We currently have a Netgear WiFi Router that connects to a Comcast Internet with a Static IP and then to our Netgear Switch. I have added a Mikrotik CRS as another switch and that is working fine. I have purchased a Mikrotik Routerboard 1100AHx2 which I would like to use to replace the Netgear as our main Internet router
Using the QuickSet, I setup the WAN side with the exact same static IP, Subnet, GW and DNS servers as the Netgear and gave it the same IP address on the LAN side. I checked to bridge all ports and checked NAT. I removed the Netgear and replaced it with the RB and I could access it via the MAC or IP using Winbox just fine. Using the tools, I could ping from the RB to anything on the LAN side and on the WAN port of the RB. However, it will not route anything over the Internet. DNS servers do not resolve and I cannot ping the DNS server
If I remove the RB and put back the Netgear, I'm able to ping the DNS servers, Google and etc.
For more detail, I will use the following fictitious IP scheme:
Internet Static IP: 1.1.1.1
Internet Subnet: 255.255.255.252
Internet GW IP: 50.251.69.122
DNS: 75.75.76.76 | 75.75.75.75
LAN Static IP: 192.168.1.1
Subnet: 255.255.255.0
GW: 192.168.1.1
DNS: 192.168.1.10 (File/Print/DHCP/DNS server)
To initially setup, I use QuickSet and set it up with:
Internet (Our Current LAN Network)
IP: 192.168.1.3
SN: 255.255.255.0
GW: 192.168.1.10
DNS: 192.168.1.10
LAN (A new network)
IP: 192.168.2.1
SN: 255.255.255.0
GW: 192.168.2.1
DNS:
Check DHCP (192.168.2.100-192.168.2.199)
Check Bridge All Ports
Check NAT
When I do this, I connect my laptop to one of the router ports and I get 192.168.2.100 and am able to ping all assets on the 192.168.2.x and 192.168.1.x networks. Also, I am able to browse the web and perform ping/traceroute to google.com. All is good.
I then turn off the Internet modem and current WiFi/Router. I change the Routerboard to:
Internet Static IP: 1.1.1.1
Internet Subnet: 255.255.255.252
Internet GW IP: 50.251.69.122
DNS: 75.75.76.76 | 75.75.75.75
LAN Static IP: 192.168.1.1
Subnet: 255.255.255.0
Uncheck DHCP
Leave NAT checked
Everything on the LAN side works great but I cannot do anything past the WAN port on my router, which is set to my static IP. I check my routes, and all is good EXCEPT the 0.0.0.0/0 route that is using the Comcast gateway of 50.251.69.122, which reports as unreachable. I even tried spoofing my MAC address to be the same as the Netgear but that did not work.
Anyone have any suggestions?