Connect the GNS3 Cisco router to the author’s home network and allow it to access the Internet.
- Connecting R1 Fa0/0 on GNS3 to home network
- DHCP Client Configuration
- Verifying communication between R1 and the Internet
1.Connecting R1 Fa0/0 on GNS3 to home network
Connect the R1 Fa0/0 on GNS3 to your home network. To do this, place a “Cloud” object in the workspace and set up a link between the “Cloud” and the R1 Fa0/0. The network adapter that the host connects to the home network is “Ethernet”. Therefore, the link between the “Cloud” and R1 Fa0/0 is set up with “Ethernet”.
The R1 Fa0/0 is now bridged to the home network through the host.
2.DHCP Client Configuration
To enable R1 Fa0/0 to be assigned an IP address via DHCP from the BB router. enter the following command from the R1 console.
interface FastEthernet0/0 ip address dhcp no shutdown
sYou can use the show dhcp lease command to verify IP addresses and other information assigned by DHCP. It also registers the default route in the routing table. The next hop of the default route is the IP address of the default gateway as notified by DHCP.
R1#show dhcp lease Temp IP addr: 192.168.1.26 for peer on Interface: FastEthernet0/0 Temp sub net mask: 255.255.255.0 DHCP Lease server: 192.168.1.1, state: 3 Bound DHCP transaction id: 333 Lease: 86400 secs, Renewal: 43200 secs, Rebind: 75600 secs Temp default-gateway addr: 192.168.1.1 Next timer fires after: 11:56:51 Retry count: 0 Client-ID: cisco-cc01.05ac.0000-Fa0/0 Client-ID hex dump: 636973636F2D636330312E303561632E 303030302D4661302F30 Hostname: R1 R1#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is 192.168.1.1 to network 0.0.0.0 C 192.168.1.0/24 is directly connected, FastEthernet0/0 S* 0.0.0.0/0 [254/0] via 192.168.1.1
3.Verifying communication between R1 and the Internet
Verify the communication between R1 and the Internet: ping Google’s Public DNS server at IP address 18.104.22.168.8 and you’ll get a response, indicating that you have a connection to the Internet.
R1#ping 22.214.171.124 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 126.96.36.199, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 4/10/12 ms
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