Lab 6.1.2 Creating a Network Diagram From Routing Tables
Step 1:Examine the routing table entries for the router R1
a. Examine show ip route output from router R1 shown below
b. How many networks does router R1 know about? Lima networks
c. How many networks are directly connected to this router? Tiga networks
d. How many networks have been learned from another router? Dua network
e. Using the codes at the beginning of the show ip route output what does the ‘R’ mean? R adalah router
f. In the routers learned via RIP to which device does the ip address 172.17.0.2 belong? Ya ada
a. In the routers learned via RIP to which device is serial 0/0 referring and what does it mean? 0/0 adalah interfacenya yaitu menampilkan informasi khusus hardware interface. Perintah ini harus di-set termasuk nomor port/slot dari interface serial.
Step 2: Examine the routing table entries for the router R2
b. Examine show ip route output from router R2 shown below
c. How many networks does router R2 know about? Lima networks
d. How many networks are directly connected to this router? Tiga networks
e. How many networks have been learned from another router? Dua networks
f. Using the codes at the beginning of the show ip route output what does the ‘R’ mean? R adalah router
g. In the routers learned via RIP to which device does the ip address 172.17.0.2 belong? Ya ada
h. In the routers learned via RIP to which device is serial 0/0 referring and what does it mean? Serial 0/0 adalah interface –nya yaitu menampilkan informasi khusus hardware interface. Perintah ini harus di-set termasuk nomor port/slot dari interface serial.
Step 3: document router interfaces and IP addresses
a. Based on the shown ip router output from R1 and R2
Device | interface | IP Address | Subnet mask (dotted decimal and/xx) |
R1 | 0/0 | 172.17.0.0 | 255.255.0.0/16 |
R1 | 0/0 | 192.168.1.0 | 255.255.255.0/24 |
R1 | 0/1 | 192.168.2.0 | 255.255.255.0/24 |
R2 | 0/0 | 172.17.0.0 | 255.255.0.0/16 |
R2 | 0/0 | 192.168.3.0 | 255.255.255.0/24 |
R2 | 192.168.4.0 | 255.255.255.0/24 |
b. In this example can the exact IP address of all router interface be determined by looking at the routing tables? Ya bisa
c. Which router interface IP address can be determined from the routing tables? Interface 0/0 dan 0/1
Step 4: create a network topology diagram
Step 5: reflection
a. What do you think would happen to the entries in the routing table on R1 if one of the enthernet networks on R2 was disconnected? Maka pemrosesan sinyal untuk data jaringan computer akan terputus atau tidak akan terjadi.
- What do you think would happen to the entries in the routing tables on R1 and R2 if the serial interface on R2 was shut down? Jawab: Even though the IP address is configured on both ends of the link, the entry would no longer appear as directly connected in either routing table since the link is down. No RIP updates would pass between the routers since there is no WAN link. Neither router would know about either of the Ethernet networks on the other router.
Lab 6.1.5 Configure and Verify RIP
Step 1: Build the network and configure the routers
Step 2: Check the routing table entries
a. View the IP routing table for R1 using the show ip route command:
b. What is the significance of the “C” to the left of the 172.16.0.0 and 172.17.0.0 network entries in the routing table? Pada IP 172.16.0.0 menggunakan interface type DCE sedangkan pada IP 172.17.0.0 menggunakan interface type DTE.
Step 3: Configure the routing protocol of the routers
Step 4: Configure the hosts with the proper IP address, subnet mask, and default gateway
a. Configure the host attached to R1 with an IP address, subnet mask and default gateway that is compatible with the IP address of the Fast Ethernet interface (172.16.0.0).
b. Configure the host attached to R2 with an IP address, subnet mask and default gateway that is compatible with the IP address of the Fast Ethernet interface (172.18.0.0).
c. Verify that the internetwork is functioning by pinging the Fast Ethernet interface of the other router.
d. From the host attached to R1, is it possible to ping the R2 router Fast Ethernet interface? Ya mungkin karena sudah menggunakan gateway yang akan menghubungkan dua buah jaringan yang berbeda.
e. From the host attached to R2, is it possible to ping the R1 router Fast Ethernet interface? Ya mungkin karena sudah menggunakan gateway yang akan menghubungkan dua buah jaringan yang berbeda.
f. If the answer is no for either question, troubleshoot the router configurations to find the error. Then do the pings again until the answer to both questions is yes. Be sure to check physical cabling for problems and bad connections and make sure that you are using the correct cable types.
