BSNMP service not starting up

[mshundal]

Hi,

snmpd keeps crashing on startup; caught the following in the system logs:

Apr 20 10:46:43 	snmpd[25257]: assignment to begemotTrapSinkComm.192.168.4.20.162 returns 10
Apr 20 10:46:43 	snmpd[25257]: in file /var/etc/snmpd.conf line 17
Apr 20 10:46:43 	snmpd[25257]: error in config file

my /etc/snmpd.conf:

# cat /etc/snmpd.config
# $FreeBSD: src/etc/snmpd.config,v 1.9.8.1 2009/04/15 03:14:26 kensmith Exp $
#
# Example configuration file for bsnmpd(1).
#

#
# Set some common variables
#
location := "ABC"
contact := "Meharban S. Hundal"
system := 1     # FreeBSD
traphost := "192.168.40.200"
trapport := "162"

# Change this!
read := "public"
# Uncomment begemotSnmpdCommunityString.0.2 below that sets the community
# string to enable write access.
write := "geheim"
trap := "mytrap"

#
# Configuration
#
%snmpd
begemotSnmpdDebugDumpPdus       = 2
begemotSnmpdDebugSyslogPri      = 7

#
# Set the read and write communities.
#
# The default value of the community strings is NULL (note, that this is
# different from the empty string). This disables both read and write access.
# To enable read access only the read community string must be set. Setting
# the write community string enables both read and write access with that
# string.
#
# Be sure to understand the security implications of SNMPv2 - the community
# strings are readable on the wire!
#
begemotSnmpdCommunityString.0.1 = $(read)
# begemotSnmpdCommunityString.0.2       = $(write)
begemotSnmpdCommunityDisable    = 0

# open standard SNMP ports
begemotSnmpdPortStatus.0.0.0.0.161 = 1

# open a unix domain socket
begemotSnmpdLocalPortStatus."/var/run/snmpd.sock" = 1
begemotSnmpdLocalPortType."/var/run/snmpd.sock" = 4

# send traps to the traphost
begemotTrapSinkStatus.[$(traphost)].$(trapport) = 4
begemotTrapSinkVersion.[$(traphost)].$(trapport) = 2
begemotTrapSinkComm.[$(traphost)].$(trapport) = $(trap)

sysContact      = $(contact)
sysLocation     = $(location)
sysObjectId     = 1.3.6.1.4.1.12325.1.1.2.1.$(system)

snmpEnableAuthenTraps = 2

#
# Load MIB-2 module
#
begemotSnmpdModulePath."mibII"  = "/usr/lib/snmp_mibII.so"

# Force a polling rate for the 64-bit interface counters in case
# the automatic computation is wrong (which may be the case if an interface
# announces the wrong bit rate via its MIB).
%mibII
begemotIfForcePoll = 2000

#
# Netgraph module
#
begemotSnmpdModulePath."netgraph" = "/usr/lib/snmp_netgraph.so"
#
%netgraph
begemotNgControlNodeName = "snmpd"

#
# pf(4) module
#
begemotSnmpdModulePath."pf"     = "/usr/lib/snmp_pf.so"

#
# Host resources module
#  This requires the mibII module.
#
begemotSnmpdModulePath."hostres" = "/usr/lib/snmp_hostres.so"

#
# Bridge module
#  This requires the mibII module.
#
begemotSnmpdModulePath."bridge" = "/usr/lib/snmp_bridge.so"
#

my /var/etc/snmpd.conf file:

# cat /var/etc/snmpd.conf
location := "ABC"
contact := "Meharban S Hundal"
read := "public"
# SNMP Trap support.
traphost := 192.168.40.200
trapport := 162
trap := ""

system := 1     # pfSense
%snmpd
begemotSnmpdDebugDumpPdus       = 2
begemotSnmpdDebugSyslogPri      = 7
begemotSnmpdCommunityString.0.1 = $(read)
begemotTrapSinkStatus.[$(traphost)].$(trapport) = 4
begemotTrapSinkVersion.[$(traphost)].$(trapport) = 2
begemotTrapSinkComm.[$(traphost)].$(trapport) = $(trap)
begemotSnmpdCommunityDisable    = 1
begemotSnmpdPortStatus.0.0.0.0.161 = 1
begemotSnmpdLocalPortStatus."/var/run/snmpd.sock" = 1
begemotSnmpdLocalPortType."/var/run/snmpd.sock" = 4

# These are bsnmp macros not php vars.
sysContact      = $(contact)
sysLocation     = $(location)
sysObjectId     = 1.3.6.1.4.1.12325.1.1.2.1.$(system)

snmpEnableAuthenTraps = 2
begemotSnmpdModulePath."mibII"  = "/usr/lib/snmp_mibII.so"
begemotSnmpdModulePath."netgraph" = "/usr/lib/snmp_netgraph.so"
%netgraph
begemotNgControlNodeName = "snmpd"
begemotSnmpdModulePath."pf"     = "/usr/lib/snmp_pf.so"
begemotSnmpdModulePath."hostres"     = "/usr/lib/snmp_hostres.so"
#

tried the following from command prompt and system log shows the same exact crash/no start info as above

/usr/sbin/bsnmpd -c /var/etc/snmpd.conf -p /var/run/snmpd.pid

any help/hints/tips are greatly appreciated :)

[Eugene]

Try to change

trap := ""

to```
trap := "mytrap"

in /var/etc/snmpd.conf

[jimp]

Or just fill in the "trap string" in the GUI. I thought this had input validation to prevent it being left blank, but I guess not :-)

from /etc/inc/services.inc line 701:

trap := "{$config['snmpd']['trapstring']}"

[mshundal]

thanks guys, that worked.

I am just a little confused as to what this is and why this is need.