[FlipZZ]

I have a linksys cable/dsl router , spa2100 and a cable modem. If I put the spa2100 BEHIND my router, it works fine. If i replace the router with the spa2100 and go CABLE MODEM >>> SPA2100 >>> PC I do not even get a link light on the cable modem that it sees the spa2100. I have verified the cable is good. Could there be an issue with Tbased 10/11 or duplexing issues I am un aware of?

Any help, thanks for in advance
Mark

[ctylor]

Sounds like a MAC address issue. Try cloning the MAC address of your router in your SPA-2100 and it should work fine. "Enable MAC Clone Service" (in Router --> WAN Setup) set it to Yes and enter in the MAC addy your working router is using if you can find it.

[FlipZZ]

I have cloned the MAC address in there and no work. I checked with the cable provider and they are not even seeing the mac address trying to connect and there is no link light from my cable modem to the WAN port on the ATA even though if i take the cable our of the cable modem and put in router it works fine. Only idea I have had so far is that the 2100 is only 10 meg hald duplex and the cable moem is either 100 meg or full duplex. anyone run into this?

[ctylor]

Hmm so you are suggesting that b/c the SPA-2100 is a 10 Mbit port (half or full duplex, be what it may), it may not even be compatible with your cable modem because the modem is not a 10/100 Mbit auto-negotiate compatible device. Yeah, maybe? I guess the way to test that hypothesis is to get a 10/100 switch and put it between the cable modem and the SPA-2100. Such a waste of a good switch, which normally is what ought to be plugged into the LAN port of the Sipura 2100 and not the WAN port.

[FlipZZ]

That is an idea I had. I can not explain it why it would do this otherwise. I was planning on getting a little switch and trying it out tonight when I got home. I looked up specs on my cable modem (http://www.ambitbroadband.com/broadband/U10C018.php) and it lists it as a 10/100 FD ethernet port.

I am open for any suggestions though.