Default Gateways; Mac Addresses; Figure A-9 Router As Default Gateway - Comtech EF Data Vipersat CDM-570 User Manual

I P A d d r e s s in g
Each of the four subnets can, in turn, support 64 members.
The example subnet used above yielded 4 subnets, but you can use a different
mask to meet the specific requirements of your network.

Default Gateways

A default gateway is a network device, usually a router, that is responsible for
routing data packets out of the local network segment.
The address of the gateway is entered into the devices on the local network,
providing them with a location to send data that is destined for another segment.
Figure A-9
Router as Default Gateway

MAC Addresses

A MAC address is a physical hardware address that gets assigned to the inter-
face of a networking device. This address is typically created and burned into a
device's ROM during the manufacturing process. MAC addresses are unique to
the device and are not typically user-assignable.
The MAC address is used for Layer 2 (Data Link) communications between
networking devices, and consists of 12 alpha-numeric characters as shown in
the example below:
Example: 00-3f-bf-00-01-45
A p p e n d i x N e t w o r k A d d r e s s i n g
A - A-11