Hi everyone, would love to get some feedback from the community on how to deploy this or if this would be possible. We have a customer that has a head office using a Cisco 4331 ISR today with multiple sites connecting to it over IPSec VPN that they must keep in place. Their WAN is fibre with a /29. Their network is configured as follows:
Data 192.168.37.0/24, GW .1
Voice 172.19.37.0/24, GW .1
DHCP/DNS on server 192.168.37.10
Guest wireless (internet access only) 172.18.4.0/24, GW .1
They have a remote site that is getting fibre internet but we need to use a HD4 with 4 SIMs while the fibre is built out and will then switch it to a Balance 580 as well. We were going to bond the 4 SIM cards using the Balance 580 as the primary site where traffic goes to the Internet. They also have a requirement to do a point to point connection from the remote site back to the head office which I mentioned Peplink could do. They were going to do Layer 2 from the ISP but wanted to see if we can just use the Peplink since we already will have the SpeedFusion tunnel in place.
If I was to deploy a Balance device at their head office in drop in mode, is it possible to do a point to point from the remote site with the HD4, so that this remote site can access all those subnets on the Cisco? I hate integrating with an existing firewall like this but keeping the Cisco is mandatory so would love any feedback on if this is even possible or what extra steps might be required or if this would be overly complicated to do.