Raw EtherType Datagrams
General
Using the raw EtherType message transfer mechanism, software associated with a CA can support (as in the Ethernet environment) standard protocols, including TCP and UDP as well as IPv4.
Raw EtherType Datagram Format
Figure 21-3 on page 546 illustrates the format of a Raw EtherType request packet (there are no response packets). The packet contains the following elements:
LRH:
- LRH:DLID is used to guide the packet through the IBA subnet to a router ingress port.
- LRH:SL defines the desired QoS for the packet's travel through this IBA subnet.
Raw Header (RWH) contains the EtherType field. It defines what type of protocol the encapsulated non-IBA packet adheres to (and therefore, the presence or absence of other Transport ...
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