In Huawei devices, when ISIS imports external routes and sets external route tags for routing information, ISIS's metric types do not need to be modified, keep the default.

Command ip ip-prefix ip-prefix-name [index index-number] { permit | deny} ipv4-address mask-length [greater-equal greater-equal-value ] less-equal less-equal-value]Hf-IP- Prefix-filter.
If the less-equal of a prefix list has been specified, but the greater-equal is not specified, what is the range of the prefix?

When judging the old and new LSA, the serial number parameter and the age parameter will be used. Which of the following statements about the two parameters is correct?

When there are multiple matching rules in the ACL of the VRP, which of the following statements is correct about the matching order?

Which of the following tools cannot be directly referenced by the If-match clause in the Route-policy?