Chipset on these cards shows 8139D - this NIC is on the HCL as tested and supported. I have these guys installed as the second NIC in some Dell systems that already have an integrated 3C905 controller (also tested and supported). I am using the Realtek cards as the firewall's external interface, connected to SpeedStream 5360 ADSL modems; the 3Com controller is functioning as the internal interface. I have the Realtek cards configured as pppoe interfaces and have gone into the Advanced parameters to set the bandwidth to 1492. DSL connection is very unstable... the interface goes up and down for no apparent reason. I can reset modem and Astaro box and connect fine for a few minutes, then lose service and see the interface is down. The DSL light stays on solid, but the ethernet light blinks - slow on and off. I am having the exact same problem at two different locations. Looks like a problem with the ethernet connection, but I haven't had a chance to try a different card in the two boxes that are configured with the Realtek cards. I have a third location that is configured with a second 3COM card that's been rock solid. Same modem, same DSL provider, same integrated NIC. Ethernet light stays on steady at that location. Has anyone else had any experience using these cards or seen this type of behavior with any other supported NICs? I need to get these sites up and working ASAP.
Thank you in advance for any advice...
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