cisco路由器時間戳
思科是全球領先且頂尖的通訊廠商，出產(chǎn)的路由器功能也是很出色的，那么你知道cisco路由器時間戳嗎?下面是學習啦小編整理的一些關于cisco路由器時間戳的相關資料，供你參考。
什么是時間戳?
時間戳(timestamp)，通常是一個字符序列，唯一地標識某一刻的時間。數(shù)字時間戳技術(shù)是數(shù)字簽名技術(shù)一種變種的應用。
時間戳(time-stamp)是一個經(jīng)加密后形成的憑證文檔，它包括三個部分：
(1)需加時間戳的文件的摘要(digest);
(2)DTS收到文件的日期和時間;
(3)DTS的數(shù)字簽名。
一般來說，時間戳產(chǎn)生的過程為：用戶首先將需要加時間戳的文件用Hash編碼加密形成摘要，然后將該摘要發(fā)送到DTS，DTS在加入了收到文件摘要的日期和時間信息后再對該文件加密(數(shù)字簽名)，然后送回用戶。
書面簽署文件的時間是由簽署人自己寫上的，而數(shù)字時間戳則不然，它是由認證單位DTS來加的，以DTS收到文件的時間為依據(jù)。
cisco路由器時間戳：
默認情況下日志消息不包括日期和時間戳。
service timestamps {debug | log } uptime
service timestamps {debug | log } datetime [mesc] [localtime] [show-timezone] [year]
debug 參數(shù) 在調(diào)試輸出時包括時間戳
log 參數(shù) 在每種日志消息中添加一個時間戳
uptime 在消息中包括路由器開機以來的時間
0w2d: #SYS-5-CONFIG_I : Configured from console by console
0w2d 開機后0周2天
datetime 顯示準確的日期和時間 UTC 格式 標準格式 MM DD HH:MM:SS
datetime后面可以跟一些參數(shù)
mesc 消息中包括毫秒信息
localtime 顯示基于本地配置的時區(qū)時間
show-timezone 輸出包括時區(qū)名稱
year 輸出包括年份信息
Connected to Dynamips VM "default" (ID 0, type c7200) - Console port
使用Dynamips 測試
r1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
r1(config)#service timestamps ?
debug Timestamp debug messages
log Timestamp log messages
r1(config)#service timestamps log ?
datetime Timestamp with date and time
uptime Timestamp with system uptime
r1(config)#service timestamps log uptime 首先使用開機時間 uptime
r1(config)#do show ip int br
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.100.2 YES NVRAM up up 產(chǎn)生一條消息用
Serial1/0 unassigned YES NVRAM administratively down down
Serial1/1 unassigned YES NVRAM administratively down down
Serial1/2 unassigned YES NVRAM administratively down down
Serial1/3 unassigned YES NVRAM administratively down down
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 開機時間 。 2 3 層改變?yōu)閐own
r1(config-if)#exit
r1(config)#service timestamps log datetime ?
localtime Use local time zone for timestamps
msec Include milliseconds in timestamp
show-timezone Add time zone information to timestamp
year Include year in timestamp
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 層改變?yōu)閡p Sep 15 2007 08:18:13.923 UTC 7月 15日 8點 18分 13秒 923 毫秒 UTC時間
r1(config)#service timestamps debug ?
datetime Timestamp with date and time
uptime Timestamp with system uptime
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 Use local time zone for timestamps
msec Include milliseconds in timestamp
show-timezone Add time zone information to timestamp
year Include year in timestamp
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
日志消息前面有個* 。日志消息一般是從三種字符的一種開始：空格 星號 句號
空格 路由器的時鐘被手動設置，或者和NTP時間服務器同步
星號 路由器的時鐘沒有別設置，或者沒有和NTP服務器同步
句號 路由器的時鐘被設置為同步，但和NTP服務器失去了聯(lián)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 Modification
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 Description
clock set
Manually set the system clock.
ntp
Controls access to the system's Network Time Protocol (NTP) services.
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