Route/Ospf Metric/Distance

RouterOS General
1

Hi,

I’m about to do a cleanup of my network and have a look into ospf
and route selection process in my network.

What I am missing is some information in ROS what metrices
my routes actually have.

I see distance, scope and target scope as route attributes.

Distance seems to be the same as on cisco: A parameter
to priorize Routingprotocols. So all ospf learned routes have
the same distance. But where is the actual distance/metrik to
my target ip.

What are these scopes?

Using routing-test on 2.9.42.

Stefan

2

MikroTik RouterOS default distances are the following,
protocol default distance

connected 0
static 1
BGP (external) 20
OSPF 110
RIP 120
BGP (iBGP) 200
It is possible to change distance by using ‘routing filter’ feature.

3

i’d guess one will see different distances only, when exporting routes from one routing protocol into another.

4

Thanks. But what I’m missing is:

---------------------->8---------------------
gw2>sh ip route 1.1.1.1
Routing entry for 1.1.1.1/32
Known via “ospf 1”, distance 110, metric 11, type intra area
Last update from 213.185.129.196 on FastEthernet0/0, 00:01:22 ago
Routing Descriptor Blocks:

  • 213.185.129.196, from 213.185.129.196, 00:01:22 ago, via FastEthernet0/0
    Route metric is 11, traffic share count is 1
    ----------------------8<----------------------

the metric field of the route.

My problem is to see why some routes with same distance
are installed via one router and not the other.

I’ve a complex installation with circles and want to
know exactly what will happen to my network when
one line goes down.

Stefan