HP Traffic Director Server Appliances sa7200/sa7220 and 8200/sa8220 - User Guide

C H A P T E R 7 HP Traffic Director Server Appliances User Guide
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Trap thresholds for server connection count can be configured so that
a trap is sent if the connection count reaches a specified value. The
serverConnCntAlert and serverConnCntNormal traps and
applicable thresholds work similarly for server response time.
Trap thresholds for server connections can be configured such that if
the connection/second rate reaches a given value, a trap is sent. The
serverCpsAlert and serverCpsNormal trap and applicable
thresholds work similarly for server response time.
Layer 4 Service (VIP, PORT)
The performance of each configured Layer 4 service (VIP, PORT)
presented to clients is monitored. Performance data is stored in the
serviceTcpTable. This data is computed by aggregating the
values in
serverTcpTable that apply to the (VIP, PORT). That is,
all server TCP connections used for load balancing a (VIP, PORT)
are aggregated to derive performance data for that (VIP, PORT) in
serviceTcpTable. Per (VIP, PORT) pair, the following data is
available:
• State, up or down (
serviceState)
• Length of time the service has been up (
serviceUpTime)
• Response time (
serviceRspTm)
• Number of established TCP connections (
serviceConnCnt)
• TCP connections established per second (
serviceCps)
Trap thresholds are available in the MIB for
serviceRspTm,
serviceConnCnt and serviceCps. Different threshold settings
can be configured for each service in
serviceTcpTable.
Trap thresholds for service response time can be configured such that
if the service response time reaches a specified value, a trap is sent.
When
serviceRspTm reaches serviceRspTmHiWater, a
serviceRspTmAlert trap is sent. While in alert, if
serviceRspTm dips to serviceRspTmLoWater, a
serviceRspTmNormal trap is sent. High- and low-water
thresholds provide hysteresis and prevent spurious trap generation. If
the high-water threshold is set to 0, no traps are sent.
Trap thresholds for service connection count can be configured so
that a trap is sent if the connection count reaches a value. The traps,
serviceConnCntAlert and serviceConnCntNormal and
applicable thresholds work similarly for service response time.