Analyze OSPF/ISIS topology offline. Save LSDB from router's output and upload it as TXT file, or use API to do it programmatically. Commands for supported vendors are here. LSDBs from multiple devices can be uploaded via API only example.
Choose one out of 1 saved graphs
backuped and non-backuped networks:
Set new edge cost in `New Cost` column
Nodes which have unsymmetric traffic paths
Compare state of your network