Yep,
And whats neat with bgp or ospf there are a ton of knobs to turn if needed for specific filtering of specific routes. In a sense you could control or force a route to go one or the other with in your own network.


On 05/03/2016 11:37 AM, Mike Hammett wrote:
Correct, but it's a bit cleaner if they are.

The two different routers will be advertising default routes. Traffic will go to the nearest Provider Edge (PE) router. If the other PE router has the better route, having them connected via layer 2 better moves the traffic to the other PE.

Having iBGP running on all routers between the two PEs makes it even better, but at the cost of making sure all of the routers between are capable of it.




-----
Mike Hammett
Intelligent Computing Solutions <http://www.ics-il.com/>
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
Midwest Internet Exchange <http://www.midwest-ix.com/>
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<https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
------------------------------------------------------------------------
*From: *"Jesse DuPont" <[email protected]>
*To: *[email protected]
*Sent: *Tuesday, May 3, 2016 11:26:23 AM
*Subject: *Re: [AFMUG] BGP and OSPF

The two BGP routers do not need to be on the same L2 network for the iBGP connection.


*_Jesse DuPont_*

Network Architect
email: [email protected]
Celerity Networks LLC

Celerity Broadband LLC
Like us! facebook.com/celeritynetworksllc

Like us! facebook.com/celeritybroadband

On 5/3/16 10:25 AM, Mike Hammett wrote:

    A BGP speaker would be a router speaking BGP. In this case, most
    likely your routers at the edge of your network that connect to
    your providers.

    Are the routers that are between your two BGP routers capable of
    running BGP, resource wise?

    Can you do a VPLS tunnel between your two BGP routers? If not,
    what about a VLAN?



    -----
    Mike Hammett
    Intelligent Computing Solutions <http://www.ics-il.com/>
    
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
    Midwest Internet Exchange <http://www.midwest-ix.com/>
    
<https://www.facebook.com/mdwestix><https://www.linkedin.com/company/midwest-internet-exchange><https://twitter.com/mdwestix>
    The Brothers WISP <http://www.thebrotherswisp.com/>
    <https://www.facebook.com/thebrotherswisp>


    <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
    ------------------------------------------------------------------------
    *From: *"That One Guy /sarcasm" <[email protected]>
    *To: *[email protected]
    *Sent: *Tuesday, May 3, 2016 11:13:36 AM
    *Subject: *Re: [AFMUG] BGP and OSPF

    Mike, i said helmet, explain it to me like you would a 10 year
    old, then dumb it down to my level from there.

    I dont know what a bgp speaker is

    On Tue, May 3, 2016 at 11:10 AM, Mike Hammett <[email protected]>
    wrote:

        Your OSPF network will just use default routes to get to your
        BGP speakers.

        Your BGP speakers with full routes will choose the best path.
        Your BGP speakers should be connected together, via direct
        connection, layer 2 tunnel (VPLS) or via intermediary iBGP
        speakers. Those iBGP speakers in the middle of your network
        will route the correct way, based on BGP.



        -----
        Mike Hammett
        Intelligent Computing Solutions <http://www.ics-il.com/>
        
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
        Midwest Internet Exchange <http://www.midwest-ix.com/>
        
<https://www.facebook.com/mdwestix><https://www.linkedin.com/company/midwest-internet-exchange><https://twitter.com/mdwestix>
        The Brothers WISP <http://www.thebrotherswisp.com/>
        <https://www.facebook.com/thebrotherswisp>


        <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>
        ------------------------------------------------------------------------
        *From: *"That One Guy /sarcasm" <[email protected]>
        *To: *[email protected] <mailto:[email protected]>
        *Sent: *Tuesday, May 3, 2016 10:41:52 AM
        *Subject: *[AFMUG] BGP and OSPF

        We currently have a /22 with 2 /24 statically routed in each
        of our providers. We are moving to BGP.

        What Im still unclear on is how my OSPF network is going to
        decide on the best path for data to flow externally

        can somebody give me the helmet version of how this is
        accomplished

-- If you only see yourself as part of the team but you don't see
        your team as part of yourself you have already failed as part
        of the team.




-- If you only see yourself as part of the team but you don't see
    your team as part of yourself you have already failed as part of
    the team.




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