I have a Linux router that handles the outbound connection for our corporate network. It's worked reliably for years with other network providers.
We recently had Comcast Business installed with 13 static IPs to take advantage of the speed offered. The installation used a CISCO DPC3939B cable modem. Wireless is turned off (we have our own wireless corporate network). Based on recommendations from Comcast support, I've also disabled DHCP and DNS in the modem so that it's in bridge mode.
We have a block of addresses (96.xx.xx.17 - 96.xx.xx.29) assigned to the interface. Gateway address is 96.xx.xx.30.
Configuring the adapter and routes using this information only results in RTNETLINK invalid parameter responses. It appears that the ports on the CISCO DPC3939B may be still looking for configurations with default 10.1.10.x network?
Is there someone who's successfully configured a LINUX-based router for Comcast Business with a block of static addresses can point me in the right direction? I can certainly provide more details on the set-up but that may be better done via direct message.
Thanks.