BGW320 Assign Multiple Public Static IPs to Devices
We have a /29 static IP block from AT&T and would like to assign a public IP from our allotted subnet to 2 separate devices within our local network.
Both devices are connected via ethernet to the Ethernet/5G Ethernet ports on the router
Followed the guide described here for allocating a public address to each device: https://forums.att.com/conversations/att-internet-features/how-do-i-setup-an-att-internet-static-ip/5defee02bad5f2f606ea4054
Aattempted a few different configurations to get this to work to no avail.
We're able to assign public static IPs to both devices, but:
- unable to access anything outside of the local network
- unable to receive requests from the public network
Neither device can be pinged or tracerouted from the public network.
Traceroute attempts to either of the public static addresses stop at the address identified as the "Broadband IPv4 Address" on the router: 75.7.XX.X7
BGW320 - Primary Broadband Status
|Broadband Network Type
|Broadband IPv4 Address
|Gateway IPv4 Address
BGW320 - Home Network Status
|Device IPv4 Address
|DHCPv4 Start Address
|DHCPv4 End Address
|DHCP Primary Pool
|Cascaded Router Status
|IP Passthrough Status
|Off (private IP address)
BGW320 - Subnets & DHCP
Private LAN Subnet
|Device IPv4 Address
|DHCP Server Enable
|Public Subnet Mode
|Allow Inbound Traffic
|Public Gateway Address
|Public Subnet Mask
|Primary DHCP Pool
- The 2 devices that were allocated public static IPs are using addresses within the public block above (i.e.76.2XX.XXX.211 and 76.2XX.XXX.212).
- These IPs are specified with the expected mac address within the IP Allocation tab on the router.
- All firewall options are turned off/set to No.
I noticed that the public IP of the router isn't in the same subnet as the public subnet we were assigned. Is that normal/expected?
- router broadband gateway IP: 75.X.3X.1
- public subnet gateway IP: 76.2XX.XXX.214
75. vs 76.
Given where the traceroutes stop, it seems like the router doesn't know how to route properly between the router and the public subnet.