Clock Rate Details

datchchadatchcha Member Posts: 265
in CCNA & CCENT
What governs the speed to set clock rate at? How do you know what speed to use? Todd Lammle always sets clock rate at 64000. Is 64000 the default?
Arrakis
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  • networker050184networker050184 Mod Posts: 11,962 Mod
    The clock rate is speed of your connection that is what governs it. 64000 is the speed of a T1 which is the default for a serial interface.
    An expert is a man who has made all the mistakes which can be made.
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  • datchchadatchcha Member Posts: 265
    networker050184 wrote:
    The clock rate is speed of your connection that is what governs it. 64000 is the speed of a T1 which is the default for a serial interface.

    is there a chart you memorized? Example- like the bandwidth chart of each media?
    Arrakis
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  • gabrielbtoledogabrielbtoledo Member Posts: 217
    I always used 56000. Even on labs at school.
    A+ Certified - Network+ - MCP (70-290)
    MCSA - CCNA - Security+ (soon)
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  • networker050184networker050184 Mod Posts: 11,962 Mod
    There is no chart I memorized. I have never used the clockrate command in a real network, only when connecting back to back in a lab situation.
    An expert is a man who has made all the mistakes which can be made.
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  • georgemcgeorgemc Member Posts: 429
    networker050184 wrote:
    The clock rate is speed of your connection that is what governs it. 64000 is the speed of a T1 which is the default for a serial interface.


    Negative. A T1 has a data rate of 1.536/1.544 Mbps. 64000 is t he speed of a DS0. In real life (outside of the lab) you router pulls clocking from the line and you wont set it. Don't confuse the "clock rate" with the "bandwidth", bandwidth is used as a metric for routing and defaults to 1544Kbps on a serial interface.

    George
    WGU BS: Business - Information Technology Management
    Start Date: 01 October 2012
    QFT1,PFIT in progress.
    TRANSFERRED/COMPLETED: AGC1,BBC1,LAE1,QBT1,LUT1,QLC1,QMC1,QLT1,IWC1,INC1,INT1,BVC1,CLC1,MGC1, CWV1 BNC1, LIT1,LWC1,QAT1,WFV1,EST1,EGC1,EGT1,IWT1,MKC1,MKT1,RWT1,FNT1,FNC1, BDC1,TPV1 REQUIRED:
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  • networker050184networker050184 Mod Posts: 11,962 Mod
    In a T1 you will pull the timing or "clock" from one of the ds0 which is 64kbs.
    An expert is a man who has made all the mistakes which can be made.
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  • larkspurlarkspur Member Posts: 235
    Negative. A T1 has a data rate of 1.536/1.544 Mbps. 64000 is t he speed of a DS0. In real life (outside of the lab) you router pulls clocking from the line and you wont set it. Don't confuse the "clock rate" with the "bandwidth", bandwidth is used as a metric for routing and defaults to 1544Kbps on a serial interface.

    George

    good catch!!!!
    just trying to keep it all in perspective!
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