Cisco Packer Trace's three-tier switch + router sharing internet

Lab Environment:

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Experimental Purpose:

1, the three layer switch divides three VLANs, is Vlan2\vnal3\vlan4, and the VLAN IP is set to: 192.168.2.1, 192.168.3.1, 192.168.4.1 respectively.

2, on the three-layer machine on the FA0/1 port set to trunk port, FA0/4 join VLAN4, and F0/2 off two-layer port, and set the IP address 192.168.5.1.

3, set the two-layer switch, the FA0/1 port is set to trunk, and add FA0/2 join VLAN2,FA0/3 added VLAN3.

4. Turn on the router on the three-layer switch and set up the RIP router protocol to allow the data to be exchanged between VLANs.

5. Test the hosts of each VLAN for interoperability.

6, configure the IP address of the ROUTE0, and test each intranet host can ping 192.168.5.2.

7, because the router is not configured to reach the route, resulting in the intranet PC can not ping the 192.168.5.2, at this time we can configure the router protocol, so that the intranet can reach the router.

8, configure the IP address of the ISP router, and test whether the ROUTE0 can ping the IP address of the ISP 202.1.1.2; Also test whether the intranet host can ping the IP address of the ISP router.

9, Intranet is not able to ping the router IP address of the ISP, only on the ROUTE0 to configure NAT forwarding to achieve.

10. Whether the intranet host can ping the server under the ISP.

Experimental steps:

1, the three layer switch divides three VLANs, is Vlan2\vnal3\vlan4, and the VLAN IP is set to: 192.168.2.1, 192.168.3.1, 192.168.4.1 respectively.

Switch>enable

Switch#conf T

Enter configuration commands, one per line. End with cntl/z.

Switch (config) #hostname coresw

Coresw (config) #vlan 2

CORESW (Config-vlan) #exit

Coresw (config) #vlan 3

CORESW (Config-vlan) #vlan 4

CORESW (Config-vlan) #

Coresw (config) #int VLAN 2

CORESW (config-if) #

%link-5-changed:interface Vlan2, CHANGED state-to-up

CORESW (config-if) #ip add 192.168.2.1 255.255.255.0

CORESW (config-if) #no shutdown

CORESW (config-if) #exit

Coresw (config) #int VLAN 3

CORESW (config-if) #

%link-5-changed:interface Vlan3, CHANGED state-to-up

CORESW (config-if) #ip add 192.168.3.1 255.255.255.0

CORESW (config-if) #no shutdown

CORESW (config-if) #exit

Coresw (config) #int VLAN 4

CORESW (config-if) #exit

%link-5-changed:interface Vlan4, CHANGED state-to-up

CORESW (config-if) #ip add 192.168.4.1 255.255.255.0

CORESW (config-if) #no shutdown

2, the FA0/1 port is set to trunk port, FA0/4 join VLAN4, and F0/2 off the two-layer port, and set the IP address 192.168.5.1.

Coresw (config) #int FA0/1

CORESW (config-if) #switchport trunk Encapsulation dot1q

CORESW (config-if) #switchport mode trunk

Coresw (config) #int FA0/4

CORESW (config-if) #switchport mode access

CORESW (config-if) #switchport Access VLAN 4

CORESW (config-if) #no shutdown

CORESW (config-if) #exit

Coresw (config) #int FA0/2

CORESW (config-if) #no Switchport

CORESW (config-if) #ip add 192.168.5.1 255.255.255.0

CORESW (config-if) #no shutdown

3, set the two-layer switch, the FA0/1 port is set to trunk, and add FA0/2 join VLAN2,FA0/3 added VLAN3.

Switch>enable

Switch#conf T

Enter configuration commands, one per line. End with cntl/z.

