Facing firewall ASA communication issue

[haintnsl]

Dear all,

My name is HaiNT. Now, I am facing an issue related to firewall ASA communication as the attached picture. In that picture, it has two scenarios. I have to implement the network following scenario 1. I don't know to resolve the issue. Your support may help me out. I highly appreciate it!

Thank you all very much!

Brs,

HaiNT

[balaji.bandi]

if you are connecting back to back with router and configure router side as trunk, you need to provide sample config and what is the issue you having  to recommend best.

[haintnsl]

Hi Bandi,

Thank you very much for your help!

My problem is:

I am trying to connect directly ASA5506X (subinterface (vlan314) - OUTSIDE interface) with Cisco C881 (Fa0- access to vlan314), but they couldn't communicate with each other. In case of scenario 2 as the attached picture in previous post, they could. In fact, I must implement the system following scenario 1. I don't know why they couldn't communicate. What should I do to follow scenario 1?

I attached the configuration for the reference. I highly appreciate any suggestion!

Thank you so much!

BRs,

HaiNT