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MPLS and BGP

Posted on 2014-03-31
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Last Modified: 2014-04-02
If I am not wrong BGP is configured at the ISP level only, unless if a company has 2 Active links to 2 separate ISPs then the company network administrator will have to configure BGP on the routers facing ISPs.

I am not sure about the other part regarding MPLS. Is the configuration totally belongs to the ISPs , and there is no case where the company Network Administrators are called to configure MPLS ?

Any help will be very much appreciated

Thank you
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Question by:jskfan
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by:naderz
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You are correct. You don't really need BGP if you have only one link to the Internet. In that case routing can be taken care of via a default route to ISP and ISP pointing your IP subnet via static to your router.

With MPLS your router will be considered the CE (customer edge) connecting via ethernet to the provider's router called PE (provider edge) router. As such you will just need to configure routing between your router and PE. If you are using vrfs to create multiple VLANs to separate traffic then the CE config will change and will need to proper configuration.
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by:jskfan
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Are you saying we need to configure MPLS at the Customer Edge Router ? if so , can you paste an example using commands ?

Thank you
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naderz earned 500 total points
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Sorry I was not clear. No, you don't need any special configuration on the CE side. Unless, you intend to use multiple VLANs. If you are just using MPLS to connect to your (or, other entity's) router, you just need to configure how you route and the basic Interface configs.
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by:jskfan
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