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Appendix
This appendix has three sections: Reference, Glossary, and
Troubleshooting.
Reference
This section discusses Communities, IP Addresses, Sub net
masking, and routers/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
trap 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.