1 00:00:15,560 --> 00:00:16,580 In this lab. 2 00:00:16,580 --> 00:00:25,640 We've been asked to configure OSPF in a single area as follows We need to use process ID one on all 3 00:00:25,640 --> 00:00:27,950 of the routers on router one. 4 00:00:27,950 --> 00:00:34,250 We need to enable OSPF using the network command with an exact IP match. 5 00:00:34,930 --> 00:00:38,410 So we need to match the IP addresses on all interfaces. 6 00:00:38,410 --> 00:00:39,400 Exactly. 7 00:00:40,000 --> 00:00:46,960 On rather to we need to enable OSPF using the network command based on the subnet mask. 8 00:00:47,560 --> 00:00:51,160 So as an example, this interface has a slash 24 mask. 9 00:00:51,250 --> 00:00:58,510 This interface has a slash 24 mask and the loopback of the router will have a slash 32 mask. 10 00:00:58,750 --> 00:01:01,780 All routers have loopback configured. 11 00:01:01,930 --> 00:01:08,340 Use show commands on the routers to view the loopback addresses on router three. 12 00:01:08,350 --> 00:01:15,280 We need to enable OSPF using the interface command, so we need to enable OSPF on the interfaces and 13 00:01:15,280 --> 00:01:19,390 not use the network command and on right. 14 00:01:19,450 --> 00:01:26,020 For we need to enable OSPF on all interfaces using a single network command. 15 00:01:26,710 --> 00:01:29,140 So can you complete the slab? 16 00:01:29,170 --> 00:01:36,580 Download the packet, trace a file and see if you can get the network working per these instructions. 17 00:01:36,910 --> 00:01:44,140 In the next video I'm going to show you how to configure OSPF on these four routers in a single area 18 00:01:44,260 --> 00:01:45,910 as specified here. 19 00:01:46,480 --> 00:01:53,350 Before watching me do it, why not download the packet, trace a file and try it yourself?