You want to ensure that L1 IS-IS routers have only the most specific routes available from L2 IS-IS routers.
Which action accomplishes this task?
You want to ensure that L1 IS-IS routers have only the most specific routes available from L2 IS-IS routers.
Which action accomplishes this task?
To ensure that L1 IS-IS routers have only the most specific routes available from L2 IS-IS routers, configure the ignore-attached-bit parameter on all L1 routers. This prevents L1 routers from installing a default route to L2 areas and forces them to use only the specific routes provided by the L2 routers.
A. If the attached bit is ignored, no default route, which points to the other areas which has set the attached bit, is installed