Alpha Technologies Cordex Controller Ver.2.0 - Manual (Page 107)

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10.3 Communication Configuration
SNMP Communication Configuration is only accessible via the web interface.
Select Configure SNMP from CXC web interface Communications menu as shown below.
10.3.1 SNMP Multiple Community Names
This menu item enables the User to configure multiple CXC SNMP community settings for get (read) and set
(write). This is to permit multiple SNMP NMS programs, with different community strings, to connect to the CXC.
NOTE: Before this feature, the CXC had one set of community strings, which meant that any NMS that tried to connect to
the CXC must be a match.
Now, a company with multiple NMS's, each in a different region, with a different community string, will find it
easier to connect to the CXC from various places. See Figure below:
Figure 116–SNMP Community Name web interface window
10.3.2 SNMP Trap Recovery
This feature enables the CXC SNMP agent to hold traps in a buffer during a network block out period. The master
network management station (NMS) must be monitoring (polling) the SNMP agent in order for the agent to resend
the traps after the network connection has again been established.
NOTE: The following items along with any item from the Argus MIB will reset the poll timer:
 sysDescr.0
 sysContact.0
 sysName.0
 sysLocation.0
An ICMP 7 echo request packet or “ping” is used to determine whether a trap may be received (recovered) by the
SNMP client. Once successful, the trap is sent.
The time-out before failure of ping has been increased from two seconds to eight.
NOTE: Master NMS destination can be selected from Master SNMP Destination pull-down menu (see next section Event
Notification).
7 Internet control message protocol