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sims
Explorer II
December 17, 2021
Question

routing help

  • December 17, 2021
  • 1 reply
  • 1588 views

 

Hi ,

 

I have the below topology . Here R1 is  conigured router on stick . switch 1 is L2

 

sims_1-1639718433245.png

 

 

sims_4-1639720378995.png

 

sims_5-1639720467606.png

 

 

 

 

R1

interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
media-type rj45
!
interface GigabitEthernet0/0.10
encapsulation dot1Q 10
ip address 10.0.10.1 255.255.255.0
!
interface GigabitEthernet0/0.20
encapsulation dot1Q 11
ip address 10.0.11.1 255.255.255.0
!

interface GigabitEthernet0/0.111
encapsulation dot1Q 111
ip address 172.16.1.9 255.255.255.0
end

!

 


router ospf 1
network 10.0.10.0 0.0.0.255 area 0
network 10.0.11.0 0.0.0.255 area 0

network 172.16.1.0 0.0.0.255 area 0

 

switch 1

 

Switch#sh run int gi0/1
Building configuration...

Current configuration : 132 bytes
!
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
media-type rj45
negotiation auto
end

Switch#sh run int gi0/2
Building configuration...

Current configuration : 132 bytes
!
interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport mode trunk
media-type rj45
negotiation auto
end

Switch#sh run int gi0/0
Building configuration...

Current configuration : 132 bytes
!
interface GigabitEthernet0/0
switchport trunk encapsulation dot1q
switchport mode trunk
media-type rj45
negotiation auto
end

 

The purpose is r1 want to learn all the network from fortigate .but it does not forming neighbourship

 

R1#sh ip ospf neighbor
R1#

please help 

 

 

 

 

 

 

 

1 reply

Toshi_Esumi
SuperUser
SuperUser
December 20, 2021

Not a routing problem, but switching problem. Cisco side is on VLAN 111, while FGT side is not VLAN tagged. You can't even ping between 172.16.1.9 and .10 each other.

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