HP Traffic Director sa7220 User Manual
Page 250
C H A P T E R 7
HP Traffic Director Server Appliances User Guide
238
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.