ModifyTransitGatewayOptions - Amazon Elastic Compute Cloud
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ModifyTransitGatewayOptions

The transit gateway options.

Contents

AddTransitGatewayCidrBlocks

Adds IPv4 or IPv6 CIDR blocks for the transit gateway. Must be a size /24 CIDR block or larger for IPv4, or a size /64 CIDR block or larger for IPv6.

Type: Array of strings

Required: No

AmazonSideAsn

A private Autonomous System Number (ASN) for the Amazon side of a BGP session. The range is 64512 to 65534 for 16-bit ASNs and 4200000000 to 4294967294 for 32-bit ASNs.

The modify ASN operation is not allowed on a transit gateway with active BGP sessions. You must first delete all transit gateway attachments that have BGP configured prior to modifying the ASN on the transit gateway.

Type: Long

Required: No

AssociationDefaultRouteTableId

The ID of the default association route table.

Type: String

Required: No

AutoAcceptSharedAttachments

Enable or disable automatic acceptance of attachment requests.

Type: String

Valid Values: enable | disable

Required: No

DefaultRouteTableAssociation

Enable or disable automatic association with the default association route table.

Type: String

Valid Values: enable | disable

Required: No

DefaultRouteTablePropagation

Enable or disable automatic propagation of routes to the default propagation route table.

Type: String

Valid Values: enable | disable

Required: No

DnsSupport

Enable or disable DNS support.

Type: String

Valid Values: enable | disable

Required: No

PropagationDefaultRouteTableId

The ID of the default propagation route table.

Type: String

Required: No

RemoveTransitGatewayCidrBlocks

Removes CIDR blocks for the transit gateway.

Type: Array of strings

Required: No

SecurityGroupReferencingSupport
Note

This parameter is in preview and may not be available for your account.

Enables you to reference a security group across VPCs attached to a transit gateway. Use this option to simplify security group management and control of instance-to-instance traffic across VPCs that are connected by transit gateway. You can also use this option to migrate from VPC peering (which was the only option that supported security group referencing) to transit gateways (which now also support security group referencing). This option is disabled by default and there are no additional costs to use this feature.

Type: String

Valid Values: enable | disable

Required: No

VpnEcmpSupport

Enable or disable Equal Cost Multipath Protocol support.

Type: String

Valid Values: enable | disable

Required: No

See Also

For more information about using this API in one of the language-specific Amazon SDKs, see the following: