[nflug] Router Questions

Sat Apr 8 19:41:25 EDT 2006

If 'cmd' does not work, then use 'command'.  I don't recall if winipcfg
specifically says that you are DHCP configured or not.  Never bothered using it
since I could do it command-line. ;)

Kyle

Quoting Joe <josephj at main.nc.us>:

> I'll take another look, but I know cmd is an XP thing - not supported in
> 98.  winipcfg (or whatever it's called - I'm on Linux now) is the
> equivalent.
>
> Joe
>
> kobear at sharedbrain.net wrote:
> > Joe,
> >
> > You can see if you are using DHCP by going to a command prompt (Start -->
> Run
> > --> cmd) and typing "ipconfig /all".  Somewhere in there there should be a
> line
> > that says Dhcp Enabled : Yes|No
> >
> > HTH,
> > Kyle
> >
> >
> > Quoting Joe <josephj at main.nc.us>:
> >
> >
> >> I have it configured as Dave suggested (see my original post).
> >> The DSL modem lives at 192.168.1.1 (I'm not sure what else it uses, but
> >> they're in the 192.168.1.x range.)
> >> The VoIP uses 192.168,251,x addresses.
> >> I got these from the tech help configuring them and from Zone Alarm
> >> firewall logs.  I have added both of these local subnets to my trusted
> >> zones in Zone Alarm.  The DSL modem works a bit better now - less
> >> arguing after I kill it by inserting the VoIP - but the VoIP still
> >> doesn't work or pass through the Internet.
> >>
> >> Verizon sent me a new modem and Sunrocket finally called back from level
> >> 3.  Now I just have to get back to the location so I can call them back
> >> and work on it again.
> >>
> >> So the consensus seems to be that I don't need a router at this point.
> >> That I should just hook them up in a row and get them to work.
> >>
> >> I have no idea what Win 98se does regarding DHCP (I was at the last
> >> meeting, but I'm still not even sure what DHCP is. Forget configuring
> >> it!)  I don't really want to get into the depths of networking any more
> >> than I have to at this point.  I'm sure I'll have to learn quite a bit
> >> more if I ever get wireless equipment in the future, but for now, I can
> >> wait.
> >>
> >> Any idea how I can tell about DHCP on my laptop?  I've been running
> >> winipgcfg (release and restore) and sometimes that seems to help, but I
> >> don't know if that has anything to do with DHCP.
> >>
> >> Joe
> >>
> >> kobear at sharedbrain.net wrote:
> >>
> >>> Quoting "David J. Andruczyk" <djandruczyk at yahoo.com>:
> >>>
> >>>
> >>>
> >>>> --- Joe <josephj at main.nc.us> wrote:
> >>>>
> >>>>
> >>>>
> >>>>> I understand what a router is, but I've never worked with one, so
> >>>>> I've
> >>>>> got some basic questions.  I don't expect anyone on this list to
> >>>>> debug
> >>>>> my VoIP (SunRocket) problem.  The questions below are mostly OS and
> >>>>> vendor independent.
> >>>>>
> >>>>> I'm having trouble getting VoIP to work for my partner (I'll be
> >>>>> talking
> >>>>> to VoIP level 3 support later.)  She has Verizon DSL.  I don't
> >>>>> remember
> >>>>> the exact speeds, but it's about 800/168 (the slowest/cheapest).  The
> >>>>>
> >>>>> VoIP says it needs 90/90 to work.
> >>>>>
> >>>>> Currently, the DSL line comes into the Modem, out to the VoIP box,
> >>>>> and
> >>>>> then from the VoIP box into the notebook (Win 98se). Nothing has
> >>>>> wireless capabilities.
> >>>>>
> >>>>> When I hook up the DSL without the VoIP box, it works fine.  When I
> >>>>> put
> >>>>> the VoIP in the middle,  not only does it not work, but the DSL goes
> >>>>> away and when I remove the VoIP box, I have to argue with the DSL box
> >>>>>
> >>>>> for awhile to get it to work again.
> >>>>>
> >>>>>
> >>>> Solution.  Install in sequence below:
> >>>> DSL line -> DSL modem-> VoIP box - >Laptop
> >>>>
> >>>> power off all device (INCLUDING the dsl modem)
> >>>> power up DSL modem,  wait till all lights on it say it's ready and
> >>>> working,   power up Voip box make sure it becomes "ready",  then power
> >>>> up laptop, and all should be working correctly now.  Make sure the
> >>>> laptop is configured for DHCP. (almost all are).
> >>>>
> >>>> Reason:  DSL and cable modems detect the MAC address of the device
> >>>> directly plugged into them (whether it be a router, computer, appliance
> >>>> device, etc), and refuse to accept traffic from any other MAC address
> >>>> unless powercycled.    MAC addresses do NOT cross router boundaries
> >>>> (read up on the OSI model if you really want to know why). The Voip box
> >>>> is essentially a simple router device with added gee-whiz stuff inside
> >>>> (the voip crap).
> >>>>
> >>>>
> >>>>
> >>> Actually, I think he said that he never had the DSL router not be the
> first
> >>> device facing the DSL network.  If that is the case, then the MAC address
> >>>
> >> would
> >>
> >>> not change.
> >>>
> >>> I think that what is going on here is that you have a IP address
> >>> conflict/overlap the two networks.
> >>>
> >>> Let's take a standard out-of-the-box config.  Most routers plant the
> >>>
> >> internal
> >>
> >>> addresses on the 192.168.1.x network.  If both the DSL router and the
> VOIP
> >>> router are doing this, then you have the following kind of problem:
> >>>
> >>> DSL Line (Public IP's) -->  DSL Modem (192.168.1.0/32 or 192.168.1.1) -->
> >>>
> >> VOIP
> >>
> >>> Router (192.168.1.0/32 or 192.168.1.1) --> Internal network
> >>>
> >> (192.168.1.0/24).
> >>
> >>> Notice that both routers think that their address is 192.168.1.1.  When
> the
> >>>
> >> VOIP
> >>
> >>> router gets traffic that it does not know what to do with, it is supposed
> >>>
> >> to
> >>
> >>> hand it off to it's default gateway, which is the DSL modem.  But since
> it
> >>>
> >> has
> >>
> >>> the same IP address as the modem, it cannot find a route to it, and
> >>>
> >> therefore a
> >>
> >>> routing loop is created.
> >>>
> >>> Given this, most verizon routers can be setup in Bridged mode, thereby
> the
> >>>
> >> VOIP
> >>
> >>> router can be given the public IP address for its WAN port and the
> problem
> >>>
> >> is
> >>
> >>> likely solved.
> >>>
> >>> HTH,
> >>>
> >>> Kyle
> >>>
> >>>
> >>>
> >>>
> >>>> Dave J. Andruczyk
> >>>>
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