Are they really running BGP?

VirtualGuyVirtualGuy
in CCIE Routing & Switching Technical

Yestoday, my colo server was down for a few hours due to an issue at the provider's upstream network. My colo service provider claims they are running BGP and have multiple connections to other ISP, but I doubt it.

Is there a way to find out whether they are running BGP or simplely have a static route to a single ISP?

Thanks!

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  • Scott MorrisScott Morris
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">





    Get on to their router?  :)



    If they have multiple upstreams, they should be balancing.  You can do
    a traceroute to different addresses (like AT&T's route-view server,
    Sprint's and other common carriers) to see if there are multiple paths.



    You could go to different route-view servers (provider's BGP views) and
    "show ip bgp (route belonging to your ISP) and see what the path
    information happens to be.  That will tell you if they have an AS.  And
    by trying that from multiple places, that will tell you if there's ANY
    variety whatsoever.  :)








     



    Scott Morris, CCIEx4
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    VirtualGuy wrote:

    Yestoday, my colo server was down for a few hours due to an
    issue at the provider's upstream network. My colo service provider
    claims they are running BGP and have multiple connections to other ISP,
    but I doubt it.

    Is there a way to find out whether they are running BGP or
    simplely have a static route to a single ISP?

    Thanks!







    Internetwork Expert - The Industry Leader in CCIE Preparation

    http://www.internetworkexpert.com



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    http://www.ieoc.com/forums/ForumSubscriptions.aspx

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  • VirtualGuyVirtualGuy

    Unfortunately, they don't let me login to their router and take a look. :-)

    Oh yeah, that's a good idea, I will trace it from different locations and see if it goes through different ISPs.

    Thanks Scott!

     

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  • cmfarinhacmfarinha
    Hi,

     

    You can use this tool from RIPE to check the changes on the routing for an IP prefix during a time period.

    It's very simple to use, just follow the instructions on the web page.

     


     


    Carlos Miguel M. Farinha

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