I found my router's forwading table is stuck.
It is stopped to install any routes into forwarding table, includes static/bpg routes.
We also tried to set new default route or any static routes, but it's still failed.
Is there any way to reinstall it or restart any proccess for recovery ?
you can restart routing-daemon (rpd) , but if it was not memory leak , this will not help and after instaling, all routes will fill FIB on your line cards again.
It's working after reinstall routes into forwarding table.