Re: couldn't open udp:162 -- errno 98 ("Address already in use")

Hi JMJ,

Thanks a lot for your response.
This is what I have in /etc/snmp/snmptrapd.conf:
disableAuthorization yes

The cisco config is as follows-
snmp-server community public RO
snmp-server enable traps config
snmp-server host 192.168.6.149 vrf Mgmt-intf public

Turns out my router CSRV (running on VM) is not sending traps as I am able
to log in the traps when sent via my windows CMD.

Thanks.

On Wed, May 17, 2017 at 2:39 PM, Jurkiewicz Jean-Marc <
[email protected]> wrote:

> 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:[email protected]]
> *Envoyé :* mercredi, 17. mai 2017 10:33
> *À :* [email protected]
> *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             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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