Re: SNMP V3 trap not working when configuring same user with different authentication type

Hi Hitesh Patel,

 snmptrapd.conf  have entry for 'user' with MD5/AES not with SHA/DES

Thanks,
Pushpa.T

On Wed, Jul 19, 2017 at 4:21 PM, Hitesh Patel <[email protected]>
wrote:

> Hello everybody,
>
> I am using Linux based snmp (net-snmp) in my Linux device. To receive snmp
> trap on Linux host machine, I have configured snmptrapd in
> /etc/snmp/snmptrapd.conf file as below (After stopping snmpd daemon)
>
> createUser user MD5 "password123" DES "encrypt123"
> authuser log user authPriv
>
> Above configuration allow me to receive snmp trap on Linux host machine
> when I execute below command from my Linux device
> snmptrap -Ci -v3 -u user -a MD5 -A password123 -x DES -X encrypt123 -l
> authPriv 10.103.0.110 '' Test-MIB::statusChangeNotification
> Test-MIB::statusChangeAlarm s 'status change'
>
> Now if I execute above snmptrap command with same user and SHA/DES
> configuration (as below) then in that case snmptrap command is failing with
> "snmpinform: Authentication failure (incorrect password, community or key)"
> error message. (snmptrapd is stopped and started after SHA/DES
> configuration as above.)
> snmptrap -Ci -v3 -u user -a SHA -A password123 -x DES -X encrypt123 -l
> authPriv 10.103.0.110 '' Test-MIB::statusChangeNotification
> Test-MIB::statusChangeAlarm s 'status change'
>
> Can anybody suggest possible reason behind this error?
> Does snmptap command maintain usmUser table which not allow same user
> entry with different authentication type?
> Is there any way to reset usmUser table?
> Is there any additional configuration required?
>
> Thanks in advance,
> Hitesh Patel
>
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