Re: How to configure disman snmpv3 inform

Hi,

Based on the manpage http://www.net-snmp.org/docs/man/snmpd.conf.html I
added the following line to my snmpd.conf file

trapsess -Ci -v 3 -u my_mon_user -a MD5 -A pass2 -x DES -X pass1 -l
authPriv udp:localhost:162 which resulted in that I managed to get a
coldStart
inform from my snmpd. After running sudo ifconfig eth0 down I managed to
receive a linkdown. So that solved it.

/Måns

2013/2/13 Måns Zigher <[email protected]>

> Hi,
>
> I have scanned the mailing archive and read all the manpages regarding
> net-snmp without any success on finding any information regarding how to
> configure informs for snmpv3.
> I would like to create a inform for snmpv3 on the following events linkup,
> linkdown, coldstart and warmstart. From the manpages I have managed to
> configure the following
>
>
> ###############################################################################
> #
> #  AGENT BEHAVIOUR
> #
> #  Listen for connections from the local system only
> agentAddress  udp:127.0.0.1:161
>
> ###########################################################################
> # SECTION: Access Control Setup
> #
> #   This section defines who is allowed to talk to your running
> #   snmp agent.
>
> # rwuser: a SNMPv3 read-write user
> #   arguments:  user [noauth|auth|priv] [restriction_oid]
>
> rwuser  my_userrw
>
> # rouser: a SNMPv3 read-only user
> #   arguments:  user [noauth|auth|priv] [restriction_oid]
>
> rouser  my_userro
>
> # rouser: a SNMPv3 read-only user
> #   arguments:  user [noauth|auth|priv] [restriction_oid]
>
> rouser  my_mon_user
>
>
> ###############################################################################
> #
> #  ACTIVE MONITORING
> #
> #
> #  Event MIB - automatically generate alerts
> #
> iquerySecName   my_mon_user
> agentSecName   my_mon_user
>
> # generate traps on linkUp/Down
> linkUpDownNotifications  yes
>
>
> ###############################################################################
>
> I have created all three users my_userrw, my_userro and my_mon_user and
> all these users can run snmpwalk or snmpget so I
> guess that I have managed to set them up correctly.
>
> When it comes to my snmptrapd I have the following configuration file
> snmptrapd.conf
>
> createUser my_mon_user MD5 pass1 DES pass2
> snmpTrapdAddr udp:127.0.0.1:162
> authuser log my_mon_user
>
> I have verified snmptrapd by running the following command
>
> ./snmpinform -v 3 -u my_mon_user -a MD5 -A pass1 -x DES -X pass2 -l
> authPriv localhost 42 linkDown.0
>
> which will result in the following output from the snmptrapd
>
> 2013-02-13 10:50:29 localhost [UDP: [127.0.0.1]:39612->[127.0.0.1]:162]:
> DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (42) 0:00:00.42 SNMPv2-MIB::snmpTrapOID.0
> = OID: IF-MIB::linkDown.0
>
> But I never get any traps from the snmpd. I try to trigger the linkDown by
> running sudo ifconfig eth0 down but without any success.
> What is it that I am missing?
>
> /Mans
>
>

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