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Monitoring Switch Health
Configuring Resource Thresholds
Health Monitoring software monitors threshold levels for the switch's consumable resources—bandwidth,
RAM memory, and CPU capacity. When a threshold is exceeded, the Health Monitoring feature sends a
trap to the Network Management Station (NMS). A trap is an alarm alerting the user to specific network
events. In the case of health-related traps, a specific indication is given to determine which threshold has
been crossed.
Note. When a resource falls back below the configured threshold, an addition trap is sent to the user. This
indicates that the resource is no longer operating beyond its configured threshold limit.
The
health threshold
traffic (TX/RX), memory usage and CPU usage.
To configure thresholds for these resources, enter the health threshold command, followed by the input
traffic, output/input traffic, memory usage, or CPU usage where:
rx
txrx
memory
cpu
For example, to specify a CPU usage threshold of 85 percent, enter the following command:
-> health threshold cpu 85
For more information on the health threshold command, refer to
Commands,"
in the OmniSwitch CLI Reference Guide.
Note. When you specify a new value for a threshold limit, the value is automatically applied across all
levels of the switch (switch, module, and port). You cannot select differing values for each level.
page 26-42
command is used to configure threshold limits for input traffic (RX), output/input
Specifies an input traffic (RX) threshold, in percentage. This value
defines the maximum percentage of total bandwidth allowed for incom-
ing traffic only. The total bandwidth is the Ethernet port capacity of all
NI modules currently operating in the switch, in Mbps. For example, a
chassis with 48 100Base-T Ethernet ports installed has a total band-
width of 4800 Mbps. Since the default RX threshold is 80 percent, the
threshold is exceeded if the input traffic on all ports reaches 3840 Mbps
or higher.
Specifies a value for the output/input traffic (TX/RX) threshold. This
value defines the maximum percentage of total bandwidth allowed for
all incoming and outgoing traffic. As with the RX threshold described
above, the total bandwidth is defined as the Ethernet port capacity for
all NI modules currently operating in the switch, in Mbps. The default
TX/RX threshold is 80 percent.
Specifies a value for the memory usage threshold. Memory usage
refers to the total amount of RAM memory currently used by switch
applications. The default memory usage threshold is 80 percent.
Specifies a value for the CPU usage threshold. CPU usage refers to the
total amount of CPU processor capacity currently used by switch appli-
cations. The default CPU usage threshold is 80 percent.
OmniSwitch AOS Release 7 Network Configuration Guide
Diagnosing Switch Problems
Chapter 36, "Health Monitoring
March 2011
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