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Metro ethernet question

Discussion in 'Internet, Connectivity and Communications' started by kobem, Feb 4, 2011.

  1. kobem

    kobem Megabyte Poster

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    Hey people, this matter confuses my mind a little bit. Normally, while getting Internet connection from ISP or communicating two or more LANs, we take advantage of layer 3 devices at the customer end or layer 3 devices(DTE) on both ends going through WAN switches (DCE) (during LAN-to-LAN data transmission)

    But, on metro ethernet, additionally metro ethernet switches are placed on customer end.(looking to other
    metro switch on ISP side). Why?

    The reason is that routers do not support fibre interfaces? or what else?
     
    Certifications: CCNA
  2. greenbrucelee
    Highly Decorated Member Award

    greenbrucelee Zettabyte Poster

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    Does anything not confuse you?
     
    Certifications: A+, N+, MCDST, Security+, 70-270
    WIP: 70-620 or 70-680?
  3. kobem

    kobem Megabyte Poster

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    Think a little bit carefully. Doesn't router of customer side support fibre interfaces so communication is performed
    router to router? Is this the only reason for metro switches?
     
    Certifications: CCNA
  4. greenbrucelee
    Highly Decorated Member Award

    greenbrucelee Zettabyte Poster

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    Read this book
     

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    Certifications: A+, N+, MCDST, Security+, 70-270
    WIP: 70-620 or 70-680?
  5. kevicho

    kevicho Gigabyte Poster

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    Generally that sort of setup will use fibre (due to distance), so you would need a fibre module at both ends.
     
    Certifications: A+, Net+, MCSA Server 2003, 2008, Windows XP & 7 , ITIL V3 Foundation
    WIP: CCNA Renewal

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