snmp-server trap-source using pysnmp

Question

I'm relatively new to pysnmp. My current requirement is to support trap source for snmp traps. I am trying to understand how I can support this with pysnmp ntforg.NotificationOriginator construct.

My current code snippet for sending out traps is as follows:

varBinds = rfc1902.ObjectIdentity('SNMPv2-MIB', 'coldStart')
    trapVarBinds = trapAgent.VarBinds(varBinds,'','')
    trapPdu = rfc1902.NotificationType(
                varBinds
            ).resolveWithMib(self.mibViewController)        
    SendTrap(trapAgent.TrapData(trapPdu,trapVarBinds))

 def SendTrap(self,trapData):
    for server in trapServer:  #list of trapServer config info
        data = trapServer[server]
        print 'Trap server:%s'%(data,)
        sendRequestHandle = ntforg.NotificationOriginator(snmpContext).sendVarBinds(
        snmpEngine,
        data.Name,
        #None,'',
        snmpContext.contextEngineId,'',
        trapData.trapPdu
        )

Any insights/advice on how to support for trap source here would be very helpful. Thanks!

Answer 1

refer Notification Originator

you can specify source IP and port like below

from pysnmp.entity import config
from pysnmp.carrier.asynsock.dgram import udp

config.addSocketTransport(
snmpEngine,
udp.domainName,
udp.UdpSocketTransport().openClientMode(iface=('127.0.0.1', 1024))
)