IPX on CSMA/CD

• Ethernet format. Protocol type=8137 hex

• Raw 802.3 --- leave out all multiplexing! Start IPX packet where DSAP should be, so checksum covers DSAP and SSSAP

• SNAP ---DSAP=SSAP=SNAP (aa hex), protocol type=0.0.081.37

• 802.2 --- DSAP=LSAP=E0 hex

Cope with multiple formats by treating LAN as multiple logical LANs, and routers translate formats

A

R

b

A

R

b

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