HP-UX LAN Administrator's Guide (Feburary 2007)

Network AddressingDRAFT COPY
Configuring Gateways on Supernets
Chapter 7132
Configuring Gateways on Supernets
If all the hosts and gateways in your networks support variable-length subnet masks, then
the gateway configuration of the supernet will be the same as in gateway configuration for
variable-length subnets.
In Figure 7-18, if you use explicit routing, you may configure the following supernet route on
Host A to enable Host A to communicate with any host on supernet 192.6.12
ROUTE_DESTINATION[0]=”net 192.6.12”
ROUTE_MASK[0]=”255.255.254.0”
ROUTE_GATEWAY[0]=”192.6.14.2”
ROUTE_COUNT[0]=”1”
If you use dynamic routing, then the default gateway, Gd, on network 192.6.14 must have the
above supernet route configured.
If some of the hosts and gateways in your networks do not support variable-length subnet
masks, then you must configure a separate network route for each of the networks in the
supernet.
If you use explicit routing and Host A does not support supernetting, then you must configure
the following two net routes on Host A.
ROUTE_DESTINATION[0]=”net 192.6.12”
ROUTE_MASK[0]=”255.255.255.0”
ROUTE_GATEWAY[0]=”192.6.14.2”
ROUTE_COUNT[0]=”1”
ROUTE_DESTINATION[1]=”net 192.6.13”
ROUTE_MASK[1]=”255.255.255.0”
ROUTE_GATEWAY[1]=”192.6.14.2”
ROUTE_COUNT[1]=”1”
If you use dynamic routing, then the default gateway, Gd, on network 192.6.14 must have the
above net routes configured.