Labels:text | screenshot | display | line | font | diagram | parallel | number OCR: SNA ENCAPSULATION: OVERHEAD COMPARISON Frame RFC 1490 SNA data unit relay header variable length TCP Source-route SNA data unit beader header bridging variable length hesdes Figure 1. This comparison of the two primary SNA encapsulation methods shows differences in the structure of packet headers. In each case, the SNA data unit is of variable length."
