Cannot ping gateway with IP not ending in 1

  • Thread starter Thread starter Ammon
  • Start date Start date
A

Ammon

I have a personal router which does NAT and DHCP for me.
I'm tring to configure it to use a partial C-class subnet.
Specifically I want the router's LAN IP to be 10.1.4.32
and the subnet mask to be 255.255.255.224. When I set the
LAN IP so it does not end in .1 or I set the subnet mask
to other than 255.255.255.0 things go wierd. For
instance: I get "Destination specified is invalid." when
I ping the router. If I run "ipconfig -renew" I get "DHCP
Server unreachable". When I attempt to access the
router's html based admin at http://10.1.4.32 I
get "Cannot find server or DNS Error." Let me re-
emphasize: ALL of these things work correctly for any
subnet I choose as long as one of two conditions are met:
1. The subnet mask is "255.255.255.0" OR 2. the LAN IP
address of the router ends ".1" I do not believe it is
the router, because the router continues to work correctly
as an internet gateway and as a DHCP server while
experiencing this problem.
 
Possibly your router does not support subnet masks other than 255.255.255.0.
Assuming that it supports a subnet mask of 255.255.255.224, you will still
have problems because 10.1.4.32 is not a possible host address with that
mask.

Doug Sherman
MCSE Win2k/NT4.0, MCSA, MCP+I, MVP
 
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