Problems with Net-SNMP on Windows

Hi,

 

I'm a newbie to Net-SNMP, so I'd appreciate the information anyone would
be kind to provide.

I was looking for a cross-platform product which will allow me to
monitor servers and send SNMP traps to a central monitoring system.

 

I'm unable to use some basic functions of Net-SNMP on Windows servers.

I've installed the Net-SNMP 5.4.1 with Windows extension dll support.

I'm trying to set up my snmpd.conf configuration file with "exec" and
"monitor" directives, but none of them work. I also tried using
"defaultMonitors yes" but still I didn't get nothing. 

I'm sending the traps to the local instance of snmptrapd which is
configured to ignore all Authorizations with "disableAutorization yes"
(for testing purposes).

When I try to retrieve the results of the external scripts I run, I get
nothing:

C:\> snmpwalk -v 2c -c public localhost .1.3.6.1.4.1.2021.8

UCD-SNMP-MIB::extTable = No Such Object available on this agent at this
OID 

C:\> 

Here is what I have in the snmpd.conf:

<snmpd.conf>

########################################################################
###

#

# snmpd.conf

#

#   - created by the snmpconf configuration program

#

########################################################################
###

# SECTION: System Information Setup

#

#   This section defines some of the information reported in

#   the "system" mib group in the mibII tree.

 

# syslocation: The [typically physical] location of the system.

#   Note that setting this value here means that when trying to

#   perform an snmp SET operation to the sysLocation.0 variable will
make

#   the agent return the "notWritable" error code.  IE, including

#   this token in the snmpd.conf file will disable write access to

#   the variable.

#   arguments:  location_string

 

syslocation  "Test Win System"

 

# syscontact: The contact information for the administrator

#   Note that setting this value here means that when trying to

#   perform an snmp SET operation to the sysContact.0 variable will make

#   the agent return the "notWritable" error code.  IE, including

#   this token in the snmpd.conf file will disable write access to

#   the variable.

#   arguments:  contact_string

 

syscontact  [email protected]

 

########################################################################
###

# SECTION: Access Control Setup

#

#   This section defines who is allowed to talk to your running

#   snmp agent.

 

# First, map the community name "public" into a "security name"

#       sec.name        source     community

com2sec notConfigUser   default    public

 

# Second, map the security name into a group name:

#       groupName       securityModel   securityName

group   notConfigGroup  v1              notConfigUser

group   notConfigGroup  v2c             notConfigUser

 

# Third, create a view for us to let the group have rights to:

#       name            incl/excl     subtree         mask(optional)

view    systemview      included      .1

 

# Finally, grant the group read-only access to the systemview view.

#       group           context sec.model sec.level prefix read
write  notif

access  notConfigGroup  ""      any       noauth    exact  systemview
none  none

 

########################################################################
###

# SECTION: Trap Destinations

#

#   Here we define who the agent will send traps to and when.

 

# trapsink: A SNMPv1 trap receiver

#   arguments: host [community] [portnum]

 

trapsink localhost

 

# trap2sink: A SNMPv2c trap receiver

#   arguments: host [community] [portnum]

 

trap2sink localhost

 

# informsink: A SNMPv2c inform (acknowledged trap) receiver

#   arguments: host [community] [portnum]

 

informsink localhost public

 

# trapcommunity: Default trap sink community to use

#   arguments: community-string

 

trapcommunity public 

 

# authtrapenable: Should we send traps when authentication failures
occur

#   arguments: 1 | 2   (1 = yes, 2 = no)

 

authtrapenable 2

 

# Set up the credentials to retrieve monitored values

 

createUser     internal MD5 "internal query user"

iquerySecName  internal

rouser         internal

 

# Activate the standard monitoring entries

 

defaultMonitors         yes

linkUpDownNotifications yes

 

########################################################################
###

# SECTION: Monitor Various Aspects of the Running Host

#

#   The following check up on various aspects of a host.

 

# disk: Check for disk space usage of a partition.

#   The agent can check the amount of available disk space, and make

#   sure it is above a set limit.  

#   

#    disk PATH [MIN=100000]

#   

#    PATH:  mount path to the disk in question.

#    MIN:   Disks with space below this value will have the Mib's
errorFlag set.

#           Can be a raw byte value or a percentage followed by the %

#           symbol.  Default value = 100000.

#   

#   The results are reported in the dskTable section of the UCD-SNMP-MIB
tree

 

includeAllDisks 75%  

 

exec usrDiskCheck "C:\SNMP\Tests\disk_check.bat"

monitor -o extOutput usrDiskCheck "extResult" != 0

</snmpd.conf>

 

Like I mentioned before, none of the configuration seems to send traps
to localhost's snmptrapd.

I used the same configuration on a Linux server, AIX server and a
Solaris server (apart from the "exec" directive which is different), and
it did exactly what I was expecting it to.

 

I went through the entire FAQ, README's and every other documentation I
could find on the website. From what I saw there should be no difference
between platforms in this version, but what I see is different.

Can anyone shed some light on this issue?

 

 

Yair Zaretski

System Linux/Unix Consultant 

 

 

 

GlassHouse Technologies

3 Hatidhar st. Raanana

Israel 43665

T: +972 (9) 7766444 

F: +972 (9) 7421191

M: +972 (52) 4826093

[email protected]

www.glasshouse.com <http://www.glasshouse.com/>

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