Tried with snmpwalk on the broadcast address 192.168.1.25
snmpwalk -v2c -c public <192.168.1.25> 1.3.6.1.2.1.1.1.0
sendmsg(3, {msg_name(16)={sa_family=AF_INET, sin_port=htons(161),
sin_addr=inet_addr("*192.168.1.25*")},
msg_iov(1)=[{"0)\2\1\1\4\6public\241\34\2\4\36;\4\337\2\1\0\2\1\0000\0160\f\6"...,
43}], msg_controllen=0, msg_flags=0}, MSG_DONTWAIT|MSG_NOSIGNAL) = 43
select(4, [3], NULL, NULL, {14, 999988}) = 1 (in [3], left {14, 999729})
recvmsg(3, {msg_name(16)={sa_family=AF_INET, sin_port=htons(161),
sin_addr=inet_addr("*192.168.1.16*")},
msg_iov(1)=[{"03\2\1\1\4\6public\242&\2\4\36;\4\337\2\1\0\2\1\0000\0300\26\6"...,
65536}], msg_controllen=0, msg_flags=0}, MSG_DONTWAIT) = 53
getsockname(3, {sa_family=AF_INET, sin_port=htons(45826),
sin_addr=inet_addr("0.0.0.0")}, [16]) = 0
sendmsg(3, {msg_name(16)={sa_family=AF_INET, sin_port=htons(161),
sin_addr=inet_addr("*192.168.1.25*")},
msg_iov(1)=[{"0)\2\1\1\4\6public\240\34\2\4\36;\4\340\2\1\0\2\1\0000\0160\f\6"...,
43}], msg_controllen=0, msg_flags=0}, MSG_DONTWAIT|MSG_NOSIGNAL) = 43
select(4, [3], NULL, NULL, {14, 999995}) = 1 (in [3], left {14, 999991})
recvmsg(3, {msg_name(16)={sa_family=AF_INET, sin_port=htons(161),
sin_addr=inet_addr("*192.168.1.10*")},
msg_iov(1)=[{"03\2\1\1\4\6public\242&\2\4\36;\4\337\2\1\0\2\1\0000\0300\26\6"...,
65536}], msg_controllen=0, msg_flags=0}, MSG_DONTWAIT) = 53
getsockname(3, {sa_family=AF_INET, sin_port=htons(45826),
sin_addr=inet_addr("0.0.0.0")}, [16]) = 0
select(4, [3], NULL, NULL, {14, 999681}) = 1 (in [3], left {14, 999677})
recvmsg(3, {msg_name(16)={sa_family=AF_INET, sin_port=htons(161),
sin_addr=inet_addr("*192.168.1.15*")},
msg_iov(1)=[{"03\2\1\1\4\6public\242&\2\4\36;\4\337\2\1\0\2\1\0000\0300\26\6"...,
65536}], msg_controllen=0, msg_flags=0}, MSG_DONTWAIT) = 53
getsockname(3, {sa_family=AF_INET, sin_port=htons(45826),
sin_addr=inet_addr("0.0.0.0")}, [16]) = 0
select(4, [3], NULL, NULL, {14, 999480}) = 1 (in [3], left {14, 999477})
recvmsg(3, {msg_name(16)={sa_family=AF_INET, sin_port=htons(161),
sin_addr=inet_addr("*192.168.1.16*")},
msg_iov(1)=[{"0\201\200\2\1\1\4\6public\242s\2\4\36;\4\340\2\1\0\2\1\0000e0c"...,
65536}], msg_controllen=0, msg_flags=0}, MSG_DONTWAIT) = 131
getsockname(3, {sa_family=AF_INET, sin_port=htons(45826),
sin_addr=inet_addr("0.0.0.0")}, [16]) = 0
fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 3), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f8bc2197000
write(1, "SNMPv2-MIB::sysDescr.0 = STRING:"..., 121SNMPv2-MIB::sysDescr.0 =
STRING: *Linux debian-abhilash* 3.16.0-4-amd64 #1 SMP Debian
3.16.36-1+deb8u2 (2016-10-19) x86_64
>From the above output we can see that, snmpwalk on broadcast ip
192.168.1.25, checks for the snmp agents in the following machines
192.168.1.16
192.168.1.10
192.168.1.15
But it prints the value "sysdescr" only for 192.168.1.16.
Please let me know what i am missing here.
Thanks
Guruprasad
On Wed, Jun 21, 2017 at 3:58 PM, Guru Prasad <gp22onl...@gmail.com> wrote:
> Hi All,
>
> Using netsnmp-5.7.3 in a debian machine.
> I am trying to run snmpget on the network's broadcast address so as to get
> all
> the snmp agents in my network. But i could not get the response of the
> snmp agents at once. It gives the information of one snmp agent at a time
>
> snmpget -v2c -c public <192.168.1.25> 1.3.6.1.2.1.1.1.0
>
> Actually i have two snmp agents in my network.
> But getting only one agent's info at a time
>
> SNMPv2-MIB::sysDescr.0 = STRING: Linux Debian-64 bit
>
> Running the above snmpget command after few seconds gives
>
> SNMPv2-MIB::sysDescr.0 = STRING: Linux Ubuntu-32 bit
>
> But what i expect is
> snmpget -v2c -c public <192.168.1.25> 1.3.6.1.2.1.1.1.0 should give the
> following output
>
> SNMPv2-MIB::sysDescr.0 = STRING: Linux Debian-64 bit (192.168.1.10)
> SNMPv2-MIB::sysDescr.0 = STRING: Linux Ubuntu-32 bit (192.168.1.15)
>
> Why snmpget is not giving the output of all snmp agents at once?
>
> Thanks
> Guruprasad
>
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