Create Transit Gateway with Peering between Regions | Scribe

    Create Transit Gateway with Peering between Regions

    • Durgaprasad A |
    • 135 steps |
    • 6 minutes

    Creating Transit Gateways

    1

    I created 2 VPC's in the same region ( each vpc has - 2 public , 2 private subnets , 1 public and 1 private route table ) \ After that click on transit gateway

    2

    Creating 1st Transit Gateway

    3

    Enter Transit Gateway name and Description

    4

    UnCheck Default Route table association and Default route table propagationThis gives more control on routing

    UnCheck Default Route table association and Default route table propagationThis gives more control on routing
    5

    A CIDR for the transit gateway must be provided . This must be unique to VPC CIDR of all the transit gateway attachment VPC's

    6

    Since in this case VPC CIDR start with 10 and 172 . I choose CIDR with 192

    7

    Click "Create transit gateway"

    8

    Click "Create transit gateway" to create 2nd Transit Gateway

    9

    Enter Transit Gateway name and Description

    10

    Disable route table association and propagation

    11

    Provide the CIDR for new transit gateway . Keep this unique to that of other transit gateway

    12

    Click "Create transit gateway"

    Creating Transit Gateway Attachments

    13

    Create Transit Gateway Attachments with each of the VPC's . Project1 VPC is attached to Transit Gateway 1

    14

    Click "Create transit gateway attachment"

    15

    Click "tgw-0c6c9842be062ee49 (transit-gateway-region1)" ( choose the transit Gateway and type of attachment since we are attaching to VPC it's of type VPC

    16

    Select the VPC . for transit gateway 1 the vpc is project1-vpc . When selected we are prompted to selected subnets . Select atleast one subnet from each AZ . This enables transit gateway to reach the resources in that AZ

    17

    Click "Create transit gateway attachment"

    18

    Create Transit Gateway Attachments with each of the VPC's . Project2 VPC is attached to Transit Gateway 2