IP address already in use?

Configuration:
ADSL line -> Alcatel 1000 ADSL modem ->LinkSys BEFSR41 router -> Apple
Airport Graphite (one Ethernet port) wireless access point

Got this message from Mac OS X 10.2.8:
IP address 192.168.1.1 already in use by [a long address
that looks like a MAC address]

I had just fixed a problem with the router by manually pointing it to the DSL
modem's IP address. Don't know if the modem stopped issuing IP addresses
automatically, or that the router couldn't find one. Problem seemed to be
solved. All computers were happy.

A few minutes later, one of the laptops (the only wireless-capable one)
issued an error message:

IP address 192.168.1.1 already in use by [a long address
that looks like a MAC address]

I re-checked all the IP's for these devices. This address is used by only one
of them. I don't see where there could be a conflict.

Any suggestions where to look next would be greatly appreciated.

Thanks,
--
DaveC
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Please reply in the news group



DaveC

DaveC wisely said the following on 19/12/2003 14:00:
<snip>
>
> I re-checked all the IP's for these devices. This address is used by only one
> of them. I don't see where there could be a conflict.
>
> Any suggestions where to look next would be greatly appreciated.
>
> Thanks,

That is the IP address of the internal interface of the router.

Don't use 192.168.1.1

Use 192.168.1.2-255

ST

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Lord Shaolin <abuse@127.0.0.1> wrote:

> That is the IP address of the internal interface of the router.
>
> Don't use 192.168.1.1
>
> Use 192.168.1.2-255

Don't use .255 - that's the broadcast address.

Jim
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laws of right and wrong break down; beyond those metaphysical
event horizons there exist ... special circumstances" - Use Of Weapons

On Fri, 19 Dec 2003 14:36:09 +0000, Lord Shaolin <abuse@127.0.0.1>
wrote:

>DaveC wisely said the following on 19/12/2003 14:00:
><snip>
>>
>> I re-checked all the IP's for these devices. This address is used by only one
>> of them. I don't see where there could be a conflict.
>>
>> Any suggestions where to look next would be greatly appreciated.
>>
>> Thanks,
>
>That is the IP address of the internal interface of the router.
>
>Don't use 192.168.1.1
>
>Use 192.168.1.2-255

Normally on routers DHCP operates by default and that normally starts
at 192.168.1.10

It does seem that DaveC has set an incorrect IP address somewhere.

Geoff Lane

Lord Shaolin <abuse@127.0.0.1> wrote in
news:(E-Mail Removed):

> DaveC wisely said the following on 19/12/2003 14:00:
> <snip>
>>
>> I re-checked all the IP's for these devices. This address is used by
>> only one of them. I don't see where there could be a conflict.
>>
>> Any suggestions where to look next would be greatly appreciated.
>>
>> Thanks,
>
> That is the IP address of the internal interface of the router.
>
> Don't use 192.168.1.1
>
> Use 192.168.1.2-255
>
> ST
>

Just to be safe I usually tell it to start in the 100 block. 100, 101,
102...

DaveC wrote:
> Configuration:
> ADSL line -> Alcatel 1000 ADSL modem ->LinkSys BEFSR41 router -> Apple
> Airport Graphite (one Ethernet port) wireless access point
>
> Got this message from Mac OS X 10.2.8:
> IP address 192.168.1.1 already in use by [a long address
> that looks like a MAC address]
>
> I had just fixed a problem with the router by manually pointing it to the DSL
> modem's IP address. Don't know if the modem stopped issuing IP addresses
> automatically, or that the router couldn't find one. Problem seemed to be
> solved. All computers were happy.
>
> A few minutes later, one of the laptops (the only wireless-capable one)
> issued an error message:
>
> IP address 192.168.1.1 already in use by [a long address
> that looks like a MAC address]
>
> I re-checked all the IP's for these devices. This address is used by only one
> of them. I don't see where there could be a conflict.
>
> Any suggestions where to look next would be greatly appreciated.
>
> Thanks,

Linksys routers use 192.168.1.1 and Belkin seems to use 192.168.0.1 but
in any event DHCP normally starts with 192.168.1.2 with the Belkins and
the old Linksys I had it started with 192.168.1.100 if I remember correctly.

Type one of the first two numbers in your browser URL box and you will
go to that routers setup routine.

In article <(E-Mail Removed)>,
Bill Leeper <(E-Mail Removed)> wrote:

> Linksys routers use 192.168.1.1 and Belkin seems to use 192.168.0.1 but
> in any event DHCP normally starts with 192.168.1.2 with the Belkins and
> the old Linksys I had it started with 192.168.1.100 if I remember correctly.

My belkin uses 192.168.2.1 and assigns devices using 192.168.2.n

--
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On Tue, 23 Dec 2003 6:14:55 -0800, Bill Leeper wrote
(in message <(E-Mail Removed)>):

> Linksys routers use 192.168.1.1 and Belkin seems to use 192.168.0.1 but
> in any event DHCP normally starts with 192.168.1.2 with the Belkins and
> the old Linksys I had it started with 192.168.1.100 if I remember correctly.

192.168.1.100 worked.

Thanks,
--
DaveC
(E-Mail Removed)
This is an invalid return address
Please reply in the news group

In article <(E-Mail Removed)>, Bill Leeper
<(E-Mail Removed)> wrote:

> Linksys routers use 192.168.1.1 and Belkin seems to use 192.168.0.1 but
> in any event DHCP normally starts with 192.168.1.2 with the Belkins and
> the old Linksys I had it started with 192.168.1.100 if I remember correctly.

That's still the default behaviour for Linksys routers. I use it to my
benefit; for the machines that I want to have a static IP, I assign
something in the range of 192.168.1.2 through 192.168.1.99.

--
Dustin Emhart
(E-Mail Removed)