Description: This persistent variable identifies the community string to be used when sending traps to any of the trap managers specified in 'trapMgrTable'. All traps sent by this SNMP Agent will include this community string. SNMP trap managers, can have the community string displayed in the trap log. In addition to IP address, network administrators can use the community string to help identify the Agent that generated the trap. This community string can contain a maximum of 32 characters. The minimum string is a string compose of a single character. If this variable is set to a empty or null string, then the Agent will ignore the null string, and set this variable to the default value. Input characters will be parsed for printable ASCII characters, any characters outside of this set will be removed without an error condition. Special characters such as punctuation, numbers, braces, square boxes, underbars, etc. are allowed if the character has a value between 33 ( '!') and 126 ( '~') decimal inclusive. Blanks are considered invalid. The default value is the string 'NMU-', where represents the 8 character serial number of the NMU.