Run the display isis route [ process-id | vpn-instancevpn-instance-name ] [ ipv4 ] [ verbose | [ level-1 | level-2 ] | ip-address [ mask | mask-length ] ] * command to check information about the primary link and backup link after IS-IS Auto FRR is enabled.
Run the display isis spf-tree [ systemidsystemid | dnamedname ] [ [ level-1 | level-2 ] | ipv6 | verbose ] * [ process-id | vpn-instancevpn-instance-name ] command to check the traffic protection type of IS-IS Auto FRR.