1 00:00:06,150 --> 00:00:15,180 Okay, so on router 3 this network and this network are not directly connected, this network and this network 2 00:00:15,570 --> 00:00:17,180 are directly connected. 3 00:00:17,570 --> 00:00:30,660 So IP route destination network is 192.168.1.0 subnet mask is this or destination prefix mask. 4 00:00:30,900 --> 00:00:34,740 Mask used is 255.255.255.0, 5 00:00:34,740 --> 00:00:42,420 next-hop is 192.168.3.1. From router 3s point of view when sending traffic to this network, 6 00:00:42,480 --> 00:00:56,270 this is the next-hop IP route 192.168.2.0 mask next-hop is 192.168.3.1. So now show 7 00:00:56,270 --> 00:01:04,250 IP route on router 3 we can see two static routes have been added to the routing table and now 8 00:01:04,280 --> 00:01:15,440 when we do a trace from router 1 to the DNS server notice the trace succeeds this router can ping the 9 00:01:15,440 --> 00:01:29,290 DNS server. So on PC 1 IP address of PC is this default gateway is router 1 can we ping the DNS 10 00:01:29,290 --> 00:01:40,450 server 172.16.1.2? Yes, we can. If we trace to that we can see that the traffic goes to router 11 00:01:40,450 --> 00:01:54,310 1, router 2, router 3, and then the DNS server. So if I open up a web browser, can the PC connect to Cisco 12 00:01:54,310 --> 00:01:56,870 .com? Yes it can. 13 00:01:57,070 --> 00:02:04,750 So we can connect to this packet tracer Cisco.com server and we can do that using the DNS name. 14 00:02:05,770 --> 00:02:16,280 In other words, the name has been resolved by the DNS server and we can ping Cisco.com and we can trace 15 00:02:17,270 --> 00:02:29,010 to Cisco.com. What about on PC 2? Can PC 2 connect to Cisco.com? Yes, it can. We can browse 16 00:02:29,010 --> 00:02:37,860 to the Cisco Web site and we can ping Cisco dot com so we've successfully configured static grants on 17 00:02:37,950 --> 00:02:43,680 these routers. Show IP route shows us the IP routing table 18 00:02:43,930 --> 00:02:44,390 router 19 00:02:44,380 --> 00:02:53,960 1 has two static routes configured both with the next hop of router 2, router 2 has two static routes 20 00:02:53,960 --> 00:03:04,340 configured one pointing to router 3, one pointing to router 1, and router 3 has two static routes 21 00:03:04,340 --> 00:03:10,140 configured both pointing back to router 2. 22 00:03:10,170 --> 00:03:18,360 In other words, the next hop for both of these static routes is router 2, router 3 should as an 23 00:03:18,360 --> 00:03:26,520 example be able to ping router 1 and router 3 should be able to ping the IP addresses of the 24 00:03:26,520 --> 00:03:28,960 PCs which it can. 25 00:03:29,130 --> 00:03:37,710 So as an example on PC 2 we can see that PC 2 has this IP address and router 3 is able 26 00:03:37,710 --> 00:03:47,170 to ping that IP address. In this lab but we're also told to make sure that switch one can ping the DNS server. 27 00:03:47,370 --> 00:03:51,500 In other words, the switch needs to be able to ping the DNS server. 28 00:03:56,070 --> 00:03:59,210 The switches configured with this IP address 29 00:04:02,150 --> 00:04:13,340 192.168.125.3 show IP route shows us that the default gateway is not set and the routing table 30 00:04:13,340 --> 00:04:17,570 has the statement ICMP redirect caches empty. 31 00:04:17,750 --> 00:04:25,010 That means that IP routing is not enabled on the router which means that we need to configure a default 32 00:04:25,280 --> 00:04:31,490 gateway on the switch pointing to router 1. 33 00:04:31,490 --> 00:04:38,630 So we need to configure the switch with that default gateway so show IP route now displays that 34 00:04:38,690 --> 00:04:42,770 the default gateway is router 1. 35 00:04:42,800 --> 00:04:50,860 So we should be able to ping the DNS server took it a while but it's now working and we should be 36 00:04:50,860 --> 00:05:05,080 able to ping cisco.com if we configure a name server so IP name server 172.16.1.2 IP domain look 37 00:05:05,080 --> 00:05:06,810 up. 38 00:05:07,810 --> 00:05:16,640 Let's see if we can ping cisco.com notice the domain name has been translated and we have IP 39 00:05:16,640 --> 00:05:19,470 connectivity to Cisco.com. 40 00:05:19,670 --> 00:05:28,160 So I've successfully completed this lab I've configured static routes on these three routers I'll save 41 00:05:28,280 --> 00:05:38,440 the configuration as the last step. One more thing I'll do is fix this switch name should be host switch 42 00:05:38,440 --> 00:05:50,490 2 and on VLAN 1 I'll set the IP address to use DHCP so show IP interface brief we can see now that 43 00:05:50,490 --> 00:05:58,390 to this host has this IP address. In other words, an IP address has been allocated by the DHCP server in 44 00:05:58,390 --> 00:06:08,100 the right subnet its DHCP server is configured on this server. How did you do? 45 00:06:08,100 --> 00:06:10,680 Were you able to complete the lab? 46 00:06:10,890 --> 00:06:16,890 It's important that you know how to configure, verify and troubleshoot static routes for the CCNA 47 00:06:16,890 --> 00:06:17,430 exam.