net-snmp how to send a trap

hi, im new to net-snmp. this is 5.2.1 on linux.

I am trying to get net-snmp to send a trap when a network link goes up/
down.

Question is, I dont seem to be sending any traps, even auth traps when
I login(i enabled these also)
Here is my config, after I used the setup program. I set up the
informsink trap host. When I restart snmpd I get the following: I
think the traphost is down so will look into that, but shouldnt the
traps still be sent?

18:20:41.095178 IP svr1.32795 > alarm-host.snmptrap: Inform(39)
system.sysUpTime.0=5069 S:=[|snmp]
18:20:41.320778 IP svr1.32796 > alarm-host.snmptrap: Inform(39)
system.sysUpTime.0=10 S:1=[|snmp]
18:20:41.329785 IP alarm-host > svr1: icmp 92: alarm-host udp port
snmptrap unreachable


Is there something special I need to configure and also enable link
traps? I tried to enable the option linkUpDownNotifications yes but
still nothing was sent,


################################################## #########################
#
# snmpd.conf
#
# - created by the snmpconf configuration program
#
################################################## #########################
# SECTION: Monitor Various Aspects of the Running Host
#
# The following check up on various aspects of a host.

# proc: Check for processes that should be running.
# proc NAME [MAX=0] [MIN=0]
#
# NAME: the name of the process to check for. It must match
# exactly (ie, http will not find httpd processes).
# MAX: the maximum number allowed to be running. Defaults to 0.
# MIN: the minimum number to be running. Defaults to 0.
#
# The results are reported in the prTable section of the UCD-SNMP-
MIB tree
# Special Case: When the min and max numbers are both 0, it assumes
# you want a max of infinity and a min of 1.

proc cntFilter.sh 1 1

# 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

disk /export/oracle01 "10 %"

# load: Check for unreasonable load average values.
# Watch the load average levels on the machine.
#
# load [1MAX=12.0] [5MAX=12.0] [15MAX=12.0]
#
# 1MAX: If the 1 minute load average is above this limit at query
# time, the errorFlag will be set.
# 5MAX: Similar, but for 5 min average.
# 15MAX: Similar, but for 15 min average.
#
# The results are reported in the laTable section of the UCD-SNMP-
MIB tree

load 5 5 5



################################################## #########################
# 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 Testbed

# 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 "Chris Brown"

################################################## #######################
# SECTION: Trap Destinations
#
# Here we define who the agent will send traps to.

# informsink: A SNMPv2c inform (acknowledged trap) receiver
# arguments: host [community] [portnum]

informsink alarm-host public 162

# 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 1