Cisco Cisco Web Security Appliance S170 사용자 가이드

 shows what hardware derived objects are available for monitoring on what models. The 

number displayed is the number of instances of that object that can be monitored. For example, you can 
query the RPMs for 4 fans in the S350 appliance.

 lists the temperature and hardware conditions that cause a hardware trap to be sent:

Status change traps are sent when the status changes. Fan Failure and high temperature traps are sent 
every 5 seconds. The other traps are failure condition alarm traps — they are sent once when the state 
changes (healthy to failure). It is a good idea to poll for the hardware status tables and identify possible 
hardware failures before they become critical. Temperatures within 10 per cent of the critical value may 
be a cause for concern.

Note that failure condition alarm traps represent a critical failure of the individual component, but may 
not cause a total system failure. For example, a single fan or power supply can fail on a S650 appliance 
and the appliance will continue to operate. 

SNMP provides the ability to send traps, or notifications, to advise an administration application (an 
SNMP management console, typically) when one or more conditions have been met. Traps are network 
packets that contain data relating to a component of the system sending the trap. Traps are generated 
when a condition has been met on the SNMP agent (in this case, the IronPort appliance). After the 
condition has been met, the SNMP agent then forms an SNMP packet and sends it over port 162, the 
standard SNMP trap port. In the example below, the trap target of 

10.1.1.29

 and the Trap Community 

string are entered. This is the host running the SNMP management console software that will receive the 
SNMP traps from the appliance. 

You can configure SNMP traps (enable or disable specific traps) when you enable SNMP for an 
interface. To specify multiple trap targets: when prompted for the trap target, you may enter up to 10 
comma separated IP addresses.

1

2

1

2

6

1

4

2

6

6

1

4

2

4

6

1

4

2

6

6

1

4

2

6

6

47C 

0 RPMs 

Status Change

Status Change

Status Change