Message EtherFrameWithSNAP

File: NetworkInterfaces/Ethernet/EtherFrame.msg

C++ definition: click here

Ethernet frame with 802.3 LLC and SNAP headers.

The fields ssap, dsap and control are not included in the class because they are always set to fixed values: 0xAA, 0xAA, 0x03.

Header length: src(6)+dest(6)+length(2)+ssap(1)+dsap(1)+control(1)+ orgCode(3)+localCode(2) = 22 bytes

Inheritance diagram:

The following diagram shows part of the inheritance hierarchy. Unresolved types are missing from the diagram. Click here to see the full picture.

Extends:

EtherFrame

Common base class for classes representing Ethernet II and 802.3 frame types, containing their common header fields.

Fields:

Name Type Description
orgCode long

SNAP organization code, 0 for IP and ARP

localcode int

SNAP local code (stores EtherType for IP and ARP)

Source code:

message EtherFrameWithSNAP extends EtherFrame
{
    fields:
        long orgCode;  // SNAP organization code, 0 for IP and ARP
        int localcode; // SNAP local code (stores EtherType for IP and ARP)
};