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Hello,

I want to use the snmptrapd Daemon on a Linux Client to receive and log
SNMP trap messages, which are send from an IBM TS3500 Tape Library.
I can see the traps on the Linux client with tcpdump, but the
snmptrapd-Daemon doesn't log it.
I have tried to send Trap Version V1 and V2c, Community=public.
If I send test traps from other AIX or LINUX Clients, everything works
right.

When I look into the message with tcpdump or Ethereal, I can see that the
message has no checksum in User Datagram Protocol.
Could this cause a problem?

I have started the snmptrapd in the following way:

/usr/sbin/snmptrapd -M +/usr/share/snmp/mibs.local -m ALL -f -Lo

I use NET-SNMP Version 5.1.2 .

The MIBs should also be present:

itcsec02:/usr/share/snmp/mibs.local# ls
3584v1.mib BRCD_v5_0.mib.txt FA_v3_0.mib.txt ibm2100.mib
SML-MIB_112.mib SW_v5_0.mib.txt
3584v2c.mib Brocade-TC-MIB.txt FE_RFC2837.mib.txt ibm2100.mib.alt
SNIA-SML-rev1-21.mib

tcpdump shows the following messages:

itcsec02:~# tcpdump -ni eth1 -v -s0 port 162
tcpdump: listening on eth1, link-type EN10MB (Ethernet), capture size
65535 bytes
12:22:51.527190 IP (tos 0x0, ttl 59, id 19222, offset 0, flags [none],
length: 264) 10.10.60.73.18435 > 10.30.0.126.162: [no cksum] { SNMPv1 {
Trap(219) .1.3.6.1.4.1.4484.1 10.10.60.73 enterpriseSpecific s=408
174930620 .1.3.6.1.4.1.2.6.182.1.2.11.1="3584 L23 78A1266"
..1.3.6.1.4.1.2.6.182.1.2.111.1=" 0" .1.3.6.1.4.1.2.6.182.1.2.101.1=""
..1.3.6.1.4.1.2.6.182.1.2.41.1="08" .1.3.6.1.4.1.2.6.182.1.2.71.1="This is
a test SNMP trap." .1.3.6.1.4.1.2.6.182.1.2.151.1=1
..1.3.6.1.4.1.2.6.182.1.2.161.1="00000" } }
12:23:04.768598 IP (tos 0x0, ttl 59, id 19437, offset 0, flags [none],
length: 292) 10.10.60.73.18435 > 10.30.0.126.162: [no cksum] { SNMPv2c {
V2Trap(246) R=4 .1.3.6.1.2.1.1.3.0=174931845
..1.3.6.1.6.3.1.1.4.1.0=.1.3.6.1.4.1.2.6.182.1.0.4 08
..1.3.6.1.4.1.2.6.182.1.2.11.1="3584 L23 78A1266"
..1.3.6.1.4.1.2.6.182.1.2.111.1=" 0" .1.3.6.1.4.1.2.6.182.1.2.101.1=""
..1.3.6.1.4.1.2.6.182.1.2.41.1="08" .1.3.6.1.4.1.2.6.182.1.2.71.1="This is
a test SNMP trap." .1.3.6.1.4.1.2.6.182.1.2.151.1=1
..1.3.6.1.4.1.2.6.182.1.2.161.1="00000" } }

Can anybody help me to find out, why snmptrapd doesn't receive these
messages, please?
Thank you.

Thomas Falkenberg

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Hello,



I want to use the snmptrapd Daemon on
a Linux Client to receive and log SNMP trap messages, which are send from
an IBM TS3500 Tape Library.


I can see the traps on the Linux client
with tcpdump, but the snmptrapd-Daemon doesn't log it.


I have tried to send Trap Version V1
and V2c, Community=public.


If I send test traps from other AIX
or LINUX Clients, everything works right.




When I look into the message with tcpdump
or Ethereal, I can see that the message has no checksum in User
Datagram Protocol.


Could this cause a problem?



I have started the snmptrapd in the
following way:




/usr/sbin/snmptrapd -M +/usr/share/snmp/mibs.local
-m ALL -f -Lo




I use NET-SNMP Version 5.1.2 .



The MIBs should also be present:



itcsec02:/usr/share/snmp/mibs.local#
ls


3584v1.mib   BRCD_v5_0.mib.txt
  FA_v3_0.mib.txt     ibm2100.mib      SML-MIB_112.mib
      SW_v5_0.mib.txt


3584v2c.mib  Brocade-TC-MIB.txt
 FE_RFC2837.mib.txt  ibm2100.mib.alt  SNIA-SML-rev1-21.mib




tcpdump shows the following messages:



itcsec02:~# tcpdump -ni eth1 -v -s0
port 162


tcpdump: listening on eth1, link-type
EN10MB (Ethernet), capture size 65535 bytes


12:22:51.527190 IP (tos 0x0, ttl  59,
id 19222, offset 0, flags [none], length: 264) 10.10.60.73.18435 > 10.30.0.126.162:
[no cksum]  { SNMPv1 { Trap(219)  .1.3.6.1.4.1.4484.1 10.10.60.73
enterpriseSpecific s=408 174930620 .1.3.6.1.4.1.2.6.182.1.2.11.1="3584
L23 78A1266" .1.3.6.1.4.1.2.6.182.1.2.111.1="  0" .1.3.6.1.4.1.2.6.182.1.2.101.1=""
..1.3.6.1.4.1.2.6.182.1.2.41.1="08" .1.3.6.1.4.1.2.6.182.1.2.71.1="This
is a test SNMP trap." .1.3.6.1.4.1.2.6.182.1.2.151.1=1 .1.3.6.1.4.1.2.6.182.1.2.161.1="00000"
} }


12:23:04.768598 IP (tos 0x0, ttl  59,
id 19437, offset 0, flags [none], length: 292) 10.10.60.73.18435 > 10.30.0.126.162:
[no cksum]  { SNMPv2c { V2Trap(246) R=4  .1.3.6.1.2.1.1.3.0=174931845
..1.3.6.1.6.3.1.1.4.1.0=.1.3.6.1.4.1.2.6.182.1.0.4 08 .1.3.6.1.4.1.2.6.182.1.2.11.1="3584
L23 78A1266" .1.3.6.1.4.1.2.6.182.1.2.111.1="  0" .1.3.6.1.4.1.2.6.182.1.2.101.1=""
..1.3.6.1.4.1.2.6.182.1.2.41.1="08" .1.3.6.1.4.1.2.6.182.1.2.71.1="This
is a test SNMP trap." .1.3.6.1.4.1.2.6.182.1.2.151.1=1 .1.3.6.1.4.1.2.6.182.1.2.161.1="00000"
} }




Can anybody help me to find out, why
snmptrapd doesn't receive these messages, please?


Thank you.



Thomas Falkenberg


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