Re: Default Gateways

[Richard Letts <[e-mail]>]

[e-mail] wrote....
> 
>      Many of our customers use an intermix of class c subnet structures to 
>      help manage their workgroups. With only 255 host available in each 
>      class c subnet, multiple subnets are obviously needed. Because the 
>      network is flat they need to have every DHCP client use itself as a 
>      default gateway so that they can talk to other clients. 
>      
>      In summary, we have customers using flat networks, different subnets, 
>      no routers, and are experiencing communication problems because DHCP 
>      (under NT) doesn't support default gateways. 
>      
what happens if you specify a subnetmask that is actually a supernet mask?
eg 0.0.0.0 or 128.0.0.0

unfortunately the TCPIP stack I'm using on my PC does not permit me to set the
subnet mask to be larger than the class-B network mask for the 146.87 network,
nor larger than a class-c subnet mask for 192.65.172.

if you can tell the IP stack that it is connected to a supernet network with
no routers on it you can rely on proxy-arp or BUS-arp to bind the ip address
to a lan address.

[as an experiment I can set the netmask of our solaris systems to 128.0.0.0
and delete all the routes out of the routing table, and it still communicates
on our routed environment]

Richard Letts  
-------------------------------------------------------------------------------
Network Manager                               mail:    [e-mail]  
University of Salford                         phone:     [phone]
Great Britain                                 fax:       [phone]