Is there a limit to the number of devices which can be connected?

jools27_2

Can anyone enlighten me, I have BT infinity. Is here a limit to the number of devices which can be connected to it? My brother is here from the states, and is unable to connect his I-pad, mac book air or I-phone to it, he has taken them into the apple store and they all work fine there, they all connected to a network needing a password in the shop so w were wondering if it was an issue with my router!

nearlyrich

I have been known to have 5 or 6 devices connected to ours when checking out kit for exhibitions etc. Have you got the right password?

jools27_2

yes the password's right. Apparently the daughter's boyfriends phone wont connect to it either!

Roland_Sausage

The theoretical limit is 255 as this is the amount of IP addresses that the router can hand out any one time.

Try changing the encryption type on the router. Before doing that, try restarting the router if you have not done this already.

Figment

Depends on how the IP range and subnet has been set up, but usually limited to at least 50 and up to 255 devices

See page 4 of the user and troubleshooting manual

http://bt.custhelp.com/ci/fattach/get/2175075/1322050495/redirect/1

debitcardmayhem

If it is an American one then if your router is using channels 12 or 13 then it may not work I seem to remember that those channels are not legal in the US....just a guess though

prowla

Roland_Sausage wrote: »

The theoretical limit is 255 as this is the amount of IP addresses that the router can hand out any one time.

Try changing the encryption type on the router. Before doing that, try restarting the router if you have not done this already.

assuming class c addresses.

It could relate to the encryption method; different kit can support different types.

Has the router been set up to only accept certain MAC addresses?

Norman_Castle

Check that your routers security is set to allow new devices.

This may help. Look for configure.
1) Click http://192.168.1.254/ . If you are prompted for a login the username is "Administrator" and the password is the serial number of your router (printed on its underside, excluding the bit in brackets).

jayme1

have you got MAC filtering turned on? that would prevent any new devices using the internet even with the correct router passkey.

securityguy

prowla wrote: »

assuming class c addresses.

Classful addressing is all a bit 1980s, and it's better to call a /24 a /24. For example, you'll sometimes find routers handing out 10.X.Y.0/24 addresses. That's 256 addresses, of which at most 253 are available for client devices. But that's not a class C, as the top three bits are not "110". You haven't been able to reliably extract the netmask from the initial bits of an address since RFC950 (1985) and absolutely haven't been able to since the introduction of CIDR in RFC1517-19 (1993). Twenty years is long enough to kill off the idea of classful networking, I think.

securityguy

prowla wrote: »

Has the router been set up to only accept certain MAC addresses?

Are the devices that are trying to join the network picking up the right network, and not, say, your neighbours'?