I have a number of RB-750G's deployed on a routed network with good success. I have run into one problem that eludes me....
I have a DLS Internet connection that uses a NetGear DSL modem. I have some traffic routed to that connection via an RB-750 that is simply NATing to one of my static IP's on the DSL circuit. This connection fails to pass traffic for periods of 2-45 minutes at random times. I have other devices connected to the DSL modem with no issue. One of them is a Cisco ASA that also NATs the devices behind it to a single public IP.
I have disconnected the RB-750 from the DSL modem and connected a laptop with the same IP etc as the RB-750 and it works fine.
I replaced the RB-750 with a new one and reconfigured from scratch. No change in symptoms.
I tried replacing the DSL modem (with a Motorola) and found that the RB-750 would not pass any traffic. I changed the Ethernet Port settings from auto to 10mbps full duplex and then I could pass traffic but not at all reliably.
I returned to the original hardware/config and things returned to the original behavior. I then changed the WAN IP to a static IP on the network behind my Cisco ASA and moved the WAN connection to the ASA.
It works perfectly...
In short: Placing the ASA between the DSL modem and the RB-750 resolved the dropped traffic issue.
Any thoughts on this? Changing the speed/duplex settings is the only thing that appears to have affected the issue. I was only able to change the settings on the RB-750 as niether of the DSL modems had this option. Could it be that the RB-750 and the DSL modems could not negotiate connection properly where the RB750-ASA-DSL combination can?????
What do you all think?