Rocky Smolin - Beach Access Software
bchacc at san.rr.com
Mon Nov 3 12:18:41 CST 2003
So I just did and IPCONFIG through the dos command and find my IP is 192.168.1.101 and the subnet is 255.255.255.0. So does my router think I might have as many as 256 machines (or addressable devices, I guess) connected to IP 192.168.1.101? Rocky ----- Original Message ----- From: "Drew Wutka" <DWUTKA at marlow.com> To: "'Access Developers discussion and problem solving'" <accessd at databaseadvisors.com> Sent: Monday, November 03, 2003 8:08 AM Subject: RE: [AccessD] OT: Wireless network (sort of) > Think of a subnet as a neighborhood. A network neighborhood. The subnet > 'mask' is a property in TCP/IP, which tells your machine what IP addresses > are around it. It's a bitmask thing. > > 192.168.0.1, with a subnet mask of 255.255.255.0 tells the machine that > 192.168.0.1 through 192.168.0.255 are around it. If the bit is turned on in > the subnet mask, IP Addresses in that subnet must have a matching bit > (either on or off....), if it's turned off in the subnet, that bit in the IP > address can be different. So 255.255.255.254 for a subnet, is a subnet of 2 > machines. > > The reason this is important, is because subnets control how much > broadcasting and browsing your machine must do, to locate other computers on > the network. A subnet of 255.255.0.0 tells your computer there are 65k > machines on the subnet, and more then likely you will never find anything, > because it will eventually give up. 255.255.255.0 tells it there are 256 > (255) computers on the subnet, which it should be able to find just fine. > However, if you have a smaller network, a smaller subnet speeds up the > 'searching'. > > That leads to what I was talking about earlier...the Gateway (router). When > you tell a machine to go to 123.456.789.321, if that IP Address is not on > the subnet, it doesn't even bother looking, it just sends the request to the > gateway IP (router), so the router does the searching. > > Drew > > -----Original Message----- > From: Rocky Smolin - Beach Access Software [mailto:bchacc at san.rr.com] > Sent: Friday, October 31, 2003 6:53 PM > To: Access Developers discussion and problem solving > Subject: Re: [AccessD] OT: Wireless network (sort of) > > > O. What's a subnet? And where do I get one? And do I want one? > > Rocky > > ----- Original Message ----- > From: "Drew Wutka" <DWUTKA at marlow.com> > To: "'Access Developers discussion and problem solving'" > <accessd at databaseadvisors.com> > Sent: Friday, October 31, 2003 9:20 AM > Subject: RE: [AccessD] OT: Wireless network (sort of) > > > > Yes, a switch is used to connect computers on the same subnet. A router > is > > used to connect subnets together. A router is usually also a switch, so > it > > can connect computers on the same subnet, AND connect one subnet to > another. > > > > Drew > > > > -----Original Message----- > > From: Rocky Smolin - Beach Access Software [mailto:bchacc at san.rr.com] > > Sent: Friday, October 31, 2003 9:20 AM > > To: Access Developers discussion and problem solving > > Subject: Re: [AccessD] OT: Wireless network (sort of) > > > > > > Is there a difference between a switch and a router? > > > > Rocky > > > > ----- Original Message ----- > > From: "Frank Tanner III" <pctech at mybellybutton.com> > > To: "Access Developers discussion and problem solving" > > <accessd at databaseadvisors.com> > > Sent: Friday, October 31, 2003 6:54 AM > > Subject: RE: [AccessD] OT: Wireless network (sort of) > > > > > > > I recommend "hardwiring" the IP address of any device > > > or server connected to your LAN that's not a > > > workstation and is virtually always on. > > > > > > For the price, I would also highly recommend removing > > > all hubs from your network and using them as > > > doorstops. Switches have come way down in price and > > > have many benifits over hubs. > > > > > > Hubs divide the bandwidth across all ports. Thus if > > > you have an 8-port 10-BaseT hub, all ports that are > > > processing data split that 10Mbit. A switch, each > > > port gets the fill bandwidth. > > > > > > That's not including the security issues inherent with > > > hubs as they broadcast all available data to all > > > available ports rather than to the proper destination > > > port. > > > > > > --- John Colby <jcolby at colbyconsulting.com> wrote: > > > > Yes, you can indeed daisy chain routers and > > > > SUPPOSEDLY hubs, though I had no > > > > joy doing that with my old hub. I am however daisy > > > > chaining my old 4 port > > > > router off of my new 4 port wireless router. The > > > > newer models even figure > > > > out what kind of cable you are using, crossover or > > > > regular. The biggest > > > > issue there was that the router was the dhcp server > > > > so I had to turn off the > > > > old as a dhcp server and turn on the new. I also > > > > hardwired the address of > > > > the old router to 192.168.1.2. Daisy Chaining two 4 > > > > port routers isn't a > > > > panacea however since you now end up using two ports > > > > just for the daisy > > > > chain and have 6 left. In my case though I also > > > > have a wireless so I can > > > > get my laptop in through that and could also get > > > > other computers in if > > > > needed. > > > > > > > > I have an old model I TIVO which I modded to use the > > > > internet to "call in" > > > > for programming. I had to snake a cable down the > > > > wall from the living room > > > > (luckily exactly over my office in the basement). I > > > > understand that the > > > > model II has USB ports that can automatically use > > > > the USB wireless cards to > > > > connect to the internet. > > > > > > > > John W. Colby > > > > www.colbyconsulting.com > > > > > > > > -----Original Message----- > > > > From: accessd-bounces at databaseadvisors.com > > > > [mailto:accessd-bounces