Solved: ospf problem path selection - Page 2

Hossein Forghani · ‎05-22-2018

in above scenario ospf , when the connection between two switches was downed.(in any reason )router R4 can not ping 192.168.13.1 ( R1 interface 0/1) . in this situation we want ping this ip with path up ( R2--R1) . how can handle this problem ??
thanks...

mohamad ebrahimi · ‎05-27-2018

Hofo

Your problem has already been my problem.in this situation, you should use tunnel with static route for solve problem.

R1#

interface Loopback1
ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
ip address 192.168.12.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 192.168.13.1 255.255.255.0
duplex auto
speed auto
!
interface tunnel 10
ip address 192.168.113.1 255.255.255.0
tunnel source 1.1.1.1
tunnel destination 3.3.3.3

router ospf 1
network 192.168.12.0 0.0.0.255 area 0
network 192.168.13.0 0.0.0.255 area 0

network 1.1.1.1 0.0.0.0 area 0
!
ip route 192.168.13.3 255.255.255.255 192.168.113.3

R3#

interface Loopback1
ip address 3.3.3.3 255.255.255.255
!
interface FastEthernet0/0
ip address 192.168.34.3 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 192.168.13.3 255.255.255.0
duplex auto
speed auto
!
interface tunnel 10
ip address 192.168.113.3 255.255.255.0
tunnel source 3.3.3.3
tunnel destination 1.1.1.1

router ospf 1
network 192.168.34.0 0.0.0.255 area 0
network 192.168.13.0 0.0.0.255 area 0
network 3.3.3.3 0.0.0.0 area 0
!
ip route 192.168.13.1 255.255.255.255 192.168.113.1

i use tunnel gre because when static route want to get 192.168.13.0 in any two router R1 can not reach R3.with this channel you can solve your problem.

HTH

Hossein Forghani · ‎05-27-2018

thanks mohamad ebrahimi

your solution solve my problem.this solution in my network very suitable.

HOFO