WEBVTT

1
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Three Cisco routers connect two loopbacks, with router two in the middle.

2
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The return path is ready, but router one has no route to the remote loopback yet.

3
00:00:25.200 --> 00:00:31.200
Add a static route through router two’s directly connected address.

4
00:00:32.500 --> 00:00:40.500
A ping from router one’s loopback confirms that traffic can go there and back.

5
00:00:44.900 --> 00:00:53.900
Replace the route with one that points to router two’s loopback as an indirect next hop.

6
00:00:57.000 --> 00:01:05.500
Add a route to that loopback so the destination route can enter the routing table.

7
00:01:06.650 --> 00:01:14.150
The forwarding table resolves the indirect next hop to router two’s connected address.

8
00:01:15.500 --> 00:01:21.500
Ping again to verify that the recursive route carries traffic.

9
00:01:26.050 --> 00:01:33.550
Remove the route that resolves the next hop and watch remote reachability fail.

10
00:01:34.600 --> 00:01:41.600
The directly connected neighbor still replies, so the local link still works.

11
00:01:46.100 --> 00:01:53.100
Restore the resolving route and confirm that the remote loopback replies again.
