make 2nd router an access point

[rjohnsto]

Hello,  Looking for a way to create an access point only, with an R6220 on my existing N300 Router.    The catch is that I want to use 192.168.4.1 as the IP for the access point.  Is this feasible with causing any issues with the current setup.   I realize the 6220 is a better choice for the primary and will probably switch them later, but just have to get this settled first.  thx

[antinode]

> [...] Looking for a way to create an access point only, with an R6220
> on my existing N300 Router.

   Huh?  Do you mean that you want to configure an R6220 as a wireless
access point?  Here's a radical concept which works for some people:

      https://en.wikipedia.org/wiki/RTFM

   Visit http://netgear.com/support , put in your (actual) model number,
and look for Documentation.  Get the User Manual.  Look for "Use the
Router as a Wireless Access Point".

   None of "my existing N300 Router" is a useful model identifier.  On a
Netgear router, look for "Model" on its product label.

> [...] The catch is that I want to use 192.168.4.1 as the IP for the
> access point. [...]

   Why?  It's ok with me, but whether that makes any sense with your
existing router configuration is another question.  I suspect not.

> [...] Is this feasible with causing any issues with the current setup.

   Treating that as a question (see "?" on keyboard), how much do you
think that the non-psychics in your audience know about your "the
current setup"?

   Generally, a WAP uses the same IP address subnet as the main router,
and a router on a "192.168.4.*" subnet would typically already occupy
"192.168.4.1", making that address unsuitable as an address for a WAP.

   General advice: You might have more success if you described the
actual problem which you are trying to solve, rather than asking how to
implement some particular "solution" ("use 192.168.4.1 as the IP
[address] for the access point"), which may have little or nothing to do
with the actual problem (whatever it might be).

> [...] I realize the 6220 is a better choice for the primary [...]

   That'd be my guess, but it might depend on where your wireless client
devices live, and their other properties.

[rjohnsto]

The R6220   would be paired with a ( WNR2000).... (The unit has n300 on the rear) 

So the reason is this.  I have a couple Acurite weather stations  and in order to get them online to be usable on an Iphone, etc, you have to buy an Acurite wi-fi station($$$), all of which is another just another router using 192.168.4.1 as it's default.   I had this newer 6220 router sitting here for a couple months  as a backup for the WNR2000 (4-5 years old) .  Just thought I could get away with using it with the weather data 

[antinode]

> [...] a ( WNR2000).... (The unit has n300 on the rear)

   There are many hardware versions of WNR2000: WNR2000[v1], WNR2000v2,
..., WNR2000v5.

> [...] look for "Model" on its product label.

   Did you?

> [...] I have a couple Acurite weather stations [...]
> an Acurite wi-fi station($$$), [...]

   Thanks for the model numbers and the links to relevant documentation.

> [...] all of which is another just another router using 192.168.4.1 as
> it's default. [...]

   I know nothing about these gizmos, but none of that sounds very
plausible.  At least one of us doesn't know how these things should be
configured/used.