RMS Compact II
Version 1.0.7 September 2016
Page 56
10 Appendix D: Networking Reference
This appendix has two sections:
Reference
and
Troubleshooting
.
Reference
This section discusses SNMP communities, IP addressing, subnet masking, routers
and gateways.
Communities
A community is a string of printable ASCII characters that identifies a user group
with the same access privileges. For example, a common community name is
“public”.
For security purposes, the SNMP agent validates requests before responding. The
agent can be configured so that only managers that are members of a community can
send requests and receive responses from a particular community.
This prevents unauthorized managers from viewing or changing the configuration of a
device.
IP Addresses
Every device on an internetwork must be assigned a unique IP (Internet Protocol)
address. An IP address is a 32-bit value comprised of a network ID and a host ID.
The network ID identifies the logical network to which a particular device belongs.
The host ID identifies the particular device within the logical network.
IP addresses distinguish devices on an internetwork from one another so that IP
packets are properly transmitted.
IP addresses appear in dotted decimal (rather than in binary) notation. Dotted decimal
notation divides the 32-bit value into four 8-bit groups, or octets, and separates each
octet with a period.
For example, 199.217.132.1 is an IP address in dotted decimal notation.
To accommodate networks of different sizes, the IP address has three divisions -
Classes A for large, B for medium, and C for small.
