Is PPPoE used in ADSL?

johnifanx98johnifanx98 Member Posts: 329
in CCNA & CCENT
I've trying to gain certain real world knowledge through this case study. I use ADSL from ATT. I configure the modem as bridged mode. Then I connect my own wireless router to this modem using ethernet cable.

Actually this ADSL modem (TP-link) has its own router integrated. So, I guess

#1 between my own router and the TP-Link's router, it's just two networks connected with an ethernet cable. No WAN.

#2 internal to the model, a certain WAN protocol is used between the internal router and the modem component. Am I right? If so, what is it? I thought it would be PPoE. But then what is the bridged mode?
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  • TehToGTehToG Member Posts: 194
    Typically ADSL uses PPPoA (PPP over ATM) and cable/fibre connections use PPPoE (PPP over Ethernet)
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  • RoguetadhgRoguetadhg Member Posts: 2,489 ■■■■■■■■□□
    Im trying to remember, I believe I seen "PPPoE" when I was living in Pennsylvania. Back in the days of W2K/XP. I had DSL back then. Never had cable until recently.
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  • johnifanx98johnifanx98 Member Posts: 329
    Roguetadhg wrote: »
    Im trying to remember, I believe I seen "PPPoE" when I was living in Pennsylvania. Back in the days of W2K/XP. I had DSL back then. Never had cable until recently.

    Actually I tried to figure out which interface PPP or whatever WAN protocol is applied to. I understood there is an internal router within the modem. Then is the PPP protocol implemented on the serial interface of this internal router?

    And if the above is true, then what is the other end of this PPP protocol?
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  • RoguetadhgRoguetadhg Member Posts: 2,489 ■■■■■■■■□□
    My time during those days weren't concerned with the connections, or how things really went. All I cared during those days was my Rollercoaster Tycoon park, SimCity, RedFaction, Tribes and Unreal Tournament. :P

    I just knew I had faster than 56K and didn't need to keep using Aol discs. >.>
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  • MickQMickQ Member Posts: 628 ■■■■□□□□□□
    You can have either PPPoA or PPPoE depending on your service provider. Here in Ireland it used to be mainly PPPoA, but now it's PPPoE.
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  • sratakhinsratakhin Member Posts: 818
    I had ADSL in Russia and it used PPPoE. I guess it all depends on where the provider is.
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  • Nate--IRL--Nate--IRL-- Member Posts: 103 ■■□□□□□□□□
    MickQ wrote: »
    You can have either PPPoA or PPPoE depending on your service provider. Here in Ireland it used to be mainly PPPoA, but now it's PPPoE.

    Eircom ADSL was always PPPoE AFAIK.

    Nate
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  • mapletunemapletune Member Posts: 316
    my home wireless router uses PPPoE, since the router WAN interface is connected to the ADSL csu/dsu, thus, PPPoE.
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  • MosGuyMosGuy Member Posts: 195
    As others have mention; the type varies by location. In north america with ADSL PPPoE is most common. When I lived in England and northern Ireland PPPoA was more popular. Which threw me at first, I was so used to selecting PPPoE without thinking icon_lol.gif
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