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Co-authored-by: Kian <[email protected]> Co-authored-by: Patricia Santa Ana <[email protected]>
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src/content/docs/magic-transit/how-to/advertise-prefixes.mdx

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@@ -90,7 +90,7 @@ When you withdraw a prefix using BGP, you must ensure the prefix is withdrawn ac
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### BGP peering
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If you use Direct CNI as a way to on-ramp your network traffic to Magic Transit, refer to [BGP peering](/magic-transit/how-to/bgp-peering) to learn how to configure BGP peering.
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If you use Direct CNI as a way to on-ramp your network traffic to Magic Transit, refer to [BGP peering](/magic-transit/how-to/bgp-peering/) to learn how to configure BGP peering.
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### Regional settings

src/content/partials/network-interconnect/bgp-peering.mdx

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{props.productName} customers can use the Cloudflare dashboard to configure and manage BGP peering between their networks and their Magic routing table when using a Direct CNI on-ramp.
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Using BGP peering with a CNI allows customers to:
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- Automate the process of adding or removing networks and subnets
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- Take advantage of failure detection and session recovery features
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- Automate the process of adding or removing networks and subnets.
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- Take advantage of failure detection and session recovery features.
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With this functionality, customers can:
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- Establish an eBGP session between their devices and the {props.productName} service when connected via CNI
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BGP support currently has the following limitations:
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- The Cloudflare account ASN and the customer device ASN must be different. Only eBGP is supported.
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- Routes are always injected with a priority of 100
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- Bidirectional Forwarding Detection (BFD) is not supported
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- 4-byte ASNs are not supported
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- Routes are always injected with a priority of 100.
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- Bidirectional Forwarding Detection (BFD) is not supported.
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- 4-byte ASNs are not supported.
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## Tunnel health checks
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By default each BGP peering session will use the same Cloudflare side ASN to represent peering with the Magic WAN/Transit routing table. This default ASN is called the **CF Account ASN** and should be configured to a private 2-byte ASN (64512 and 65534). To set this ASN:
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1. Log in to the Cloudflare dashboard, and select your account.
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2. Go to Magic WAN / Transit > Configuration > BGP.
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1. Log in to the [Cloudflare dashboard](https://dash.cloudflare.com/), and select your account.
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2. Go to **Magic WAN / Transit** > **Configuration** > **BGP**.
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3. In CF Account ASN, enter Cloudflare's ASN.
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### For Magic WAN customers
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- The Cloudflare side ASN will be included in the `AS PATH` of announced routes to any BGP enabled interconnect.
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- The customer device ASN can be chosen by the customer, and should be different to the Cloudflare side ASN.
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### For Magic Transit customers
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- The Cloudflare side ASN will never be exposed in `AS PATH` of anycast announcements from the Cloudflare edge. In those announcements, Cloudflare will always use the Cloudflare ASN of `13335` optionally prepended with a bring-your-own ASN as described in [Cloudflare ASN vs. your own ASN](/magic-transit/how-to/advertise-prefixes/#cloudflare-asn-vs-your-own-asn)
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- The customer device ASN can be a private ASN, or the ASN they are using for Magic Transit anycast announcements at the edge: this has no impact on the ASN for the anycast announced prefix at the edge of the Cloudflare global network.
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