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      學習啦>學習電腦>網(wǎng)絡(luò)知識>路由器>路由器設(shè)置>cisco思科>

      cisco路由器時間戳

      時間: 權(quán)威724 分享

        思科是全球領(lǐng)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(guān)于cisco路由器時間戳的相關(guān)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(yīng)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(shè)置,或者和NTP時間服務(wù)器同步

        星號 路由器的時鐘沒有別設(shè)置,或者沒有和NTP服務(wù)器同步

        句號 路由器的時鐘被設(shè)置為同步,但和NTP服務(wù)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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