[简答题]In an ACL cause， what’s the function of log or log-input keyword at the end？

参考答案: Enable logging information of packets which match the ACL entriy with log or log-input keyword.
Log
Log is an optional specification that turns on informational logging. The logging information the router generate includes the access list number or name， source and destination address， protocol， upper layer port number， and number of packets logged.
Log-input
Log-input adds the input interface and source MAC address or virtual circuit number to the log output.