Surfboard SBG900 modem/router to linksys WRT54G connection issues.
1 replies, posted
I have been trying for two days to get my setup working and have been getting the run around for getting help from my ISP (Comcast) I have a motorola surfboard SBG900 router and cable modem combination. The wireless router in it slows down the internet, so I want to disable the wireless router part of it (Disabling NAT and turning off the wireless setting) and make it just a modem. Then using my linksys WRT54G to handle the wireless connections.
So far what I have is the two connected by an Ethernet cable, I see the wireless network wonderfully, but no internet is being put through. I had the setup working the night before and the next morning, but when I got back home four hours later no more internet. Even after power cycling the modem, router, computer, in order.
I configured the modem by turning off the NAT and wireless settings, leaving it in auto DHCP mode. Configured my router in auto DHCP made sure the IP's were not the same, cloned my MAC address and power cycled everything.
So please, any help would be appreciated, I'm at the end of my rope so to speak with trying to deal with this. I know something must be configured incorrectly but I can't figure out what it is. Any help is appreciated and if you need to see a certain page feel free to ask and I'll throw it up.
Also the night before when I was having issues it would first show and internet connection but then after a minute or two would display no internet connected. While now it's immediately no internet connected.
(wall jack) ----- (modem/router) ----- (router)
Older Linksys hardware (and possibly newer Linksys hardware if they're still idiots) has a problem with the WAN port. The problem is that the WAN port is only a 10BaseT connection and can't negotiate with anything other than that.
Many cable modems have long since dropped 10BaseT support and have moved up to 100BaseTX. This presents a problem because the Linksys router can't negotiate a connection to the cable modem at 100BaseTX and will just keep trying to re-negotiate the connection down to 10baseT, which will never happen.
The only way to fix the problem is to place a switch between the router and the cable modem and let the switch negotiate the connection. This really doesn't make sense in a situation like yours because you already have a router in the modem. If I were you, I'd just trash the WRT54G and go buy either a newer wireless router or just a WAP (wireless access point that uses the router on the cable modem to hand out IP addresses.)
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