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Router connection

s3988111
Level 1
Level 1

Hi everyone. I've made up this topology and just done everything that i could to make it work. The devices within its vlan can ping each other just fine but it cannot ping across the router. My theory is that there is something wrong with the serial DCE connection between routers. Any suggestion and help is appreciated thanks.

2 Accepted Solutions

Accepted Solutions

Harold Ritter
Cisco Employee
Cisco Employee

Hi @s3988111 ,

You need to enable ospf on the serial interfaces as follow:

Altona:

router ospf 100 

network 222.22.2.1 0.0.0.0 area 0

Broadmeadows:

router ospf 100 

network 222.22.2.2 0.0.0.0 area 0

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

View solution in original post

Hi @s3988111 

 Just a reminder. Your PCs are not getting IP address, only the Printers and this is happening because the DHCP exclude address is not good.

 Use this command here:

Broadmeadows:

ip dhcp excluded-address 192.47.89.1 192.47.89.5

ip dhcp excluded-address 192.47.89.65 192.47.89.69

ip dhcp excluded-address 192.47.89.97 192.47.89.100

 

Altona:

ip dhcp excluded-address 192.47.88.1 192.47.88.5

ip dhcp excluded-address 192.47.88.129 192.47.88.132

ip dhcp excluded-address 192.47.88.193 192.47.88.197

 

After that, you need to add route. If you are not familiar with Dynamic Routing protocol like OSPF, you can use default route like this:

 

Altona:

ip route 0.0.0.0 0.0.0.0 222.22.2.2

 

Broadmeadows:

ip route 0.0.0.0 0.0.0.0 222.22.2.1

View solution in original post

4 Replies 4

Harold Ritter
Cisco Employee
Cisco Employee

Hi @s3988111 ,

You need to enable ospf on the serial interfaces as follow:

Altona:

router ospf 100 

network 222.22.2.1 0.0.0.0 area 0

Broadmeadows:

router ospf 100 

network 222.22.2.2 0.0.0.0 area 0

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

Thanks a lot for the help the topology is working now.

You are very welcome @s3988111 and thanks for the feedback

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

Hi @s3988111 

 Just a reminder. Your PCs are not getting IP address, only the Printers and this is happening because the DHCP exclude address is not good.

 Use this command here:

Broadmeadows:

ip dhcp excluded-address 192.47.89.1 192.47.89.5

ip dhcp excluded-address 192.47.89.65 192.47.89.69

ip dhcp excluded-address 192.47.89.97 192.47.89.100

 

Altona:

ip dhcp excluded-address 192.47.88.1 192.47.88.5

ip dhcp excluded-address 192.47.88.129 192.47.88.132

ip dhcp excluded-address 192.47.88.193 192.47.88.197

 

After that, you need to add route. If you are not familiar with Dynamic Routing protocol like OSPF, you can use default route like this:

 

Altona:

ip route 0.0.0.0 0.0.0.0 222.22.2.2

 

Broadmeadows:

ip route 0.0.0.0 0.0.0.0 222.22.2.1

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