I have a Cisco 9221 sec/k9 that I am bringing fiber into via the sfp port from my ISP.
I also have redundant ASA 5515-X firewalls in active/standby mode that I'd like to feed from the 2921.
What would the interface configurations look like in this instance given the 2921 has three ports (unless you add expansion cards) and I will be receiving the fiber on Interface GigabitEthernet 0/1 and I will have to send a feed to each ASA 5515-X on the remaining two ports.
I've normally always ran the ISP into my firewalls in the past and I'm not sure how to configure the 2921 to interface with the firewall and still have it accessible from my LAN when there are no additional ports to connect to my Catalyst switches.
If I need to throw configs up I'm more than happy to but in this case I just need some help wrapping my mind around the interface configuration.
Thanks in advance.