I have a rather basic question about portchannel and dual ISPs. I have a Active/Passive ISPs where ISP2 is only active when ISP1 fails.
On ASA side, I have 2 subinterfaces with different IP address and vlan (999 for ISP1 and 998 for ISP2) assigned to each subinterfaces.
On switch side, I have access vlan 999 towards ISP 1 modem and access vlan 998 towards ISP2 modem. For portchannel towards firewall, I have a portchannel setup as trunk and allow vlan 999 and 998. But I'm unable to ping the ISP1 from firewall. I don't even see the ISP1 ip address in firewall ARP table.
On a side note, I also have a native vlan set as 999 (ISP vlan) towards some other switch from inherited config, which I want to clean up later. I wonder if that has anything to do with this issue.
Is it my portchannel configuration or native vlan configuration that's messing up with connection?
