OSPF learned routes through the same neighbors with two links

From: ISolveSystems (support@isolvesystems.com)
Date: Mon Jun 23 2008 - 23:42:51 ART

Hello Expert,
ASA and FWSM are neighbor via INSIDE and DMZ interfaces in the same area.

FWSM is the DR for INSIDE interface.
They are 2WAY/DROTHER on the DMZ interface.

I am finding that ASA is learning Interarea routes through DMZ interface;
External routes through INSIDE interface from FWSM.

What determined what routes are learned from which interface?

Thanks.

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