Configure BGP for Oracle Cloud Connections

Before you begin, ensure you have completed the steps outlined in Add Oracle FastConnect to a Cloud Router.

Add BGP information to the Cloud Router connection

Click the Cloud Router to expand its connections, and then click Configure BGP.

Screenshot of the Configure button in the PacketFabric portal

Complete the following fields and then click Submit.

BGP Settings

The ASN and IP addresses are completed on your behalf and should not be modified.

  • Header row

    • Field
    • Description
  • Row 1

    • BGP Authentication Key (optional)
    • If you selected Use a BGP MD5 authentication key when creating the Oracle FastConnect, enter the key here.
  • Row 1

    • Allow longer prefixes

    • This applies to the allowed incoming and outgoing prefixes that you list below.

      For example, say you list 172.16.2.0/24 as an allowed incoming prefix. You have three other cloud connections with the following outgoing prefixes:

      Connection A: 172.16.2.0/24
      Connection B: 172.16.0.0/16
      Connection C: 172.16.2.128/25

      If you do not select this option, only routes from Connection A are allowed.

      If you select this option, the routes from Connection A and Connection C are allowed.

NAT settings

This option appears if you selected a NAT-capable on-ramp.

Prefixes to NAT
The prefixes from the cloud that you want to associate with the NAT pool.
NAT Pool Prefixes
All prefixes that are NATed on this connection will be translated to the pool prefix address.
If this connection uses a public IP address, then this field is autofilled with the PacketFabric router prefix with /32.
If this connection uses a private IP address, then manually enter a /32 prefix that is different than the router peer IPs you entered above.
Allowed prefixes to cloud

This is a list of addresses that you want to allow into your Oracle Cloud VCN. These can be addresses from other cloud environments or from a different Oracle Cloud VCN.

If you are using NAT, this is pre-populated with the PacketFabric router peer IP.

  • Row
    • Field
    • Description
  • Row
    • ASN prepend

    • Number of additional times to add the ASN to the BGP path, resulting in a higher path length.

      Routes with higher path length (a higher ASN prepend value) have a lower priority.

  • Row
    • MED

    • The multi-exit discriminator (MED) value.

      When the same route is advertised in multiple locations, those with a lower MED are preferred by the peer AS.

  • Row
    • Prefix/Mask
    • Enter an allowed IP address range in CIDR format. You can add up to 1000 prefixes.
Allowed prefixes from cloud

This is a list of addresses from within the Oracle Cloud environment that you want to advertise to other clouds. This can include the VCN internal space and any routes you have created.

  • Row
    • Field
    • Description
  • Row
    • Local preference
    • When the same route is received in multiple locations, those with a higher local preference value are preferred by the PacketFabric Cloud Router.
  • Row
    • Prefix/Mask
    • Enter an allowed IP address range in CIDR format. You can add up to 1000 prefixes.