Hi All
Thanks fisrt for your patience and kindness to help me.
I ever turned up RSVP and disable it for a long time. So I think LDP should follow OSPF.
But I don't find out why OSPF will choose the higher metric of interface as backup path.
Maybe I miss some configuration and hope to correct it .
As attachment is information about "show OSPF .....".
Best regards,
Cloud
> show configuration protocols rsvp
##
## inactive: protocols rsvp
##
apply-groups GR-LSP;
inactive: interface xe-1/3/2.1;
interface rlt0.0;
interface gr-2/3/0.1;
interface gr-2/3/0.2;
interface gr-1/1/0.1;
interface gr-1/1/0.3;