I have a Cisco 1811 router with 2 Ethernet Ports and 1-9 FastEhernet ports( 1-9 act like a switch). On the Ethernet port I have trunked to my ISP for my private network. And on the FastEthernet1 is the firewall , FastEthernet3 is the Cisco Concentrator and FastEthernet6 ISP internet connection is connect. There is default vlan 1 on the FastEthernet 1-9 . When I reboot the firewall the FastEthernet1 goes down as per normal but the LINE PROTOCOL where the Concentrator is connect goes down as well and does not come up until I log on to the concentrator and ping out from that port.
ISP ROUTER-----------(FE6)CISCO ROUTER 1811-------(E1)PRIVATE NETWORK (WAN) | (FE1) | (FE3)
Concentrator Firewall
The Firewall has a public IP address and the Concentrator has a public IP address but they are on different subnets. The ISP router has the firewall subnet as primary and the Concentrator as secondary.
Any clues?
Cheers
