Some cable provides latch onto the Mac address of the device being plugged into it. And you have to reset the cable modem.
Chris Greg Ihnen <[email protected]> wrote: >I posted this on the MT forum but I wanted to throw it out here too. Thanks. > >I've got an RB-750 that I want to replace with an RB-750G and I can't get any >connectivity between the RB-750G and the Motorola Surfboard cable modem. > >First I exported in imported the RB-750's config into the RB-750G but the >RB-750G didn't seem to be getting a DHCP address from the Motorola Surfboard >cable modem on it's Ether1-Gateway port. I had a link light but no >connectivity, the RB-750G wouldn't even respond to a ping from the internet. >Then I tried the RB-750G with the default config (after \system reset) and it >still wouldn't work. Again I had a link light but no connectivity in or out. >Next I disabled the RB-750G's DHCP client on the Ether1-Gateway port and >manually configured it for the public IP address that the Surfboard has been >giving out via DCHP for years. It's a dynamic IP address but it never changes >even after widespread system wide outages experienced by the cable company. >That seems to be our address. Anyway, Even with the IP address manually >configured I still couldn't get any connectivity. > >I'm located in South America and the modem/RB-750G in question are in NY. I'm >managing all this remotely. When I was testing connectivity I was trying to >ping the router from the internet, connect to the router via WinBox from the >internet, and by having the local users attempt to access the internet. All of >those failed. > >Now my guess is the RB-750G and modem are not successfully auto-negotiating >the Ethernet port parameters. So I had the user pick up a cross over cable >which I'm going to try next with the RB-750G set to 100Mbps and full duplex. > >Any ideas about what the problem could be would be greatly appreciated. > >Greg > > >-------------------------------------------------------------------------------- >WISPA Wants You! Join today! >http://signup.wispa.org/ >-------------------------------------------------------------------------------- > >WISPA Wireless List: [email protected] > >Subscribe/Unsubscribe: >http://lists.wispa.org/mailman/listinfo/wireless > >Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
