ā02-23-2021 04:00 PM
NOTWORKING: | WORKING |
SWITCH 1 | SWITCH 1 |
conf t | conf t |
hostname switch 1 | hostname switch 1 |
int GI1/1/1 | int GI1/1/1 |
no switchport | no switchport |
no shut | no shut |
ip address 10.10.30.2 255.255.255.0 | ip address 10.10.30.2 255.255.255.0 |
int vlan 10 | int vlan 10 |
ip address 10.10.10.1 255.255.255.0 | ip address 10.10.10.1 255.255.255.0 |
ip routing | ip routing |
router ospf 1 | router ospf 1 |
network 10.10.10.1 0.0.0.0 area 1 | network 10.10.10.1 0.0.0.0 area 1 |
network 10.10.30.2 0.0.0.0 area 1 | network 10.10.30.2 0.0.0.0 area 0 |
SWITCH 2 | SWITCH 2 |
conf t | conf t |
hostname switch 2 | hostname switch 2 |
int GI1/1/1 | int GI1/1/1 |
no switchport | no switchport |
no shut | no shut |
ip address 10.10.40.2 255.255.255.0 | ip address 10.10.40.2 255.255.255.0 |
int vlan 11 | int vlan 11 |
ip address 10.10.20.1 255.255.255.0 | ip address 10.10.20.1 255.255.255.0 |
ip routing | ip routing |
router ospf 1 | router ospf 1 |
network 10.10.20.1 0.0.0.0 area 2 | network 10.10.20.1 0.0.0.0 area 2 |
network 10.10.40.2 0.0.0.0 area 2 | network 10.10.40.2 0.0.0.0 area 0 |
ROUTER | ROUTER |
conf t | conf t |
int gig0/0 | int gig0/0 |
no shut | no shut |
ip address 10.10.30.1 255.255.255.0 | ip address 10.10.30.1 255.255.255.0 |
int gig1/0 | int gig1/0 |
no shut | no shut |
ip address 10.10.40.1 255.255.255.0 | ip address 10.10.40.1 255.255.255.0 |
router ospf 1 | router ospf 1 |
network 10.10.30.0 0.0.0.3 area 1 | network 10.10.30.0 0.0.0.3 area 0 |
network 10.10.40.0 0.0.0.3 area 2 | network 10.10.40.0 0.0.0.3 area 0 |
network 10.10.50.0 0.0.0.255 area 0 | network 10.10.50.0 0.0.0.255 area 0 |
When the uplinks between router and l3 switch is area o intervlan routing works, others areas it doesnt work
ā02-23-2021 04:49 PM
There is no area 0 link up so the router never exchange route,
Do
Inter loopback 0
Ip 1.1.1.1 255.255.255.255
Ip opsf x area 0
Do this in router and see effect
ā02-23-2021 05:16 PM
I added those configs. Still its not pinging, am able to ping from S2 10.10.30.1 not 30.2 and also not able to ping anything from s1 to s2.
ā02-23-2021 05:21 PM
you can attach PT file in a zip format here for us to test it.
Regards, ML
**Please Rate All Helpful Responses **
ā02-23-2021 11:58 PM
Hello @nirak8833 ,
OSPF multi area design requires area 0 to be in the center of the routing domain with working links ( state up).
Each non backbone area needs to be connected to area 0 via an OSPF device taking part in both areas that is called an ABR Area Border Router.
For forming OSPF adjacencies the routers must agree on the area ID primary IP address and subnet mask and timers.
What you see is normal with LEFT config you are violating OSPF design rules for multi area.
Hope to help
Giuseppe
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