Hi. Thanks for your reply. I try to use "-s" and "--clientaddr" but it dose not work. My version is net-snmp-5.8. My commond is "snmptrap -v3 -u usertest -l authPriv -a SHA -A usertest -x AES -X usertest -s 10.2.24.121 10.2.24.18 84100 …… ". May I ask you how the snmptrap chooses the network interface by it self?
Is it polling all the enable ports? Regards At 2019-05-23 15:54:28, "Klemen Sladic" <gostur...@gmail.com> wrote: Hi. Any traffic originating from snmpd will have src IP of outgoing network interface. From my experience "clientaddr" helps for replies generated by snmpd. For example, if you have multiple interfaces and "clientaddr" is set, any snmpd response, like response to snmpget, snmpwalk etc. will have desired src IP. But this won't work for packets initiated by snmpd, like traps. What I did, was changing the route src settings. For example, if you have eth0 in 192.168.0.0/24 and eth1 in 192.168.1.0/24 and you want any traffic to have source of 192.168.0.0/24, then change eth1 subnet route like: ip route change 192.168.1.0/24 dev eth1 src 192.168.0.1 if 192.168.0.1 is eth0 IP. Of course this may have other side effects on routing in your system. RegK On Thu, May 23, 2019 at 6:30 PM Anders Wallin <walli...@gmail.com> wrote: You can use "clientaddr" in snmp.conf or snmpd.conf, https://linux.die.net/man/5/snmp.conf In 5.8 you also have the possibility to use "-s" with trapsess, but I did not found any documentation on it. but check the test code, testing/fulltests/default/T184trapsesssource_simple Regards Anders Wallin On Wed, May 22, 2019 at 5:21 PM ww <ww634539...@163.com> wrote: Hello, Thank you for reading my email. Can I specify the source IP when send a V2/V3 trap like V1? _______________________________________________ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users _______________________________________________ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
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