Perhaps in OID .1.3.6.1.2.1.2.2.1.10.3 are updated only every 30 seconds, why?

-- Installed

ubuntu 7.10
root@ubnt:/home/alex# snmpd -v
NET-SNMP version:  5.3.1
Web:               http://www.net-snmp.org/
Email:             [email protected]

-- When requesting

root@ubnt:/home/alex# date;  snmpget -v 1 -c private localhost
.1.3.6.1.2.1.2.2.1.10.3

-- Get a response

Вск Ноя 18 19:58:40 EET 2007
IF-MIB::ifInOctets.3 = Counter32: 76695825

-- Repeat request

root@ubnt:/home/alex# date | snmpget -v 1 -c private localhost
.1.3.6.1.2.1.2.2.1.10.3
IF-MIB::ifInOctets.3 = Counter32: 76695825

-- Again repeat request

root@ubnt:/home/alex# date; snmpget -v 1 -c private localhost
.1.3.6.1.2.1.2.2.1.10.3
Вск Ноя 18 19:59:08 EET 2007
IF-MIB::ifInOctets.3 = Counter32: 76701041

-- ... Then the answer is not updated within 30 seconds
-- On proshedstvii 30 seconds

root@ubnt:/home/alex# date; snmpget -v 1 -c private localhost
.1.3.6.1.2.1.2.2.1.10.3
Вск Ноя 18 19:59:37 EET 2007
IF-MIB::ifInOctets.3 = Counter32: 76705537
root@ubnt:/home/alex# date; snmpget -v 1 -c private localhost
.1.3.6.1.2.1.2.2.1.10.3
Вск Ноя 18 19:59:38 EET 2007
IF-MIB::ifInOctets.3 = Counter32: 76705537
root@ubnt:/home/alex#

/etc/snmp/snmpd.conf

com2sec readwrite 127.0.0.1/32         private
group MyRWGroup v1         readwrite
group MyRWGroup v2c        readwrite
group MyRWGroup usm        readwrite
view all    included  .1                               80
view system included  .iso
access MyRWGroup ""      any       noauth    exact  all    all    none
syslocation Unknown (configure /etc/snmp/snmpd.local.conf)
syscontact Root <root@localhost>


-- Why are updated only every 30 seconds?

-- In version smnpd 5.1.2, the data are updated through 1 second

office:~# date; snmpget -v 1 -c private 169.254.0.1 .1.3.6.1.2.1.2.2.1.10.3
Вск Ноя 18 20:32:27 EET 2007
IF-MIB::ifInOctets.3 = Counter32: 398074730
office:~# date; snmpget -v 1 -c private 169.254.0.1 .1.3.6.1.2.1.2.2.1.10.3
Вск Ноя 18 20:32:28 EET 2007
IF-MIB::ifInOctets.3 = Counter32: 398075418
office:~# date; snmpget -v 1 -c private 169.254.0.1 .1.3.6.1.2.1.2.2.1.10.3
Вск Ноя 18 20:32:29 EET 2007
IF-MIB::ifInOctets.3 = Counter32: 398076106
office:~#


-- In man snmpd.conf found mention about versionClearCache, thinking that
might help, but ...

man snmpd.conf
...
              In either case, the exit statement and output will be cached
for
              30s after the initial query.  This cache can be flushed by a
SET
              request of the integer value 1  to  the  MIB  instance 
version‐
              ClearCache.0.
...

OID - 1.3.6.1.4.1.2021.100.10.0
ReadWrite
Set to 1 to clear the exec cache, if enabled

root@ubnt:/home/alex# snmpget -v 1 -c private localhost
.1.3.6.1.4.1.2021.100.10.0
UCD-SNMP-MIB::versionClearCache.0 = INTEGER: 0
root@ubnt:/home/alex# snmpset -v 1 -c private localhost
.1.3.6.1.4.1.2021.100.10.0 i 1
UCD-SNMP-MIB::versionClearCache.0 = INTEGER: 1
root@ubnt:/home/alex# snmpget -v 1 -c private localhost
.1.3.6.1.4.1.2021.100.10.0
UCD-SNMP-MIB::versionClearCache.0 = INTEGER: 0
root@ubnt:/home/alex#



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