单选题 在电信IPRAN配置规范里,关于BFD配置描述错误的是 bfd pw bind pw interface Ethernet0/2/18.1 discriminator local 161 discriminator remote 161 min-tx-interval 50 min-rx-interval 50 commit # ospf 31 router-id 100.0.0.1 bfd all-interfaces enable bfd all-interfaces min-tx-interval 30 min-rx-interval 30 bfd all-interfaces frr-binding