Hi,
From what I see : It seems that the SNMP trap daemon is working and listening
on port 162, what is OK.
How is this daemon configured :
snmptrapd.conf ? => per default the Traps are not handled
How is your cisco router configured: / does it send Traps ?
snmp-server host Your-VM-IP Your-trap-Community
snmp-server enable traps The-Traps-You-Want-To-See
Are the traps reaching the VM:
Sniffing with Wireshark
Hope this helps
Best regards
JMJ
De : riva riv [mailto:rivari...@gmail.com]
Envoyé : mercredi, 17. mai 2017 10:33
À : net-snmp-users@lists.sourceforge.net
Objet : couldn't open udp:162 -- errno 98 ("Address already in use")
Hi Experts,
I am trying to receive a trap generated by a cisco router on my VM- Ubuntu
14.04. I can do a snmwalk so I guess snmp is working fine but I am not able to
receive the traps generated by router on my VM.
a@ubuntu:~$ sudo /etc/init.d/snmpd restart
* Restarting network management services:
a@ubuntu:~$ sudo /etc/init.d/snmpd status
* snmpd is running
* snmptrapd is running
Here is what I have inside files-
/etc/default/snmpd-
export MIBS=
SNMPDRUN=yes
SNMPDOPTS='-Lsd -Lf /dev/null -u snmp -I -smux -p /var/run/snmpd.pid -c
/etc/snmp/snmpd.conf'
TRAPDRUN=yes
# snmptrapd options (use syslog).
TRAPDOPTS='-n -On -t -Lsd -p /var/run/snmptrapd.pid'
/etc/snmp/-
snmpd.conf-
rocommunity public
snmptrapd.conf-
disableAuthorization yes
snmp.conf-
mibs:
The command I am running for viewing the traps on VM-
a@ubuntu:/etc/snmp$ sudo snmptrapd -f -Lo -c snmptrapd.conf
couldn't open udp:162 -- errno 98 ("Address already in use")
I am confused since the port is being used by snmptrap itself-
a@ubuntu:~$ cat /etc/services|grep 162
snmp-trap 162/tcp snmptrap # Traps for SNMP
snmp-trap 162/udp snmptrap
a@ubuntu:~$ sudo netstat -lnp| grep 162
udp 0 0 0.0.0.0:162<http://0.0.0.0:162/> 0.0.0.0:*
6216/snmptrapd
a@ubuntu:~$ ps -ef | grep snmptrapd
root 6216 2076 0 10:43 ? 00:00:00 /usr/sbin/snmptrapd -Lsd -p
/var/run/snmptrapd.pid
a 6493 2667 0 11:47 pts/8 00:00:00 grep --color=auto snmptrapd
Is there any way of solving this issue? I have googled a lot and stuck on this
for days, any help will be very much appreciated.
Thanks a lot in advance!!
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