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Frame Relay Applications: TCP/IP Suite - Page 5

 By Cisco Press
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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
(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 AddressVia 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 AddressVia DLCI
194.213.14.215194.213.14.214* 17
172.16.24.100172.16.24.100* 25
172.16.24.102172.16.24.102* 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 AddressVia DLCI
172.16.24.100172.16.24.100*317
194.213.14.214172.16.24.101348
172.16.24.101172.16.24.101*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.

This article was originally published on Jan 30, 2002
jfreund@internet.com
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