默认情况下日志消息不包括日期和时间戳。
service timestamps {debug | log } uptime
service timestamps {debug | log } datetime [mesc] [localtime] [show-timezone] [year]
debug
log
uptime
0w2d: #SYS-5-CONFIG_I : Configured from console by console
0w2d
datetime 显示准确的日期和时间
datetime后面可以跟一些参数
mesc 消息中包括毫秒信息
localtime 显示基于本地配置的时区时间
show-timezone
year 输出包括年份信息
Connected to Dynamips VM "default" (ID 0, type c7200) - Console port
使用Dynamips 测试
r1#conf t
Enter configuration commands, one per line.
r1(config)#service timestamps ?
debug
log
<cr>
r1(config)#service timestamps log ?
datetime
uptime
<cr>
r1(config)#service timestamps log
uptime
r1(config)#do show ip int br
Interface
FastEthernet0/0
Serial1/0
Serial1/1
Serial1/2
Serial1/3
r1(config)#int fa 0/0
r1(config-if)#shut
r1(config-if)#
00:02:58: %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to administratively down
00:02:59: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
00:02:58
r1(config-if)#exit
r1(config)#service timestamps log datetime ?
localtime
msec
show-timezone
year
<cr>
r1(config)#service timestamps log datetime localtime msec show-timezone year
r1(config)#int fa 0/0
r1(config-if)#no shut
r1(config-if)#
*Sep 15 2007 08:18:13.923 UTC: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
*Sep 15 2007 08:18:14.923 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
2 3 层改变为up
r1(config)#service timestamps debug ?
datetime
uptime
<cr>
r1(config)#service timestamps debug uptime
r1(config)#do debug all
This may severely impact network performance. Continue? (yes/[no]): yes
All possible debugging has been turned on
r1#
00:07:09: IP routecache flags changed on Null0,
added No CEF; now No CEF
00:07:09: IP routecache flags changed on Null0,
added No CEF; now No CEF
00:07:10: CEF: background resolution thread state:
00:07:10: Thread fast_thread: Empty
00:07:10: Thread todothread: Empty
00:07:10: Thread slow_thread: Emp
r1#un all
r1#conf t
r1(config)#service timestamps debug datetime ?
localtime
msec
show-timezone
year
<cr
r1(config)#$estamps debug datetime localtime msec show-timezone year
r1(config)#do debgug
This may severely impact network performance. Continue? (yes/[no]): yes
All possible debugging has been turned on
r1#
*Sep 15 2007 08:22:27.335 UTC: IP routecache flags changed on Null0,
added No CEF; now No CEF
*Sep 15 2007 08:22:27.339 UTC: IP routecache flags changed on Null0,
added No CEF; now No CEF
*Sep 15 2007 08:22:27.359 UTC: CEF: background resolution thread state:
*Sep 15 2007 08:22:27.359 UTC: Thread fast_thread: Empty
*Sep 15 2007 08:22:27.359 UTC: Thread todothread: Empty
*Sep 15 2007 08:22:27.359 UTC: Thread slow_thread: Empty
*Sep 15 2007 08:22:27.923 UTC: Local MobileIP: aging arp mobility cache entries
*Sep 15 2007 08:22:27.927 UTC: IP-ST: if_list try 0
*Sep 15 2007 08:22:27.927 UTC: IP-ST: gw_list total 0, try 0, completed list TRUE
日志消息前面有个* 。日志消息一般是从三种字符的一种开始：空格 星号 句号
空格
星号
句号 路由器的时钟被设置为同步，但和NTP服务器失去了联系
service timestamps debug uptime和service timestamps log uptime?
service timestamps
To configure the system to timestamp debugging or logging messages, use one of the service timestamps global configuration commands. Use the no form of this command to disable this service.
service timestamps type [uptime]
service timestamps type datetime [msec] [localtime] [show-timezone]
no service timestamps type
Syntax Description
type
Type of message to timestamp: debug or log.
uptime
(Optional) Timestamp with time since the system was rebooted.
datetime
Timestamp with the date and time.
msec
(Optional) Include milliseconds in the date and timestamp.
localtime
(Optional) Timestamp relative to the local time zone.
show-timezone
(Optional) Include the time zone name in the timestamp.
Defaults
No timestamping.
If service timestamps is specified with no arguments or keywords, default is service timestamps debug uptime.
The default for service timestamps type datetime is to format the time in UTC, with no milliseconds and no time zone name.
The command no service timestamps by itself disables timestamps for both debug and log messages.
Command Modes
Global configuration
Command History
Release
10.0
This command was introduced.
Usage Guidelines
Timestamps can be added to either debugging or logging messages independently. The uptime form of the command adds timestamps in the format HHHH:MM:SS, indicating the time since the system was rebooted. The datetime form of the command adds timestamps in the format MMM DD HH:MM:SS, indicating the date and time according to the system clock. If the system clock has not been set, the date and time are preceded by an asterisk (*) to indicate that the date and time are probably not correct.
Examples
The following example enables timestamps on debugging messages, showing the time since reboot:
service timestamps debug uptime
The following example enables timestamps on logging messages, showing the current time and date relative to the local time zone, with the time zone name included:
service timestamps log datetime localtime show-timezone
Related Commands
Command
clock set
Manually set the system clock.
ntp
Controls access to the system's Network Time Protocol (NTP) services.
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