Gateways - Tripp Lite SNMP Solo MT-SE-37/02 Owner's Manual

SNMP Solo
own subnetwork, set the subnet mask to 255.255.255.0 for the
devices on that subnetwork.
Subnet Mask
0.0.0.0
255.0.0.0
255.255.0.0
255.255.255.0

Gateways

Gateway, also referred to as a router, is any computer with two
or more network adapters connecting to different physical
networks. Gateways allow for transmission of IP packets among
networks on an internetwork.
32 Appendix
Routing and Filtering
IP packets are transmitted to all devices.
IP packets are only transmitted to
devices whose IP address's first octet
matches the sender's IP address's first
octet.
IP packets are only transmitted to
devices whose IP address's first two
octets match the sender's IP address's
first two octets.
IP packets are only transmitted to
devices whose IP address's first three
octets match the sender's IP address's
first three octets.