Re: Cisco Packet Tracer EIGRP, Etherchannel, VLAN with Router on stick

ph1ntom · ‎05-25-2019

I did 3 different sites with different IPs, which I defined with VLSM then I also made a sub net from this.

The problem that I have is that I can not ping one location in another location because it always indicates that the host is unreachable.

I need a solution in the frame of EIGRP, Ether channel, VLAN, router-on-stick...

There is my file from packet tracer. 

So i have
Location number one:

1. Subnet
N: 172.20.12.0
B: 172.20.12.63
MIN IP: 172.20.12.1
MAX IP: 172.20.12.62

2. Subnet
N: 172.20.12.64
B: 172.20.12.127
MIN IP: 172.20.12.65
MAX IP: 172.20.12.126

Location number 2:

1. Subnet
N: 172.20.12.128
B: 172.20.12.191
MIN IP: 172.20.12.129
MAX IP: 172.20.12.190

2. Sub net
N: 172.20.12.192
B: 172.20.12.255
MIN IP: 172.20.12.193
MAX IP: 172.20.12.254 

Location number three:

1. Subnet
N: 172.20.13.0
B: 172.20.13.31
MIN IP: 172.20.13.1
MAX IP: 172.20.13.30

2. Subnet
N: 172.20.13.32
B: 172.20.13.63
MIN IP: 172.20.13.33
MAX IP: 172.20.13.62


And when i want to ping from Computer1 IP - 172.20.13.33 to Computer2 IP - 172.20.12.65 is unreachable host. 

Please help.

Edwin Portillo · ‎05-31-2019

Hi my Friend,

When you work with VLAN, you have to have many opportunities such as a good example, a correct network of ports and another access mode, another part when you connect between changes it is necessary to truncate those interfaces as the interface that connects the router.

Then, in the router, you must create the corresponding subinterfaces for each of them with the encapsulation and the intellectual property. As one of the last steps is a dynamic or static protocol for communication between the communication path and the routing protocol only the PCs connected to the same VLAN will communicate.

*****Switch área 1****
VLAN 2
Name ElSalvador
VLAN 3
Name SanMiguel

Interface range fa0/1-10
Switchport mode access
Switchport access vlan 2

Interface range fa0/11-23
Switchport mode access
Switchport access vlan 3

Interface fa 0/24
Switchport mode trunk <----conect to router

*****Switch área 2****
VLAN 4
Name ElSalvador
VLAN 5
Name SanMiguel

Interface range fa0/1-10
Switchport mode access
Switchport access vlan 4

Interface range fa0/11-23
Switchport mode access
Switchport access vlan 5

Interface fa 0/24
Switchport mode trunk <----conect to router

*****Switch área 3****
VLAN 6
Name ElSalvador
VLAN 7
Name SanMiguel

Interface range fa0/1-10
Switchport mode access
Switchport access vlan 6

Interface range fa0/11-23
Switchport mode access
Switchport access vlan 7

Interface fa 0/24
Switchport mode trunk <----conect to router

*******Router interface área 1*******
Interface g0/0 <-----conect to switch
No shutdown

Interface g0/0.2
Encapsulation dot1Q 2
Ip address 172.20.12.1 255.255.255.192

Interface g0/0.3
Encapsulation dot1Q 3
Ip address 172.20.12.65 255.255.255.192

Router eigrp 1
Network 172.20.12.0
Network 172.20.12.64
No auto-summary

*******Router interface área 2*******
Interface g0/1 <-----conect to switch
No shutdown

Interface g0/1.4
Encapsulation dot1Q 4
Ip address 172.20.12.129 255.255.255.192

Interface g0/1.5
Encapsulation dot1Q 5
Ip address 172.20.12.193 255.255.255.192

Router eigrp 1
Network 172.20.12.128
Network 172.20.12.192
No auto-summary

*******Router interface área 3*******
Interface g1/1 <-----conect to switch
No shutdown

Interface g1/1.6
Encapsulation dot1Q 6
Ip address 172.20.13.1 255.255.255.224

Interface g1/1.7
Encapsulation dot1Q 7
Ip address 172.20.13.65 255.255.255.224

Router eigrp 1
Network 172.20.13.0
Network 172.20.13.64
No auto-summary

To manage the channels, you could switch between the connections. It is important to emphasize that with Etherchannel there must be coherence between interfaces, FastEthernet with FastEthernet, Gigabit with Gigabit.