Switch (config) #vlan 2

Switch (Config-vlan) #exit

Switch (config) #vlan 3

Switch (Config-vlan) #exit

Switch (config) #

Switch (config) #int FA0/1

Switch (config-if) #switchport mode trunk

Switch (config) #int FA0/2

Switch (config-if) #switchport mode access

Switch (config-if) #switchport Access VLAN 2

Switch (config-if) #exit

Switch (config) #int FA0/3

Switch (config-if) #switchport mode access

Switch (config-if) #switchport Access VLAN 3

Switch (config-if) #exit

4. Turn on the router on the three-layer switch and set up the RIP router protocol to allow the data to be exchanged between VLANs.

Coresw (config) #ip routing

Coresw (config) #router rip

CORESW (config-router) #ver 2

CORESW (config-router) #no au

CORESW (config-router) #net 192.168.2.0

CORESW (config-router) #net 192.168.3.0

CORESW (config-router) #net 192.168.4.0

CORESW (config-router) #net 192.168.5.0

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6, configure the IP address of the ROUTE0, and test each intranet host can ping 192.168.5.2.

Router>enable

Router#conf T

Enter configuration commands, one per line. End with cntl/z.

Router (config) #int gi0/0

Router (config-if) #ip add 192.168.5.2 255.255.255.0

Router (config-if) #no shutdown

Router (config) #int GI0/1

Router (config-if) #ip add 202.1.1.1 255.255.255.0

Router (config-if) #no shutdown

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7, because the router is not configured to reach the route, resulting in the intranet PC can not ping the 192.168.5.2, at this time we can configure the router protocol, so that the intranet can reach the router.

Router (config) #router rip

Router (config-router) #ver 2

Router (config-router) #net 192.168.2.0

Router (config-router) #net 192.168.3.0

Router (config-router) #net 192.168.4.0

Router (config-router) #net 192.168.5.0

Router (config-router) #default-information originate// its role is to assign a default route to our three-tier router out!

Router (Config-router) #end

Router#show IP route

Codes:l-Local, 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, E-EGP

I-is-is, 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 are not set

R 192.168.2.0/24 [120/1] via 192.168.5.1, 00:00:05, gigabitethernet0/0

R 192.168.3.0/24 [120/1] via 192.168.5.1, 00:00:05, gigabitethernet0/0

R 192.168.4.0/24 [120/1] via 192.168.5.1, 00:00:05, gigabitethernet0/0

192.168.5.0/24 is variably subnetted, 2 subnets, 2 masks

C 192.168.5.0/24 is directly connected, gigabitethernet0/0

L 192.168.5.2/32 is directly connected, gigabitethernet0/0

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8, configure the IP address of the ISP router, and test whether the ROUTE0 can ping the IP address of the ISP 202.1.1.2; Also test whether the intranet host can ping the IP address of the ISP router.

Router>enable

Router#conf T

Enter configuration commands, one per line. End with cntl/z.

Router (config) #hostname ISP

ISP (config) #int gi0/0

ISP (config-if) #ip add 202.1.1.2 255.255.255.0

ISP (config-if) #no shutdown

ISP (config-if) #exit

ISP (config) #int GI0/1

ISP (config-if) #ip add 202.1.2.1 255.255.255.0

ISP (config-if) #no shutdown

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9, Intranet is not able to ping the router IP address of the ISP, only on the ROUTE0 to configure NAT forwarding to achieve.

Router#conf T

Enter configuration commands, one per line. End with cntl/z.

Router (config) #access-list 1 Permit 192.168.2.0 0.0.0.255

Router (config) #access-list 1 Permit 192.168.3.0 0.0.0.255

Router (config) #access-list 1 Permit 192.168.4.0 0.0.0.255

Router (config) #access-list 1 Permit 192.168.5.0 0.0.0.255

Router (config) #ip nat inside source List 1 interface GI0/1 overload

Router (config) #int GI0/1

Router (config-if) #ip Nat outside

Router (config-if) #exit

Router (config) #int gi0/0

Router (config-if) #ip nat inside

Router (config-if) #exit

Router (config) #ip Route 0.0.0.0 0.0.0.0 GI0/1

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10. Whether the intranet host can ping the server under the ISP.

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Cisco Packer Trace's three-tier switch + router sharing internet