Hi,

I've just got this Sitecom WP 130 wireless range extender working but
there's a strange problem.

If I use the old wireless PCMCIA card that I have, everything is
fine.  If I use the fancy 54mbps MIMO one, I get a message about
"duplicate ip address".  I've tried re-starting the hardware to see if
there's some table that needs clearing out but that didn't help.

I've tried setting the IP address manually but then it doesn't work at
all.

Any suggestions?

Cheers.

Peter.

"Peter Smithson"  wrote in message 
news:e2581282-16a2-4a66-aef0-367c72b7d6d2@59g2000hsb.googlegroups.com...
> Hi,
>
> I've just got this Sitecom WP 130 wireless range extender working but
> there's a strange problem.
>
> If I use the old wireless PCMCIA card that I have, everything is
> fine.  If I use the fancy 54mbps MIMO one, I get a message about
> "duplicate ip address".  I've tried re-starting the hardware to see if
> there's some table that needs clearing out but that didn't help.

Have you tried restarting the router as well? It's possible that the 
following has happened:

1. PC1 with PCMCIA card connects and is given IP address X

2. PC2 connects and is given address Y

3. PC1 is rebooted with MIMO card and again asks for an IP address. This 
card has a different MAC address so the router's DHCP server thinks it's a 
new PC and gives it a new IP address - but for some reason it gives it 
address Y, thinking that this is no longer in use.

In other words, the router's DHCP could have become a bit confused. Try 
rebooting everything, in the following order:

1. router
2. range extender
3. PC2
4. PC1 with MIMO card

letting the router start fully before starting the range extender and 
letting the RE start before starting any PC that uses it.

One other thought: you have excluded the RE's IP address from the router's 
DHCP pool so the router doesn't try to give that address to a PC?

On Sun, 21 Sep 2008 07:04:48 -0700 (PDT)
Peter Smithson  wrote:

> Hi,
> 
> I've just got this Sitecom WP 130 wireless range extender working but
> there's a strange problem.
> 
> If I use the old wireless PCMCIA card that I have, everything is
> fine.  If I use the fancy 54mbps MIMO one, I get a message about
> "duplicate ip address".  I've tried re-starting the hardware to see if
> there's some table that needs clearing out but that didn't help.
> 
> I've tried setting the IP address manually but then it doesn't work at
> all.
> 
> Any suggestions?
> 
The PC is smart enough to notice that two adapters have the same
address, and not smart enough to realise that you won't be using them
both at the same time.  Uninstall the old one and the message should go
away.

On Sep 22, 1:27 am, Rob Morley  wrote:

> The PC is smart enough to notice that two adapters have the same
> address, and not smart enough to realise that you won't be using them
> both at the same time.  Uninstall the old one and the message should go
> away.

Hi,

I don't think that can be it.  If that was the case, then un-plugging
the MIMO card and plugging in the old one would not fix the problem.

Also, they shouldn't be assigned an IP address when the PCMCIA card is
removed.  If I type "ipconfig" with nothing connected, there is no IP
address.

Peter

On Sep 21, 3:22 pm, "Mortimer"  wrote:

> In other words, the router's DHCP could have become a bit confused. Try
> rebooting everything, in the following order:
>
> 1. router
> 2. range extender
> 3. PC2
> 4. PC1 with MIMO card
>
> letting the router start fully before starting the range extender and
> letting the RE start before starting any PC that uses it.

I did cold boot the router too but I'm not sure what order I did it
all in now so I'll try that all again when I get home.  It might have
forgotten by now anyway - I believe these things expire.

> One other thought: you have excluded the RE's IP address from the router's
> DHCP pool so the router doesn't try to give that address to a PC?

I think I'm OK on that one for a while.  The RE's IP ends with .254.
The allocated IP's start at .2.  I've not explicitly excluded it but I
don't have that many devices.  Good point though.

Peter.