NS3000/iX NMMGR Screens Reference Manual - Edition 9 (36922-90040)
Chapter 6 133
Point-to-Point (Router) Network Interface Configuration Screens
Neighbor Gateway Reachable Networks
If the remote network is subnetted, you can restrict
communication of this node to particular subnets by
entering the decimal equivalent of those subnets and
including the IP Mask in the IP mask field.
To allow this node to communicate with other subnets
on the local network, enter the decimal equivalent of
the subnet in the IP network address field and enter
the subnet mask in the IP mask field. If you do not
enter a subnet mask one of the following occurs:
• If the IP address is the same as the node you are
configuring, the IP mask configured in the IP
Protocol Configuration screen (Figure 6-5) is used.
• If the IP address is different from the node you are
configuring, NMMGR assumes no subnets.
Related screen:
• NETXPORT.NI.NIname.INTERNET
This path name corresponds to the Neighbor
Gateways screen. A Neighbor Gateway Reachable
Networks screen must be configured for each
gateway configured in the Neighbor Gateways
screen.
IP mask
The IP mask masks a portion of the IP address for
subnets. The subnet is specified in the same format as
an IP address; that is, the 32-bit mask is grouped in
octets expressed as decimal integers and delimited by a
“.” or a space. For example, a mask for a class A address
with the subnet field being the first 8 bits of the node
portion would be expressed as 255 255.000.000. The
default is no IP mask.
Configured reachable networks hops
Enter the internet hop count to the reachable network
whose IP address is configured to the left of the hops
field. (The internet hop count is the number of full
internet gateways that will be used to route a message
to the destination network. If two partner gateway
halves are used as part of the internet route, they are
counted as one hop.)
Hop count is used internally to determine which
neighbor gateway (if more than one exists) is on the
shortest path to the remote network. If more than one
gateway can reach a given remote network, and the
number of hops to the remote network is equal for each