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mcrose
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Seperate costs for OSPF external redistributed networks

Thu Dec 15, 2011 7:55 pm

As far as I can tell, it's impossible to set costs on external routes injected into a OSPF network by a ASBR. All external routes of a given type that are redistributed (connected, static, other ospf, bgp, rip) are only able to have a global cost set on an ospf instance level. In addition, I can't find any way to use a /routing filter to rewrite the ospf cost on egress from the router of matching network prefixes.

Is the above correct, or is there a way to have a router redistribute arbitrary routes (say, redistributing static) where one route will be redistributed with cost 10 and one will be redistributed with cost 50?

Edit: to clarify, I'm looking for something along the lines of:
router ospf 1
 redistribute connected subnets route-map control-conn
!
access-list 1 permit 192.168.100.0 0.0.0.255
route-map control-conn permit 10
 match ip address 1
 set metric 50
!
route-map control-conn permit 20
 set metric 10
!
Where all connected subnets are redistributed at a cost of 10 except 192.168.100.0/24, which is redistributed with a cost of 50.
 
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mrz
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Re: Seperate costs for OSPF external redistributed networks

Fri Dec 16, 2011 10:30 am

In current routing filter implementation route costs can't be changed.
 
chrpinedo
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Re: Seperate costs for OSPF external redistributed networks

Mon May 28, 2012 10:09 am

+1

Is this planned to be corrected in future RouterOS releases?

Christian

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