Help to set up Cisco 887V for VSDL routed subnets

[Davit2005]

Hi All,

I'm having some difficulty setting up a Cisco 887V VSDL router at home.

 

At the moment at home I have a static allocation of 5 IPv4 addresses and an allocated /56 of IPv6 addresses from my ISP

 

Currently using a DrayTek which I cannot fault but it is a bit fiddly to get setup and is a bit lacking for other stuff I want to try and do.

 

My separate firewalls do the NAT for IPv4. For IPv6 I have a separate /64 network used for IPv6 between the Firewall and the DrayTek.

 

Currently with IPv4 I use one of the public IP addresses on the LAN side and one on the WAN side. The IP address on the LAN side is used as the default gateway for the firewall

 

I want to carry on using the firewall for NAT as there are 2 in a HA pair and also use them to separate WiFi, IoT, DMZ and server traffic from the rest of the network. Each firewall also has a connection to a 4G router as a backup for essential traffic (VOIP, CCTV notifications, etc.)

 

I'd like to use as few IPv4 public IP addresses as possible, the way the specific firewall works is that the network interfaces apart form HA interfaces are shutdown unless the firewall is currently active.