Namespace inet

BpduBase

class

Represents a BPDU (Bridge PDU) used by the STP and RSTP protocols, as defined in the 802.1D-1998 specification.

Extends

Name	Type	Description
FieldsChunk	(unknown -- not in documented files)

Fields

Name	Type	Description
protocolIdentifier	BpduProtocolIdentifier	2 bytes, 0 for STP, 1 for RSTP (TODO use them)
protocolVersionIdentifier	BpduProtocolVersionIdentifier	1 byte, version ID, currently 0, // 3:MultipleSpanningTree
bpduType	BpduType	1 byte, 0 for Configuration BPDU, 1 for Topology Change Notification BPDU

Packet operations (observed)

action	module
peekAtFront	Stp

Source code

//
// Represents a BPDU (Bridge PDU) used by the STP and RSTP protocols,
// as defined in the 802.1D-1998 specification.
//
class BpduBase extends FieldsChunk
{
    BpduProtocolIdentifier protocolIdentifier = static_cast<BpduProtocolIdentifier>(-1);    // 2 bytes, 0 for STP, 1 for RSTP (TODO use them)
    BpduProtocolVersionIdentifier protocolVersionIdentifier = static_cast<BpduProtocolVersionIdentifier>(-1);    // 1 byte, version ID, currently 0, // 3:MultipleSpanningTree
    BpduType bpduType = static_cast<BpduType>(-1);    // 1 byte, 0 for Configuration BPDU, 1 for Topology Change Notification BPDU
}

File: src/inet/linklayer/ieee8021d/common/Ieee8021dBpdu.msg