Symptoms
In some specific circumstances, the configuration ordering and activation timing in an HA configuration of OSPF inter-area (IA) routes might lead to one unit learning the route off the peer instead of learning it from the configuration.
Impact
A unit may prefer a route to the peer instead of a locally configured blackhole.
Conditions
- Two or more units using very close or identical OSPF configurations.
- Announcement of IA summary routes that locally are blackholed.
- One unit is configured before the others, in a way that the peers learn the route before the configuration is introduced locally.
Workaround
Do any of the following:
-- Restart the ospf process.
-- Run the command: clear ip ospf process.
-- Remove the ospf config and paste it back in.
Fix Information
This issue has been fixed.
