8022/Ieee8022LlcHeader.msg