[GRLUG] finding dhcp lease info

[Dave Chiodo]

For anyone seeking the "REAL" WRT54G, these folks sell them:

http://www.bhphotovideo.com/c/product/440466-REG/Linksys_WRT54GL_WRT54GL_Wireless_G_Broadband_Router.html



On Sun, Jan 26, 2014 at 1:05 PM, Mike Williams <knightperson at zuzax.com>wrote:

>  +1 to this. A while back, the newer versions of the venerable WRT54G
> series of routers started shipping with much weaker hardware and a VxWorks
> operating system instead of the classic Linux firmware. Not coincidentally,
> they also started to suck at the same time! I recommend Tomato firmware if
> your device can take 3rd party builds. I ran it on my current router for
> years, only replacing it because my box doesn't have enough memory to run a
> 2.6 kernel.
>
> As I understand it, a DHCP reservation for a particular device can be
> added within the scope of the dynamically assigned ones. I think that's
> even the official way, although all but the stupidest firmware could hand
> one out from outside the range also.
>
> On 01/25/2014 01:11 AM, Dave Chiodo wrote:
>
> Sounds screwy. But with the canned firmware those things comes with, who
> knows. I tend to avoid the "stock" firmware and prefer OpenWRT or Tomato.
>
>  I can't imagine any reason having some fixed-IP devices would be a
> problem. Technically even if they were in the DHCP range it should be ok,
> as the DHCP service SHOULD do a ping to make sure an address isn't claimed
> before assigning it. (keyword "should" - so probably better to keep them
> non-overlapping)
>
>
> On Fri, Jan 24, 2014 at 9:55 PM, Eric Beversluis <
> ebever at researchintegration.org> wrote:
>
>> On Fri, 2014-01-24 at 21:28 -0500, Dave Chiodo wrote:
>> > The guy sounds like he has no idea what he's talking about.
>> >
>> >
>> > Are you trying to get the IP address that has been assigned to the
>> > router from upstream(the ISP)?
>> >
>> >
>> > Or are you trying to see which IP's its DHCP server to client
>> > PCs/devices?
>> >
>>  Just wanting to see which leases the router has provided to my various
>> computers and printers. The attached devices list doesn't give all the
>> outstanding leases and, for some reason, doesn't show the address
>> assigned to the Mac, just shows its MAC and dashes in the IP addr box.
>>
>> It's probably worth my while to reset the router to fac default and
>> reconfig it to see if that helps.
>>
>> Is there any reason that having some devices with fixed IP addresses
>> should cause problems for a lower end router like this? There's no
>> overlap with the assigned DHCP range.
>>
>> >
>> >
>> >
>> >
>> >
>> > On Fri, Jan 24, 2014 at 7:36 PM, Eric Beversluis
>> > <ebever at researchintegration.org> wrote:
>> >         I just spent a frustrating time (incl 20+ min waiting) on chat
>> >         with
>> >         Netgear to learn how to find the dhcp leases on one of their
>> >         wireless
>> >         routers (WPN824N). After being hassled for when and where I
>> >         bought it (I
>> >         thought Microcenter, but wasn't sure) the guy finally said
>> >         that you
>> >         couldn't find the info there but had to look at the modem.
>> >
>> >         "As I checked my resources about the concern, there is no
>> >         settings in
>> >         the router which you can configure and view the DHCP list.
>> >         Because it
>> >         can only be found on the modem's interface.
>> >         Eric Beversluis: ???? That's never been the case with any
>> >         other wireless
>> >         router I've had. The moden wouldn't know anything about it
>> >         since the
>> >         NAT'ing is done with the router.
>> >         Johnpaul Delatorre: You can check on the modem's interface
>> >         where to
>> >         locate the list of DHCP leases and how to configure it."
>> >
>> >         Am I totally wrong in thinking this was nonsense? The router
>> >         is doing
>> >         the NAT'ing and assigning the DHCP leases, so why would that
>> >         info be on
>> >         the modem and not on the router?
>> >
>> >         I'm thinking they just didn't bother to make that info
>> >         available on this
>> >         particular model. But why would they do that? Surely it's just
>> >         some
>> >         boilerplate coding to include in the webconfig pages. I don't
>> >         think I've
>> >         ever had a wireless router that didn't show this.
>> >
>> >         Or am I all wet?
>> >
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>> >
>> >
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