Obi 110 - Poisoning Network on a Regular basis
dots:
Starting a couple months ago, my Obi 110 will effectively kill my network. My internet connected devices will lose internet connectivity, my main switch port lights will go nuts, and the LED on the Obi will show red. If I unplug the Obi then plug it back in, it will reset, and my network will return to normal.
Any ideas of what would cause that, or any ideas on a fix?
RonR:
The OBi defaults to 10 mb/s half-duplex on the Ethernet port. That shouldn't be a problem, and it's a shot in the dark, but you might try changing the OBi to 100 mb/s full-duplex:
1. Dial *** 0
2. Enter option 27 and press #
3. Press 1 to set a new value
4. Enter a value of 1 and press #
5. Press 1 to confirm/save
6. Hang up
7. Wait for the OBi to reboot
dots:
Thanks for the fast response. I've made the change. If it doesn't happen again, I'll know it works! Thanks.
VulcanTourist:
Just curious, trying to draw a conclusion from what RonR said: if the default connection of 10base-T caused a problem, wouldn't that indicate a limitation or problem with the router/switch not being able to negotiate a different speed on each port? I'd expect that to be truly rare for any products of recent design.
DarkNova:
This is a very interesting post. I had the same problem a few months back when I bought a new router. It was a Buffalo N300 router, fairly high end newish $65 802.11n & gigabit router. Whenever I plugged the Obi110 in to it, all speed between ports & wireless dropped to around 10 Mbit. I thought the router was bad at first but quickly discovered that the Obi110 was making all its ports slow down. Buffalo blamed the Obi, I questioned this as one would think that a gigabit router would properly do port negotiation as not everything plugged in will be gigabit! But perhaps they just didn't test 10 Mbit half duplex. Anyway, I returned the router for one that switches ports properly and haven't had a problem. But I didn't realize that the Obi110 could change to 100 Mbit full duplex. Is there any disadvantage to doing 100 Mbit full duplex on it, or why isn't that the default?
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