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Ask the Expert- SD-WAN

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BGP PIC/External Feature

Dears

May you please check this question .. It is related to BGP PIC Best External featuer

https://supportforums.cisco.com/thread/2205154

Many Thanks

Sherif Ismail

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Cisco Employee

BGP PIC/External Feature

Replied in the post.

BGP PIC/External Feature

Let me add something that could help you

the PIC add the two primary/backup paths to the router with CEF for fast switchover

the problem is when PE1 advertise best route PE2 will not send its advertised route anymore as it will install PE1 as best route in this case PE3 and PE1 will not have the second route via PE2

the advertise-best external will let PE2 to keep advertise its route so PE1 and PE3 can use it with PIC functionality

hope this help

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