Hello!
At the beginning,I wanna say that this letter is a little long,but easy to
understand.
I wrote a MIB by imitating the NET-SNMP-TUTORIAL-MIB. And here is my MIB:
TEST-MIB DEFINITIONS ::= BEGIN
IMPORTS
netSnmpExamples FROM NET-SNMP-EXAMPLES-MIB
ifIndex FROM RFC1213-MIB
OBJECT-TYPE, Integer32,
IpAddress,Counter64,enterprises,
MODULE-IDENTITY FROM SNMPv2-SMI
DisplayString, MacAddress, TruthValue FROM SNMPv2-TC;
testMIB MODULE-IDENTITY
LAST-UPDATED "200205290000Z" -- 29 May 2002, midnight
ORGANIZATION "net-snmp"
CONTACT-INFO "postal: Wes Hardaker
P.O. Box 382
Davis CA 95617
email: [email protected]
"
DESCRIPTION "A simple mib for demonstration purposes.
"
::= { netSnmpExamples 4 }
aTestSetting OBJECT IDENTIFIER ::= { testMIB 1 }
--*******************************************************************************************
tSetting OBJECT IDENTIFIER ::= { aTestSetting 1 }
memoryUsage OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This attribute shall indicate the usage rate
of Memory."
::= { tSetting 1 }
cpuUsage OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This attribute shall indicate the usage rate
of CPU."
::= { tSetting 2 }
END
After finishing the SNMP Agent extension ,I took the operation:
#snmpget -v 2c -c public localhost TEST-MIB::memoryUsage.0
and succeeded;
when I inputed:
#snmpget -v 2c -c public localhost TEST-MIB::cpuUsage.0
it said:
No Such Instance currently exists at this OID.
then I modified my MIB as below(deleted the leaf memeryUsage ):
TEST-MIB DEFINITIONS ::= BEGIN
IMPORTS
netSnmpExamples FROM NET-SNMP-EXAMPLES-MIB
ifIndex FROM RFC1213-MIB
OBJECT-TYPE, Integer32,
IpAddress,Counter64,enterprises,
MODULE-IDENTITY FROM SNMPv2-SMI
DisplayString, MacAddress, TruthValue FROM SNMPv2-TC;
testMIB MODULE-IDENTITY
LAST-UPDATED "200205290000Z" -- 29 May 2002, midnight
ORGANIZATION "net-snmp"
CONTACT-INFO "postal: Wes Hardaker
P.O. Box 382
Davis CA 95617
email: [email protected]
"
DESCRIPTION "A simple mib for demonstration purposes.
"
::= { netSnmpExamples 4 }
aTestSetting OBJECT IDENTIFIER ::= { testMIB 1 }
--*******************************************************************************************
tSetting OBJECT IDENTIFIER ::= { aTestSetting 1 }
cpuUsage OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This attribute shall indicate the usage rate
of CPU."
::= { tSetting 1 }
END
then I inputed:
#snmpget -v 2c -c public localhost TEST-MIB::cpuUsage.0
it succeed.
so, why did it fail before I deleted the "memoryUsage"?
How to make the two leaves exist at the same MIB together?
THANKS!!!
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