I have a small network that is connected to the equipment managed by the landlord in our building.
I own and control an ASA which handles all of our routing and a 2960 switch. The landlord has a 4506 switch.
The landlord's switch connects to all of our cubicles for phone and data. The switch then has a default route pointing to their router. I have the 2960 plugged into the 4506. All the cubicles are able to get internet through our ASA.
I am confused as the 4506 does not have any trunk ports setup and the access ports are VLAN 14. I'm assuming it's taking that traffic, sending it to their router and then back down which somehow finds my ASA. How is this working?
My ASA does not have VLAN 14 configured at all. My native VLAN is 1. How are access ports of VLAN 14 able to communicate with my ASA?
My ASA inside interface is 10.89.101.2/24
The 4506 VLAN 14 interface does not have an ip address assigned
The 4506 has a default route 0.0.0.0 0.0.0.0 10.83.8.1
If the 4506 is sending everything to their router, how is it making it back to the ASA?
ASA -> 2960 -> 4506 -> 2800RTR
| |___ PC/PHONE (VLAN 14,16)