We have two Internet connections, one in our main site and one in our DR site.
In both locations, we are receiving a default route via BGP and distributing that route into OSPF on the edge routers.
In both sites the edge routers have an OSPF adjacentcy with the firewall.
The firewalls have an OSPF adjacentcy with the core switches.
All internal routing in both locations is via OSPF in area 0, but OSPF is seperate at both locations, OSPF is only routing locally at each site.
The two locations are connected via BGP across a DS3 with 7206 routers. These routers are doing mutual reditribution between OSPF and BGP.
Both edge routers, both firewalls and both 7206 routers have OSPF default-information originate configured, with no metric set.
Everything is working, but I have some questions:
Internally, all routes advertised by the Firewall interfaces have an OSPF metric of 11, while the default route has a metric of 1.
Since no metric is set on the edge router distributing the BGP into OSPF, the metric should be 1, but with "default-information originate" distributing the default route, does it also distribute the originating metric as well?
For example, the firewall sees the default route with an ospf metric of 1
The firewall is also distributing the default route with "default-information originate" the core switches and the 7206 router see the default route with a metric of 1, while all other routes from the firewall have a metric of 11.
Is this by design?
Is it ok to have multiple configurations of "default-information originate" throughout an OSPF area?