Originally Posted by cwnelson
I haven't ever given static addresses for things on my network but I have thought about doing it. I know how to do that on a TiVo but I don't know what the address pool is or how to find out what it is. Can you give me a little bit of direction?
I also reconnected my series 2 since the Premiere isn't working and it also connects to the network but the network does not see it. It has a much lower number on the network than the tivos and the Roamio has the highest and it is visible on my network and the Tivo app. I have occasionally had this problem with my Series 2.
I only have experience with the Linksys BEFSR41 non-wireless router and the Linksys WRT54G wireless router.
Both come from the factory set to a default IP address of 192.168.1.1
That's the IP address the router has on the LAN side, which is everything except the cable or DSL modem.
I've got a cable modem and I set the router on the WAN side to accept whatever DHCP address the modem gives it.
The modem I have defaults to an address for itself, on the side facing the router, of 192.168.100.1, which leaves it free to give the router any address between 192.168.100.2 and 192.168.100.254, which it'll do via DHCP
I don't need to worry about that part.
If all is well, it just works.
On the cable company side of the modem it'll get an address assigned, in my case via DHCP, by the cable company's equipment////that starts with something other than 192.
////( I was asleep and hallucinating and thinking about something else when I wrote that last part.)
If I power down the modem, when I power it back up it might get the same IP address or it might get a different one.
I don't need to worry about that part, either.
Again, if all is well, it just works.
The part I need to mess with is the LAN side of the router.
To change settings on the router, I enter 192.168.1.1 into the address bar on a web browser (like IE, Firefox, Chrome, etc) on a computer with an Ethernet cord plugged into it and one of the LAN ports on the back of the router.
This brings up a popup asking me for a name and password.
One the Linksys units you leave the name blank and type admin for the password if you haven't already changed the default settings.
Other brands of routers might have a default of admin for the name and admin for the password.
You can find out in the owner's manual or Google the brand and model number of the router and one of the first hits will be where somebody answered somebody asking for the default.
This gets me into a web page served up by the router where I can monkey with the settings.
At this point an owner's manual, either on paper or on another browser window or a downloaded PDF of it comes in handy.
With a default IP for the router of 192.168.1.1, the address for the entire LAN is 192.168.1.0 and the address you send something to if you want everything on the network (the LAN) to take note of it is 192.168.1.255
That address ending in .255 is called the broadcast address 'cause it's the one everything listens on regardless of what address it listens on for stuff that's only for it.
That means that .0, .1, and .255 are off limits for anything else on the LAN, but that .2 through .254 are fair game.
If you only have 2 or 3 things that leave the house and need the flexibility to connect to the LAN at home and some other network when out, you could adjust the pool of addresses which the router has available to hand out via DHCP to say 5 of them, .250 through .254, and that'll accommodate your 2 or 3 and an unforeseen one or two.
In the future, if you need to, you can increase the pool by lowering the .250 to say .245 or .240 or whatever.
And at the other end, you can assign fixed IP addresses to stuff that doesn't leave the house, like TiVos and desktop computers.
In the above example you have a range of from .2 to .249 and if you're anywhere near needing over 200 different IP addresses for devices on your home network you need to hire a full time sys admin.
For flexibility's sake I spread them out, starting the PCs at .100 and the TiVos at .200, but you could start at .2 and work your way up or scatter them wildly anywhere among the 248 available ones if you want to.
The point, to me, of using fixed IP addresses when possible is that that way the device tells the router what its address is and that's that, end of discussion, whereas with DHCP they have to negotiate it.
No negotiation, no chance of the negotiation hitting a snag.
Also, DHCP "leases" tend to be for a shorter period of time than "forever", so a fixed IP address avoids the risk of "timing out".