Hi Fabrice,
My traffic is encrypted using SNMP v3
So listening to it would not be useful as this. I should first use
SNMPv1 or 2.
Anyway, I suspect my switch ( ESW-540-48 ) to have a bug, as I also have
/_another_/ problem:
I can't see in ARP table (directly on the switch web admin
interface) the MAC address of some laptops directly plugged in this switch.
And reboot solved this problem.
I'll come back with SNMPv1 or 2 capture when switch bug above is fixed.
Thanks for your answer anyway
Regards,
Alex
*From:* Alex <[email protected]>
*Sent:* Tue 15 Jul 2014 - 16:49
*To:* [email protected]
*Subject:* WARN: couldn't get MAC
Hi all,
I have a problem for some equipment: their MAC address cannot be
retrieved by packet fence.
This is what I have in the packetfence.log :
Jul 15 14:26:15 pfsetvlan(14) INFO: nb of items in queue: 1; nb of
threads running: 0 (main::startTrapHandlers)
Jul 15 14:26:16 pfsetvlan(14) INFO: up trap received on 10.19.1.29
ifIndex 35 (main::handleTrap)
Jul 15 14:26:16 pfsetvlan(14) INFO: setting 10.19.1.29 port 35 to
MAC detection VLAN (main::handleTrap)
Jul 15 14:26:16 pfsetvlan(14) INFO: Should set 10.19.1.29 ifIndex
35 to VLAN 2469 but it is already in this VLAN -> Do nothing
(pf::Switch::setVlan)
Jul 15 14:26:16 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:18 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:20 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:22 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:24 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:26 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:29 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:31 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:33 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:35 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:37 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:39 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:41 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:44 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:46 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:48 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:50 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:52 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:54 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:56 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:26:59 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:27:01 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:27:03 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:27:05 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:27:07 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:27:09 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:27:11 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:27:14 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:27:16 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:27:18 pfsetvlan(14) WARN: couldn't get MAC at ifIndex
35. This is a problem. (pf::Switch::_getMacAtIfIndex)
Jul 15 14:27:18 pfsetvlan(14) WARN: Tried to grab MAC address at
ifIndex 35 on switch 10.19.1.29 30 times and failed (main::handleTrap)
Jul 15 14:27:18 pfsetvlan(14) INFO: cannot find MAC (maybe we
found a VoIP, but they don't count here). Do nothing
(main::handleTrap)
Jul 15 14:27:18 pfsetvlan(14) INFO: finished
(main::cleanupAfterThread)
This problem appears only on some equipments / ports.
If I try manually to get the MAC address with pfcmd_vlan , I can get
it with no problem, whatever the VLAN of the port is:
root /usr/local/pf #./bin/pfcmd_vlan -switch 10.19.1.29 -ifIndex
35 -setVlan -vlan 2469
new VLAN: 2469
root /usr/local/pf #./bin/pfcmd_vlan -switch 10.19.1.29 -ifIndex
35 -getMAC
00:00:CC:11:00:00
root /usr/local/pf #./bin/pfcmd_vlan -switch 10.19.1.29 -ifIndex
35 -setVlan -vlan 1
new VLAN: 1
root /usr/local/pf #./bin/pfcmd_vlan -switch 10.19.1.29 -ifIndex
35 -getMAC
00:00:CC:11:00:00
This equipment is plugged in, and works nicely (if I put it in the
correct VLAN manually).
Note that this equipment is not a computer, but a sensor.
How can I know why I have all the "couldn't get MAC " messages in
packetfence.log (and avoid the consequence that is the equipment is
not put in correct VLAN).
Thanks !
--
Alex
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