Moxa Technologies IA5150 - Manual (Page 60)

NPort IA5150/5250 Series User’s Manual Web Console Configuration
5-35
DCD changed
A change in the DCD (Data Carrier Detect) signal indicates that the modem connection status has
changed. For example, If the DCD signal changes to low, it means that the connection line is down.
When the DCD signal changes to low, NPort IA will immediately send a warning. NPort IA
supports different approaches to warn engineers automatically, such as by email, SNMP trap, and
relay output (which closes the circuit). Users can connect to Monitor Æ Relay Output from the
web console to check what event caused the warning. You can cancel the relay output status by
changing the DCD signal changing to high, or by selecting “acknowledge event” from the web
console or Telnet.
When the Relay Output is issuing a warning, the Ready LED will flash in red until the warning
event ceases.
DSR changed
A change in the DSR (Data Carrier Detect) signal indicates that the data communication
equipment is powered off. For example, If the DSR signal changes to low, it means that the data
communication equipment is powered down. When the DSR signal changes to low, NPort IA will
immediately send a warning. NPort IA supports different approaches to warn engineers
automatically, such as by email, SNMP trap, and relay output (which closes the circuit). Users can
connect to Monitor Æ Relay Output from the web console to check what event caused the warning.
You can cancel the relay output status by changing the DSR signal changing to high, or by
selecting “acknowledge event” from the web console or Telnet.
When the Relay Output is issuing a warning, the Ready LED will flash in red until the warning
event ceases.
Mail
Setting Factory Default Necessity
Enable, Disable Disable Optional
This feature helps the administrator manage how the NPort IA5150/5250 sends e-mail to
pre-defined e-mail boxes when the enabled events—such as Cold start, Warm start, Authentication
failure, etc.—occur. To configure this feature, click on the Event Type Mail checkbox.
Trap
Setting Factory Default Necessity
Enable, Disable Disable Optional
This feature helps the administrator manage how the NPort IA5150/5250 sends SNMP Trap to a
pre-defined SNMP Trap server when the enabled events—such as Cold start, Warm start,
Authentication failure, etc.—occur. To configure this feature, click on the Event Type Trap
checkbox.
ATTENTION
SNMP can detect when DCD or DSR changes from “–” to “+” and when DCD or DSR changes
from “+” to “–” but SNMP cannot detect whether it was the DCD signal that changed or the DSR
signal that changed. For this reason, a change from “–” to “+” (of either DCD or DSR) is
indicated by “link up” and a change from “+” to “–” (of either DCD or DSR) is indicated by
“link down.”