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Simple Network Management Protocol (SNMP)
Defining the Community String
Each SNMP message contains a community string in its header. The receiving SNMP agent tries
to match the message's string with an existing community string list. If there is no match, the SNMP
agent discards the message without responding to the sender.
The keyword community defines an SNMP community name from which the Model 5390 server
responds to requests. At system startup, the SNMP agent requires at least one community string to
be defined in the configuration file. If the file does not contain a community string, the Model 5390
server defaults to the community name public (unless SNMP is disabled in the Model 5390 parameter
disabled_modules). There is no notion of read-only or read-write communities.
You can specify up to four SNMP community names in the gateway section of the configuration
file, but each community requires a separate line. The Model 5390 server adds these communities
to the SNMP agent's community table. The syntax is:
snmp community name
Defining Trap Hosts and Traps
The Model 5390 server employs two methods for defining the host addresses it uses when generating
SNMP trap messages.
• The first method defines up to ten static trap hosts in the configuration file using the SNMP
trap host syntax.
• The second method loads the trap hosts (if any) from the configuration file into the Trap Host
Table (that is, the anxTrapHostTable objects in the proprietary MIB). You can modify this
table by adding or deleting trap hosts. However, the changes you make directly through the
table will be lost when the Model 5390 server reboots. If you want your changes to be
permanent, you must use the Model 5390 configuration file.
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