Contemporary Control Systems Compact Managed Switches Software Manual for Web Browser - Manual (Page 54)

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4.5.1 Configure System Information
In this panel, users can set three of the MIBs listed in Section 5.2.1.1:
System Name (1.3.6.1.2.1.1.5.0)
System Location (1.3.6.1.2.1.1.6.0)
System Contact (1.3.6.1.2.1.1.4.0)
4.5.2 Configure SNMP Community
Managed devices are grouped into “communities” wherein every device has the same
”community string” (aka “community name”) to be able to communicate via SNMP. This
string assures authorized access to SNMP. Community strings can provide two types
of access, read-only and read-write. Read-only access allows only get and get-next
commands. Read-write access allows get, get-next and set commands.
Up to four SNMP community names can be defined — each specifying either read-only
access or read/write access. Before an access can be used, it must be set to Valid.
Each community has three parameters to be configured:
Community String is the name (up to 10 characters) created by the user. It functions as
a password to be used by any SNMP management software which accesses the switch.
Access is chosen by the user to be either “Read Only” or ”Read Write”.
Status
is chosen to be either “Valid” (string enabled) or “Invalid” (string disabled).
Figure 43 shows that two community strings are, by default, pre-defined and valid :
“public” (set for read-only access) and “private” (set for read-write access). (Several
commonly-available SNMP manager applications use public and private as default strings.)
4.5.3 Configure SNMP Trap Receivers
An SNMP Trap is a message that is transmitted when a trap event occurs. The menu in
Figure 43 allows up to four trap receiver IP addresses to be defined and each must be
marked Valid for it to be used. Each valid trap receiver will receive a trap message
upon a trap event occurring. The switch supports traps for:
link-up
link-down
authentication failure
cold start
warm start
The example of Figure 43 defines an IP Address for only one trap receiver — which will
function because its status parameter has been set to Valid.
NOTE:
For more information on SNMP support within the switch, see Appendix 5.2.
(Figure 43, upper panel)
(Figure 43, middle panel)
(Figure 43, lower panel)