118 Chapter 3: OSI Reference Model & Layered Communication
Figure 3-21
Routing Logic and Encapsulation--PC1 Sending to PC2
FR
PC1
PC2
R1
R2
R3
10.0.0.0
10.1.1.1
168.1.1.1
168.10.0.0
168.11.0.0
168.1.0.0
My route
to that group is
out Serial Link.
Send directly
to Barney.
My route
to that group is
out Frame
Relay.
Destination is in
another group; send
to nearby router.
Eth.
IP Packet
HDLC IP Packet
FR
IP Packet
TR
IP Packet
ch03.fm Page 118 Monday, March 20, 2000 4:58 PM