Sounds normal from what I remember, too.
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Wed, Jan 28, 2015 at 3:36 PM, John Woodfield <john.woodfi...@jwcn.biz> wrote: > Yes, that is typical behavior for a cable modem. > > > > > > > > John Woodfield Delmarva WiFi http://www.delmarvawifi.com cell (410) > 708-1937 > > > > -----Original Message----- > From: "That One Guy" <thatoneguyst...@gmail.com> > Sent: Wednesday, January 28, 2015 3:34pm > To: "af@afmug.com" <af@afmug.com> > Subject: [AFMUG] cable modem question > > what i see with one provider is that when you start a cable modem it is > a DHCP server (motorola surfoboards) handing out a 192.168.100.x Ip > gatewaying to the management interface 192.168.100.1 of the modem. > After the device completes network entry it converts to a bridge and you > get your public IP space > i assume this is a common practice, but i dont know, we only deal with one > cable company around here. > I hate this joint because they MAC filter for static IP space, which if > fine and good, but its an up to 24 hour provisioning time to be able to > switch out a firewall. > So today we went to go swap one prior to the provision, and after we put > in our device and restarted their cable modem, it would never hand us > anything other than the internal management range from the modem, like it > never completed network entry. Called them, and their tech said he could > see the physical connection, but no MAC. I kept telling him it was getting > handed the management range from the surfboard, he kept assuring me the > modem was strictly a bridge and contained no DHCP server ever at any point. > I finally told him to reprovision the device in their system, he said it > wouldnt o any good but complied. After restart it completed entry and we > got public IP assignment. > I assume network entry isnt the correct term for cable modems being > configured once they register to the network. But is this how its supposed > to work where the modem is a dhcp server (I assume i router) until the > cableco says otherwise to it? Its how Ive always seen it happen. At home > once, after a flood of DMCA hits, they blacklisted my modem and this was > the behavior, like their system refused to let it enter and convert to a > bridge. > -- > All parts should go together without forcing. You must remember that the > parts you are reassembling were disassembled by you. Therefore, if you > can't get them together again, there must be a reason. By all means, do not > use a hammer. -- IBM maintenance manual, 1925 >
