[SOLVED] AWS direct connection - multiple subnets from datacenter

AWS direct connection - multiple subnets from datacenter

I'm having trouble trying to figure out how to get the datacenter subnets to talk to aws via direct connect using BGP. Below is the setup.
Datacenter Router - Cisco ASR 1001-hx

Datacenter subnets
VLAN 10 - 10.100.0.0/24
VLAN 20 - 10.200.0.0/24
AWS subnets
10.0.0.0/16

For the AWS direct I'm using 10.90.0.0/29 subnet in VLAN 90 for the virtual interfaces.
AWS vif ip - 10.90.0.1
Datacenter cisco sub-interface - 10.90.0.2

I've added 10.90.0.1 as a bgp neighbor with ASN and all that works fine. I can ping the AWS resources from a linux box having 10.90.0.3 to 10.0.0.33.
But now the question is how do I get the other vlans to talk to the AWS resources? Say from VLAN 10 - 10.100.0.0/24 to ping 10.0.0.33 in aws?

Solution

You need to make sure you advertise your on-premise subnets (VLAN10/VLAN20) to AWS so the VPC route table gets the proper routes. Make sure also your route on-premise has the correct routes to redirect traffic coming from AWS VPC.