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Thread: TTL Exceeded

  1. #1
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    romi poetra minang's Avatar
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    TTL Exceeded

    salam bt semua,..

    ane mo tanya ini gan, permasalahan dibawah ;

    ini salah satu IP Modem di kantor, pada saat ane ping dalam rentang waktu yg tak beraturan muncul spt dibawah ini;

    15.20.48.125 56 64 157ms redirect host
    15.20.48.125 56 64 163ms redirect host
    15.20.48.125 56 64 168ms redirect host
    15.20.48.125 56 64 169ms redirect host
    15.20.48.125 56 64 169ms redirect host
    15.20.48.125 56 64 176ms redirect host
    15.20.48.125 56 64 177ms TTL exceeded
    13.17.23.10 timeout
    13.17.23.10 timeout
    13.17.23.10 timeout
    13.17.23.253 84 64 5ms host unreachable
    13.17.23.10 timeout
    13.17.23.10 timeout
    13.17.23.253 84 64 13ms host unreachable
    13.17.23.10 timeout
    13.17.23.10 timeout
    13.17.23.253 84 64 4ms host unreachable
    13.17.23.10 timeout
    13.17.23.10 timeout
    13.17.23.10 timeout
    13.17.23.10 56 64 5ms
    13.17.23.10 56 64 2ms
    13.17.23.10 56 64 0ms
    13.17.23.10 56 64 0ms
    13.17.23.10 56 64 0ms
    13.17.23.10 56 64 0ms
    dan pada saat proses diatas terjadi (sebelum kembali normal) pemakaian CPU Pada mikrotik meningkat drastis , yang awalnya cuma (paling gede 4%) menjadi 70++%..

    permasalahan ini muncul tiba2, padahal tidak ada settingan tambahan atau apapun yang di lakuin. mudah2an ada yang bisa jawab kebingungan ane Click here to enlarge Thanks sebelumnya agan2

  2. #2
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    adhielesmana's Avatar
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    ttl exceed itu artinya terjadi routing loop,

  3. The Following User Says Thank You to adhielesmana For This Useful Post:

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    romi poetra minang's Avatar
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    klo dilogika kan secara sederhana,
    apa sama dg keluar dari switch masuk lagi ke switch yg sama, Click here to enlarge
    apa gitu ya gan..?? maaf klo salah... Click here to enlarge

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    Anto.PJ's Avatar
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    Click here to enlarge Originally Posted by romi poetra minang Click here to enlarge
    klo dilogika kan secara sederhana,
    apa sama dg keluar dari switch masuk lagi ke switch yg sama, Click here to enlarge
    apa gitu ya gan..?? maaf klo salah... Click here to enlarge
    itu switching loop.. yang jadi flood, ga ada TTL..yang ada lelet..

    tapi jelasnya.. TTL itu kaya gini:
    TTL standar ping adalah 255. setiap melewati 1 router (route table)/Hop, maka TTL menjadi 254, lewat 1 router lagi.. jadi 253.. akhirnya jadi 1.. dan exceed..

    menurut yang saya baca, routing loop umumnya terjadi di BGP router (pihak ISP) atau di core router(jika punya) anda akibat kesalahan routing
    anda bisa mengecheknya via traceroute

  6. #5
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    Thanks Gan.... sory telat comfirmnya.. udah clear Click here to enlargeClick here to enlarge

 

 

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