Step 5: Show the routing tables for each router
a. In enable or privileged EXEC mode, examine the routing table entries using the show ip route command on router R1.
b. What are the entries in the R1 routing table? R1 terkoneksi pada jaringan 172.17.0.0/16 dan 172.16.0.0/16
c. What is the significance of the “R” to the left of the 172.18.0.0 network entry in the routing table? 172.18.0.0 terhubung ke jaringan melalui 172.17.0.2
d. What does “via 172.17.0.2” mean for this network route? Router mempelajari melalui RIP dengan device 172.17.0.2
e. What does “Serial0/0” mean for this network route? Serial interfacenya atau port/slot
f. Examine the routing table entries using the show ip route command on router R1.
g. What are the entries in the R2 routing table? 172.16.0.0/16
Step 6: Use debug to observe RIP communications
a. On router R1, enter the debug ip rip command from privileged EXEC mode. Examine the exchange of routes between the two routers. The output should look similar to that shown here.
b. Enter the command undebug all to stop all debugging activity
c. What interface does router R1 send and receive updates through? R1 mengirim ke alamat 224.0.0.9 dan R1 menerima dari 172.17.0.2
d. Why does the route to 172.17.0.0 have metric of 1 and the route to 172.18.0.0 have a metric of 2? Karena pada ruter ke 172.17.0.0 memiliki satu lompatan atau terkoneksi langsung sehingga disebut 1 metric sedangkan 172.18.0.0 memiliki dua lompatan karena tidak terkoneksi secara langsung melainkan melalui router lain.
e. Log off by typing exit and turn off the router.
Step 7: Reflection
a. What do you think would happen to the routing table on router R1 if the Ethernet network on router R2 went down? Koneksi antara R1 dan R2 akan terputus
b. What do you think would happen if router R1 was configured to run RIPv1, and R2 was configured to run RIPv2? Maka router dapat berkomunikasi dengan router lain sehingga dapat menetukan jalan yng terbaik dalam pengiriman paket data tanpa memperhatikan subnet, konfigurasi ini di butuh kan untuk proses routing untuk menentukan interface mana yang akan mengirim data atau menerima.
Lab 6.2.5 Configuring BGP with Default Routing
Step 1: Configure basic information on each router
Step 2: Configure the default and static routes
Step 3: Configure BGP on both ISP routers
Step 4: View the Routing Tables
a. ISP2#show ip route
1) Is network 192.168.1.0 in the routing table of ISP2? Ya ada
2) What letter is at the left of the entry for 192.168.1.0? ‘B’
3) What does the letter mean?
4) Is network 192.168.100.0 in the routing table? Ya ada
5) Which router advertised network 192.168.1.0? 172.16.1.1? ISP1
b. ISP1#show ip route
1) What network(s) did ISP1 learn from ISP2? 192.168.200.0
2) How did ISP1 learn about network 192.168.1.0? jawab: A static route was configured on ISP1 and a network entry was added when BGP was configured,so that it would be advertised via BGP.
3) Will ISP1 advertise any networks to the customer router? tidak
c. CR#show ip route
1) Why are networks 192.168.100.0 and 192.168.200.0 not in CRs routing table? Karena semua lalu lintas dari jaringan 192.168.100.0 dan 192.168.200.0 akan menggunakan ISP1 sehingga kedua jaingan ini tidak terdapat di routing table ISP2
Step 5: Verify connectivity
Step 6: View BGP information on the ISP routers
Step 7: Reflection
Why doesn’t ISP1 advertise any networks to the customer router? Karena setiap jaringan sudah di atur menggunakan ISP yang mana, jadi tidak semua jaringan ynag ada di ISP1 di izinkan untuk menggunakan pelayanan router lainnya.
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