Frame Relay Applications: TCP/IP Suite - Page 5
Inverse ARP and Routing Tables
The information learned via Inverse ARP is of significant use to IP routers. Using the network represented by Figure 15-21, suppose that Router D has message traffic to forward to Router A.
Figure 15-21: Four-Node Frame Relay WAN with IP Address and DLCI Assignments
(Click image for larger view in a new window)
Router D's routing table would look something like Table 15-11.
Table 15-11: Router D's Routing Table
Destination IP Address | Forwarding IP Address | Via DLCI |
172.16.24.100 | 194.213.14.215 | 105 |
172.16.24.102 | 194.213.14.215 | 105 |
172.16.24.101 | 194.213.14.215 | 105 |
Router B's routing table would look something like Table 15-12.
Table 15-12: Router B's Routing Table
Destination IP Address | Forwarding IP Address | Via DLCI |
194.213.14.215 | 194.213.14.214* | 17 |
172.16.24.100 | 172.16.24.100* | 25 |
172.16.24.102 | 172.16.24.102* | 37 |
Router C's routing table would look something like Table 15-13.
Table 15-13: Router C's Routing Table
Destination IP Address | Forwarding IP Address | Via DLCI |
172.16.24.100 | 172.16.24.100* | 317 |
194.213.14.214 | 172.16.24.101 | 348 |
172.16.24.101 | 172.16.24.101* | 348 |
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Our next segment from Cisco Press' Network Consultants Handbook will continue looking at Frame Relay applications and the Novell IPX Suite.
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