Waters Network Systems GSM2108 Operating Manual page 53

If they both have the same community name, they can talk each other.
Community name is user-definable with a maximum length of 15 characters and is case
sensitive. No blank spaces are permitted in the community name string. Any printable character
is allowed.
The community name for each function works independently. Each function has its own
community name. The community name for GET only works for the GET function and can't be
applied to other function such as SET and Trap.
Default SNMP function: Enable
Default community name for GET: Public
Default community name for SET: Private
Default community name for Trap: Public
Default Set function: Enable
Default trap host IP address: 0.0.0.0
Default port number: 162
Trap:
There are six supported trap hosts. Each has its own community name and IP address and is
user-definable. To create a trap host means to create a trap manager by assigning an IP
address to the host the trap message. In other words, the trap host is a network management
unit with SNMP manager receiving the trap message from a switch with SNMP agent issuing
the trap message. Six trap hosts can prevent the important trap message from being lost.
For each public trap, the switch supports the trap event Cold Start, Warm Start, Link Down, Link
Up and Authentication Failure Trap. They can be enabled or disabled individually. When
enabled, the corresponded trap will actively send a trap message to the trap host when a trap
occurs. If all public traps are disabled, no public trap message will be sent. The Enterprise (no.
6) trap is classified as private trap, which is listed in the Trap Alarm Configuration function folder.
Default for all public traps: Enable.
Figure 5.24 - Community and trap host setting
Waters Network Systems User's Manual Page 53
GSM-2108/GSM-1008SFP