OSPF Help

RouterOS General
1

Hello guys,

I have a problem with OSPF I tried every possible way I have gone through a lot of articles located here but I still cannot get OSPF working. On the devices when I do a monitor it shows that is running but I cannot see any added routes or any relevant information travelling in the net.

My config is as follows.

R1(3.9)(10.200.1.1)<-------->(10.200.1.2)R2(3.9)(10.200.2.1)<--------->(10.200.2.2)R3(10.200.3.1)
| | |
subnet(10.200.1.0/24) subnet(10.200.2.0/24) subnet(10.200.3.0/24)

The routing tables do not update.
I should mention this is a lab where I test routers before deployment and their capabilities.
Is ther any bug in OSPF or some kind of limitation???
I have also read the MT manual but no help in there…

Can anyone help me or has tried any step by step manual that can help the situation???

Thanks

Sotiris

2

Probably you forgot to set to redistribute routes.

For example:
/routing ospf
set redistribute-connected=as-type-1

3

I did that and I have setup the main OSPF router properly but again no luck. Am I missing something here???
Like setting up filters and all those things???

Sotiris

4

can you see neighbors in ‘/routing ospf neighbor’ list?

What are ospf configurations for all three routers?

5

No I cannot see the neighbors.

Main OSPF router

add area-id=0.0.0.0 authentication=none disabled=no name=“backbone” type=default
add area-id=0.0.0.1 authentication=none disabled=no name=“local_area” type=default
/routing ospf
set distribute-default=if-installed-as-type-2 metric-bgp=20 metric-connected=20 metric-default=1 metric-rip=20
metric-static=20 mpls-te-area=unspecified mpls-te-router-id=unspecified redistribute-bgp=no
redistribute-connected=as-type-1 redistribute-rip=no redistribute-static=as-type-1 router-id=0.0.0.0
/routing ospf network
add area=local_area disabled=no network=10.200.2.0/24

R2

add area-id=0.0.0.0 authentication=none disabled=no name=“backbone” type=default
add area-id=0.0.0.1 authentication=none disabled=no name=“local_area” type=default
/routing ospf
set distribute-default=never metric-bgp=20 metric-connected=20 metric-default=1 metric-rip=20
metric-static=20 mpls-te-area=unspecified mpls-te-router-id=unspecified redistribute-bgp=no
redistribute-connected=as-type-1 redistribute-rip=no redistribute-static=no router-id=0.0.0.0
/routing ospf network
add area=local_area disabled=no network=10.200.1.0/24
add area=local_area disabled=no network=10.200.3.0/24

R3


add area-id=0.0.0.0 authentication=none disabled=no name=“backbone” type=default
add area-id=0.0.0.1 authentication=none disabled=no name=“local_area” type=default
/routing ospf
set distribute-default=never metric-bgp=20 metric-connected=20 metric-default=1 metric-rip=20
metric-static=20 mpls-te-area=unspecified mpls-te-router-id=unspecified redistribute-bgp=no
redistribute-connected=as-type-1 redistribute-rip=no redistribute-static=no router-id=0.0.0.0
/routing ospf network
add area=local_area disabled=no network=10.200.2.0/24

6

I think that you have set incorrect networks.

According to your drawing networks should be:
On R1
10.200.1.0/24

On R2
10.200.1.0/24
10.200.2.0/24

On R3
10.200.2.0/24

7

Also make sure you are not blocking broadcasts between your routers. Some rules or radio links block broadcasts and that will not allow ospf to work.

Scott

8

How do I find out if my routers are blocking broadcasts or not???

9

enable ospf logs and you will see if hello messages are sent and received.
or run sniffer and look for received multicast packages.

10

Add a log rule before drop rule and watch logs. Or disable firewall for testing.

Stefan

11

Guys thanks for your help I got the OSPF up and running. My problem as you specified was that it was a missconfiguration about the networks each router is connected.

Thanks for the help.

:laughing: :laughing: :laughing: :laughing: :laughing: :laughing: :laughing:

Sotiris