When you're completing an order to link your Cloud Connector to AWS, we'll ask you to provide a Border Gateway Protocol (BGP) Autonomous System Number (ASN). We’ll configure the BGP peering between Telstra and AWS using the ASN you supply. After the BGP configuration is applied, your AWS VPC will peer with your Next IP VPN through Cloud Connector and you can send traffic between them.
The ASN you choose must be within a range recommended by the network. Peering type will determine the allowed values.
For private peering connections
Choose an ASN between 64512 to 65534 (excluding 65530 and 65422). If you don’t nominate an ASN the default value 64512 will be used for the connection. By default when a Direct Connect Gateway is created in AWS, 64512 is the default value for the Amazon side ASN.
If you need to change the Amazon side ASN for a connection this can be done by Editing the connection after its been provisioned. Changing the ASN value of an active connection will require an outage as the AWS virtual interfaces will need to be deleted and recreated.
For public peering connections
The Amazon Side ASN is 7224 and this is not configurable.
Picking your Amazon-side ASN (for private peering)
In larger networks, choosing a suitable BGP ASN may be a manual exercise if you haven't maintained records of key information about your IP network. Reusing the same ASN within a private network is not supported as it will cause connectivity issues between sites that are using the same ASN. Every site/service connected to your NextIP network via BGP needs a unique ASN.
If your organisation doesn’t use BGP anywhere on the internal network, you may have little or no risk of a clash. Otherwise, either or both of these methods could help you identify an appropriate ASN:
- If your organisation maintains a register of internal BGP ASN allocations, you can reserve a suitable value in it
- Analyse the IP routing tables in one or more key routers in your network to see if your choice is already used
- Remember to pick ASNs between 64512 to 65534 (excluding 65530 and 65422).
Ideally, a network designer or engineer will help you identify a suitable BGP ASN. If you don't have one, contact your Telstra account team or authorised partner to request professional help.
Separate charges may apply for professional services.