snmpdelta -
Monitor deltas of integer valued SNMP variables
# 注释 ：snmpdelta 命令用于监测整数型的
SNMP 对象的值的增量
SYNOPSIS
snmpdelta [ common options ] [-Cf] [ -Ct ] [ -Cs ] [ -CS ] [ -Cm ] [ -CF
configfile ] [ -Cl ] [ -Cp period ] [ -CP Peaks ] [ -Ck ] [ -CT ]
AGENT OID [ OID ... ]
# 注释 ：snmpdelta
命令的格式
DESCRIPTION
snmpdelta will monitor the specified integer valued OIDs, and report
changes over time.
AGENT identifies a target SNMP
agent, which is instrumented to monitor the gievn objects. At its
simplest, the AGENT specification will con- sist of a hostname or an
IPv4 address. In this situation, the command will attempt
communication with the agent, using UDP/IPv4 to port 161 of the given
target host. See snmpcmd(1) for a full list of the possi- ble formats
for AGENT.
OID is an object identifier which
uniquely identifies the object type within a MIB. Multiple OIDs can be
specified on a single snmpdelta com- mand.
OPTIONS COMMON OPTIONS Please see snmpcmd(1) for a list of
possible values for COMMON OPTIONS as well as their
descriptions.
-Cf
Don't fix errors and retry the
request. Without this option, if multiple oids have been
specified for a single request and if the request for one or more of
the oids fails, snmpdelta will retry the request so that data
for oids apart from the ones that failed will still be returned.
Specifying -Cf tells snmpdelta not to retry a request, even if
there are multiple oids specified.
-Ct
Flag will determine time interval
from the monitored entity.
# 注释 ：-Ct 表示由
snmp 决定监测的时间间隔
-Cs
Flag will display a
timestamp.
# 注释 ：-Cs
表示显示时间戳
-CS
Generates a "sum count" in
addition to the individual instance counts. The "sum count" is
the total of all the individual deltas for each time
period.
# 注释 ：-CS
表示为每个单独的实例生成一个统计和。
-Cm
Prints the max value ever
attained.
# 注释 ：-Cm
表示打印监测期间所捕捉到的最大值
-CF configfile
Tells
snmpdelta to read it's configuration from the specified file.
This options allows the input to be set up in advance rather than
having to be specified on the command line.
# 注释 ：-CF
告诉 snmpdelta 从指定的地方读取配置文件
-Cl
Tells snmpdelta to write it's
configuration to files whose names correspond to the MIB
instances monitored. For example, snmpdelta -Cl localhost
ifInOctets.1 will create a file "local-
host-ifInOctets.1".
# 注释 ：-Cl 告诉
snmpdelta 把配置写入以监测对象命令的文件中，便于以后重复引用
-Cp
Specifies the number of
seconds between polling periods. Polling constitutes sending a
request to the agent. The default polling period is one
second.
# 注释 ：-Cp
设置轮询的时间间隔，单位是秒。默认是1秒
-CP
peaks Specifies the reporting period in number of polling
periods. If this option is specified, snmpdelta polls the agent
peaks number of times before reporting the results. The
result reported includes the average value over the reporting
period. In addition, the highest polled value within the
reporting period is shown.
# 注释 ：-CP
设置轮询的次数
# 注意 ：如果指定了-Cp 和 -CP
，则每行输出的时间间隔为 Ｃp * CP = N sec
-Ck
When the polling period (-Cp) is an
increment of 60 seconds and the timestamp is displayed in the
output (-Cs), then the default display shows the timestamp in the
format hh:mm mm/dd. This option causes the timestamp format to be
hh:mm:ss mm/dd.
# 注释 ：-Ck 表示按
hh:mm:ss mm/dd 的格式显示时间
#
如果要显示应该选择这个，如果要通过程序处理，还是默认的好
-CT
Makes snmpdelta print its output in
tabular form.
# 注释 ：-CT
表示以表格的方式输出结果
-Cv
vars/pkt Specifies the maximum number of oids allowed to be
packaged in a single PDU. Multiple PDUs can be created in a single
request. The default value of variables per packet is 60. This
option is useful if a request response results in an error becaues
the packet is too big.