at databaseadvisors.com]On > > > > Behalf Of Rocky Smolin - > > > > Beach Access Software > > > > Sent: Friday, October 31, 2003 8:33 AM > > > > To: Access Developers discussion and problem solving > > > > Subject: Re: [AccessD] OT: Wireless network (sort > > > > of) > > > > > > > > > > > > John: > > > > > > > > I heard that you can daisy chain hubs off one of the > > > > ports on your router to > > > > get more ports and that you can go up to 255 devices > > > > from one router this > > > > way. Seems to easy and cheap, though. > > > > > > > > I've also found that when creating a new network it > > > > sometimes takes a few > > > > minutes for the different shared devices to 'see' > > > > each other - especially on > > > > the wireless. So I'll whang around frustrated > > > > trying to get the network to > > > > work and then have the same experience you had - > > > > after a few minutes, > > > > suddenly the other machines are in my network > > > > neighborhood. Go figure. > > > > > > > > Rocky > > > > > > > > ----- Original Message ----- > > > > From: "John Colby" <jcolby at colbyconsulting.com> > > > > To: "Database Advisors Inc. (Tech)" > > > > <Dba-Tech at databaseadvisors.com>; > > > > "AccessD" <AccessD at databaseadvisors.com> > > > > Sent: Thursday, October 30, 2003 5:39 PM > > > > Subject: [AccessD] OT: Wireless network (sort of) > > > > > > > > > > > > > I ordered a Netgear MR814v2 Wireless router a > > > > couple of weeks ago. I > > > > needed > > > > > to expand my 4 port router (I had 5 things I kept > > > > needing to plug in) and > > > > > the Netgear was on sale at www.Newegg.com at the > > > > time. I then tried and > > > > > failed to install a linksys WPC11v2.5 I had laying > > > > around, so I ordered a > > > > > dlink dwl-650 that was on sale (rebate) at > > > > www.newegg.com. Long story > > > > > short, it didn't work. Long story a little > > > > longer, a very long call to > > > > > dlink tech support, did not solve the problem. > > > > > > > > > > Or maaaaaybe it did. After failing to figure > > > > anything out, they > > > > recommended > > > > > that I upgrade my laptop bios. It's an ancient > > > > (now) 233mhz PII Toshiba > > > > > Satellite 4000 that I bought with my first > > > > paycheck from my trip to work > > > > for > > > > > Mr. Breen in Dublin Ireland back in hmmm..... > > > > November 1997? Getting a > > > > bit > > > > > long in the tooth, truth be told. > > > > > > > > > > The bios upgrade and also the old "turn off NAV > > > > before installing etc. > > > > And > > > > > "oh by the way, our card requires at least a 300 > > > > mhz processor. So I > > > > > uninstalled, upgraded to the latest bios (May > > > > 2000?), turned off NAV, > > > > > reinstalled the drivers and re-installed the card. > > > > Still no joy. The > > > > site > > > > > survey showed no transmitters, and dlink tech > > > > support assured me that if > > > > > there was a transmitter I would see it regardless. > > > > > > > > > > Ignorant liars! > > > > > > > > > > Went back in and reconfigured the card in the > > > > laptop for channel 11 (it > > > > > defaulted to 3 and the router was on 11), played > > > > around with a couple of > > > > > other things and boom, I see a transmitter. Went > > > > in to the router config > > > > > page and changed the SSID and sure enough the > > > > thing I'm seeing on the > > > > laptop > > > > > changes to match! Still no connection though. > > > > > > > > > > Rebooted, played around some more and suddenly (no > > > > clear idea why) I have > > > > a > > > > > wireless connection, can browse my network and see > > > > the web. Yeaaaaa. > > > > > > > > > > Moral of the story, tech support generally sucks, > > > > play around, don't quit, > > > > > and eventually the gods will reward you. Or not. > > > > > > > > > > Now, I need to know what to do to tighten this > > > > thing up so that others > > > > can't > > > > > see my network. I'm a bit afraid to touch > > > > anything since I don't really > > > > > know what I did to finally get it running. > > > > > > > > > > Can anyone walk me through tightening this up? > > > > > > > > > > John W. Colby > > > > > www.colbyconsulting.com > > > > > > > > > > > > > > > _______________________________________________ > > > > > AccessD mailing list > > > > > AccessD at databaseadvisors.com > > > > > > > > > http://databaseadvisors.com/mailman/listinfo/accessd > > > > > Website: http://www.databaseadvisors.com > > > > > > > > > > > > > _______________________________________________ > > > > AccessD mailing list > > > > AccessD at databaseadvisors.com > > > > http://databaseadvisors.com/mailman/listinfo/accessd > > > > Website: http://www.databaseadvisors.com > > > > > > > > > > > > > > > > _______________________________________________ > > > > AccessD mailing list > > > > AccessD at databaseadvisors.com > > > > http://databaseadvisors.com/mailman/listinfo/accessd > > > > Website: http://www.databaseadvisors.com > > > > > > _______________________________________________ > > > AccessD mailing list > > > AccessD at databaseadvisors.com > > > http://databaseadvisors.com/mailman/listinfo/accessd > > > Website: http://www.databaseadvisors.com > > > > > > > _______________________________________________ > > AccessD mailing list > > AccessD at databaseadvisors.com > > http://databaseadvisors.com/mailman/listinfo/accessd > > Website: http://www.databaseadvisors.com > > _______________________________________________ > > AccessD mailing list > > AccessD at databaseadvisors.com > > http://databaseadvisors.com/mailman/listinfo/accessd > > Website: http://www.databaseadvisors.com > > > > _______________________________________________ > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com > _______________________________________________ > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com >