I'm sure I'm in the wrong here but I cannot figure out why the following logic would work? Wouldn't the source IP address in the packets from Host 10.1.1.1 have a source IP of S0/0/0 interface on R1 (R1 is the one on the left) therefore not being able to match the cmd in the ACL? pages in the book 615-616
Here is the text relating too this example:
"For example, Figure 22-9 repeats the same ACL shown earlier in Figure 22-7. The first line of that ACL matches the specific host address 10.1.1.1. If that ACL exist on router R2, placing that ACL as an inbound ACL on R2's S0/0/1 interface can work, because packets sent by host 10.1.1.1 on the left side of the figure can enter R2's S0/0/1 interface. However, if R2 enables ACL 1 on it F0/0 interface, for inbound packets, the ACL will never match a packet with source IP address 10.1.1.1, because packets sent by host 10.1.1.1 will never enter that interface. Packets sent by 10.1.1.1 will exit R2's F0/0 interface, but never enter it, just because of the network topology.
