Hi experts; I am newbie in networking and need some help please
I created 3 VLANs on my Cisco Switch, and configured appropriate Ports (3 untagged and 1x trunk port to the FTG)
I configured 3 VLANs from the "Internal" physical interface (10.20.100.1/24), where the Switch is connected to.
VLAN 10 (Management), Subnet 10.20.10.1/24
VLAN 20 (WLAN), Subnet 10.20.20.1/24
VLAN 30 (Data), Subnet 10.20.30.1/24
I created Firewall policies to allow the VLANs to communicate between each other. It's working fine.
My Problem:
While I am in VLAN 10 (NIC configured with two IP Addresse: 10.20.10.15/24 and 10.20.100.15/24):
1. If I untag VLAN 100 in trunk port, I can ping the IP of the physical port 10.20.100.1 (which is the firewall management IP address) but not the VLAN 10 IP Address
2. If I Tag VLAN 100 in trunk port I can no longer ping vlan 100.
My question:
How can I ping both physical interface IP and sub interface IP while I am in subinterface?
Thank you in advance for your assistance
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You need to have VLAN 100 subinterface with an IP, and a policy from VLAN 100 to the parent interface.
Or, changing the native vlan on the switch side port to VLAN 100 would do equivalent.
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