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Re: [Karlnet] Problem with RG-1100, SR-4200, running NAT

To: <karlnet@wispnotes.com>
Subject: Re: [Karlnet] Problem with RG-1100, SR-4200, running NAT
From: "Bob Hrbek" <bhrbek@jagwireless.com>
Reply-to: karlnet@WISPNotes.com
Date: Mon, 21 Oct 2002 14:15:18 -0500
List-post: <mailto:karlnet@WISPNotes.com>
Did you disable bridging on the NAT RG's?

If you are doing NAT....There should be nothing checked on the left side of
the General option on the configurator.  Otherwise, your NAT ip's will leak
onto your public network.

-bob


----- Original Message -----
From: "Brian H. Oak" <oakb@infosystems1.com>
To: <karlnet@WISPNotes.com>
Sent: Monday, October 21, 2002 11:53 AM
Subject: [Karlnet] Problem with RG-1100, SR-4200, running NAT


> We service two very different cities: in one of them we perform
> routing at every stage of the wireless game, but we don't use NAT or
> firewalling at the customer premise; in the other city we bridge
> everything wireless and have to use NAT on the CPE.
>
> We have been using RG-1100s with the SR-4200 (Satellite) image in the
> routing city for quite some time, always with great success.  We have
> recently begun rolling out the same hardware/software for the CPE in
> the bridging city, obviously configured differently to match the
> different network circumstances.
>
> Every installation (and there are quite a few) of the RG-1100/SR-4200
> combo on the bridged network has had the same problem.  We configure
> NAT as directed in the KarlNet docs.  The customer network loses
> connectivity several times every minute.
>
> When watching the RG-1100 remotely, we never see a single radio
> interface problem.  Connectivity is solid and consistent, with low
> two-digit ping times.  But when pinging the Ethernet interface of the
> RG-1100 from inside the customer network, ping times are always
> mid-three-digits and the interface seems to just disappear for several
> seconds three or four times every minute.
>
> I have to wonder if the NAT processes are simply swamping the
> (admittedly limited) resources of the RG-1100s; we have *never* seen
> this problem on our routed, no-NAT network in the other city, but we
> see it with *every* NAT installation.  Or, maybe we're setting them up
> incorrectly -- the docs are pretty sparse.  Or, maybe there is a
> problem with this version of the KarlBridge/Router software.  One way
> or another, we have a MAJOR problem that we need to solve... soon!
> Any help would certainly be appreciated.
>
> What we are running:
>    RG-1100 with card firmware v7.52
>    SR-4200 v4.02
>
> Thanks,
>
> -Brian
> ____________________________________________________________
> Brian H. Oak    CISSP CCDP CCNP CCA NNCAS    Datawav-IS, LLC
> Principal Engineer              109 N. Arthur Ave., Ste. 301
> (208) 232-6860                          Pocatello, ID  83204
> (208) 232-0185 fax                    brian@infosystems1.com
>
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