具有代表性的配置：
　　
　　service timestamps debug datetime mesc localtime show-timezone
　　service timestamps log datetime mesc localtime show-timezone
　　!
　　no logging console
　　logging buffered 16384
　　logging trap debugging
　　logging facility local7
　　logging 192.168.0.1
　　logging 192.168.0.2
　　logging source-interface loopback 0