Hi ,
I am using Netsnmp 5.4.2.1 in my linux box and had some issues in launching
snmpd, but finally it got resolved by changing the way of passing parameter
to snmpd process.
I had Netsnmp 5.3.x version earlier, and the way I was launching snmpd was:
snmpd -c snmpd.conf udp:161,udp6:161 -x localhost:161
after I launch this, I could see the following ports open:
udp on *.161
udp6 on *.161
tcp on localhost:161 ( Master Agentx LISTENING on TCP:161 port) and the
sub agents could connect to Master agent on TCP port 161.
If I try the same way of launching snmpd in 5.4.2.1, then I was getting the
error "Unable to open specified endpoint """, later I added space between
udp:161 and upd6:161 instead of comma while launching snmpd i.e
snmpd -c snmpd.conf udp:161 udp6:161 -x localhost:161
after I launch this, I could see the following ports open:
udp on *.161
udp6 on *.161
Agentx on unix domain socket instead of TCP.
Later I passed tcp:localhost:161 to snmpd instead of just localhost:161, i.e
snmpd -c snmpd.conf udp:161 udp6:161 -x tcp:localhost:161
with this I could see the following ports open,
udp on *.161udp6 on *.161
tcp on localhost:161 ( Master Agentx LISTENING on TCP:161 port) and the
sub agents could connect to Master agent on TCP port 161.
I need a clarification in the way snmpd is launched in 5.4.2.1, I went
through FAQ there I could see if we don't specify localhost then it binds to
unix domain socket, in 5.4.2.1 even after specifying localhost:161, the
Master Agentx binds to Unix domain socket!
Could you clarify on this?
Lastly(not of great importance), do we have a definite way of specifying
more than one listening address to snmpd? How the list is separated( either
with commas or with spaces), in the man pages of snmpd I didn't see how the
list of listening addresses are separated?
Thanks,
Harish
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