Router Problem

[Rick Stevens]

brad.mugleston at comcast.net wrote:
> On Mon, 4 Apr 2005, Rick Stevens wrote:
> 
> 
>>brad.mugleston at comcast.net wrote:
>>
>>>On Sat, 2 Apr 2005, Ted Potter wrote:
>>>
>>>
>>>
>>>>just guessing but you have two routers both using the same ip block
>>>>space. So how does one router route to the other router. Wow, can't
>>>>believe I just typed that.
>>>>guess two: turn the wireless router in to a wireless access point.
>>>>
>>>>trust me when I say I am guessing. Someone with network experience
>>>>should be able to squash my little guesses like bugs.
>>>>
>>>>hth
>>>>
>>>
>>>
>>>Ted,
>>>
>>>Thanks for the guesses 8^)
>>>
>>>Let me see if I understand them.
>>>
>>>G1 - As they are both 192.168.1. I can go from one to the other
>>>but not back out.  I believe your saying I should change one to
>>>192.168.2. (the wireless as it's only got one machine connected
>>>so it should be eaiser).  Will that give me any problems getting
>>>in and out of other computers?
>>
>>Wait...both the Linksys and the Motorola are use the same IP?  Bad!
>>You're only allowed one machine per IP per network segment.
>>
>>It's possible you've got conflicting routes.  It'd help if you were to
>>show us the config for both the Linksys and Motorola devices, as well
>>as the routing table ("netstat -rn") of a machine having problems.
>>
>>
>>>G2 -not sure what a wireless access point is.....
>>
>>Any radio that connects wireless machines to wired networks is an access
>>point.  While the term is generally reserved for devices that do only
>>that, an AP can do other things as well.  For example, your wireless
>>routers is also an access point--since it connects wireless devices to
>>your wired network.
>>----------------------------------------------------------------------
>>- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
> 
> 
> OK, I think I'm confusing things
> 
> Linksys - assigned IP 192.168.1.1
> Motorola assigned IP 192.168.1.2

Ah.  Ok.

> Linksys does DHCP for all other addresses.

You're sure?  You've verified the Motorola's DHCP (if it has it) is
turned off?  As Regan once said, "Trust, but verify!"

> Wireless computer not available right now but it's assigned IP
> was 192.168.1.107 the other day.  I could ping both 192.168.1.2
> and 192.168.1.1 but nothing else on the home network (i.e. 192.168.1.100
> my son's computer).  My Linux machine has a fixed IP of 192.168.1.50 so
> others can get their mail.  I could not ping that either from
> 192.168.1.2.
> 
> I'll get the wireless machine and try it out tomorrow.

Ok.  When you get it back up, check the following:

"ifconfig -a" and check the IP and the netmask.  Your netmask should
probably be 255.255.255.0, but 255.255.0.0 will also work (the non-
routable network 192.168 is a /16).

"netstat -rn" and check the default gateway (the one with "0.0.0.0"
under the "destination" column).

Verify that the other machines don't have firewalls that block ICMP
(ping).

> 
> thanks,
> 
> Brad
> 
> 
> 
> 
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-- 
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- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-         "OK, so you're a Ph.D. Just don't TOUCH anything!"         -
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