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Home Gateway Location

Discussion in 'Internet, Connectivity and Communications' started by arisen, Jan 16, 2006.

  1. arisen

    arisen Byte Poster

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    Hi Guys,

    Take a look at the diagram below taken from adslguide.org.uk :

    [​IMG]

    My question is, where is the home gateway actually located? Is it on the ISP premises? If so what do they mean by 'transit to ISP' ? Or is it at another BT exchange local to the ISP? :blink

    Any thoughts appreciated!
     
    Certifications: BEng, PRINCE2, ITIL, Net+
    WIP: MSc, Linux+ 2009, RHCE
  2. hbroomhall

    hbroomhall Petabyte Poster Gold Member

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    The HGs are at various BT sites on their network. These sites are not always co-sited with exchanges.

    Sometimes if you do a traceroute you will see names of the HGs in the path to the ISP.

    The diagram is only true for people connected via BT-wholesale of course. Those via LLU have a different diagram.

    Harry.
     
    Certifications: ECDL A+ Network+ i-Net+
    WIP: Server+
  3. arisen

    arisen Byte Poster

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    Thanks for your reply Harry, ok, cool, so if an ISP installs it's DSLAM equipment into a BT exchange via LLU, how does it then get the 'backhaul' done? ie how would the diagram differ for LLU with regards connection from the exchange back to the ISP?

    I'm thinking if they have their own network infrastructure near the exchange the BT ATM cloud wouldn't be in the diagram?? And if not the only difference in the diagram would be maybe in the HG stage?
     
    Certifications: BEng, PRINCE2, ITIL, Net+
    WIP: MSc, Linux+ 2009, RHCE
  4. hbroomhall

    hbroomhall Petabyte Poster Gold Member

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    Correct. I can only speak for the way 'we' do it, but our DSLAMs are connected to a LES which connects to our nearby fibre, and gets to us that way. No HGs involved!

    In some cases we have fibre into the exchanges - so we don't need the LES.

    Harry.
     
    Certifications: ECDL A+ Network+ i-Net+
    WIP: Server+
  5. arisen

    arisen Byte Poster

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    fantastic, thanks mate :thumbleft
     
    Certifications: BEng, PRINCE2, ITIL, Net+
    WIP: MSc, Linux+ 2009, RHCE
  6. Jakamoko
    Honorary Member

    Jakamoko On the move again ...

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    Harry - can you explain in BT's diagram where exactly the BT engineer's bacon roll gets stuck, therefore bringing down the end-user's connectivity until a BT engineer is called out ?
     
    Certifications: MCP, A+, Network+
    WIP: Clarity
  7. hbroomhall

    hbroomhall Petabyte Poster Gold Member

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    BT engineers get everywhere - thus so do their bacon rolls!

    As an aside - I share my office with 3 ex-BT engineers, and the first thing that greets me as I arrive is the smell of the 'telco toast'.

    Puts a smile on my face each morning!

    Harry.
     
    Certifications: ECDL A+ Network+ i-Net+
    WIP: Server+
  8. Jakamoko
    Honorary Member

    Jakamoko On the move again ...

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    I really ought not to hijack this thread any further, and shall return it to it's rightful owner after I ask you ......


    ...Can you ask them if brown sauce affects contention ratio ?

    :oops: :offtopic
     
    Certifications: MCP, A+, Network+
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  9. arisen

    arisen Byte Poster

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    Certifications: BEng, PRINCE2, ITIL, Net+
    WIP: MSc, Linux+ 2009, RHCE
  10. hbroomhall

    hbroomhall Petabyte Poster Gold Member

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    They are old-fashioned SystemX engineers - so may turn up their noses at the word 'contention'. :biggrin

    If you don't hear from me for a day or two you will have some idea what happened....

    Harry.
     
    Certifications: ECDL A+ Network+ i-Net+
    WIP: Server+

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