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Author Topic: Can't communicate with Motorola SB6121  (Read 26567 times)

WiredCaveMan

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Re: Can't communicate with Motorola SB6121
« Reply #15 on: November 30, 2011, 03:54:53 PM »

Update on my issue...

After posting, I grabbed hold of the network guy from work and we plugged the router into a Cisco switch. When the DIR-655 was set to auto-negotiate the WAN speed, it connected at 1 GB on the first try. When we set the speed to 1 GB manually through the DIR-655 advanced settings, the DIR-655 stopped communicating through the WAN connection completely. When I set it to connect at 100 MB manually, it connected at 100 MB. I set it back to auto and it failed to communicate once again. I rebooted on every change. We telnetted into the switch to see what was going on and to make sure that the switches port wasn't shutting down and it wasn't.

After work, I went to the store, bought a new DIR-655 (B1), upgraded the firmware, went through the setup, rebooted the modem, then the router. Everything worked just fine.

Bottom line with mine is that the WAN port went bad. I have no idea how long it was bad for. I think that I just never noticed because I used it for a 100 mb DSL connection for so long. I just wish it was still under warranty. I bought it when the DIR-655 was still pretty new a couple of years ago at about 160 bucks including tax. This one was about 84 bucks with tax. I guess I got my moneys worth. I think it’s still pretty decent for a retail grade product or I wouldn't have purchased another one.

Thanks for the replies, guys.
« Last Edit: November 30, 2011, 03:57:01 PM by WiredCaveMan »
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FurryNutz

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Re: Can't communicate with Motorola SB6121 (RESOLVED)
« Reply #16 on: November 30, 2011, 05:08:05 PM »

Glad you found the problem. Ya, at any speed the 655 should work well. Guess you got a bad unit. Send it back or RMA if you have a chance.

Just FYI, try to test out of the box before upgrading FW. IT's always not recommended to upgrade FW. It should work well on any version of FW out of the box.

Enjoy
« Last Edit: September 19, 2012, 11:39:50 AM by FurryNutz »
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Cable: 1Gb/50Mb>NetGear CM1200>DIR-882>HP 24pt Gb Switch. COVR-1202/2202/3902,DIR-2660/80,3xDGL-4500s,DIR-LX1870,857,835,827,815,890L,880L,868L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L,960L and 8000LH.
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