Greetings. I have a quick question that I haven't been able to answer in a CCO article:
When you have an OSPF ABR, and you configure it with the default-information originate command (without the "always" option) will that ABR stop injecting the default route if its own default route dies? In other words, router-A is an ABR and it has a static default to an ISP. The ABR injects a default via the default-information originate command. Let's say that the link between router-A and the ISP breaks... does router-A stop injecting the default route?
First a clarification: as Vlad correctly points out an OSPF router with default-information originate is an ASBR not an ABR.
Then the substantive answer to your question: an OSPF router configured with default-information originate (but without the always keyword) will only advertise a default route as long as it has a valid default route. And that router will stop advertising a default route is its default route becomes invalid.
Thank you both for the response. That makes sense. The documentation implied but did not specifically state that the removal of the default route (by link drop or whatever means) would in turn cause the ASBR to cease injecting the default.
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