ocr: MAC header AC FC DA SA AC: Frame Access check control fieldDA: fieldF( ISA<bit47>=1 Destination addressSA: Source address Routing informationfield (RC) 2(n+1) bytes (0958) RC SN1 SN2 SNn 2 4 2 2 bytes SN: Segment (ring) numb n: Number of source bridge Routing B L D LF r controlfield 3 5 1 4 3 bits B:E Broadcast bits L: Length bits (max == 2+a) D:D Direction LF: Largest frame rreserved Figure 1 Routing Information and Routing Control Fields
(.png)
 (''Hack To The Future'')_iso/Dev.CD 199208.iso/Technical Documentation/Technical Notes Stack/Tech Note PICTs/Tech Note 309 - Figure 1/Tech Note 309 - Figure 1.png)