Re: [Packetfence-users] VLAN switching issue

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Thanks for the speedy response.
I've checked that the SNMP port is open in IPTables, nothing in the log and the problem persists even if you disable the firewall.

--- On Wed, 3/2/10, Sallee, Stephen (Jake) <Jak...@um...> wrote:

From: Sallee, Stephen (Jake) <Jak...@um...>
Subject: Re: [Packetfence-users] VLAN switching issue
To: pac...@li...
Date: Wednesday, 3 February, 2010, 16:53

It might sound dumb but I had the exact same problem and
iptables was the culprit, I had to make sure UPD ports 161 and 162 (I think,
whatever the default SNMP ports are) were open.  I think iptables writes
to a log every time it denies a stream, if you can find the iptables log it may
help. 

Jake Sallee 

Network Engineer 

University of Mary Hardin-Baylor 

900 College St. 

Belton Texas, 76513 

Fone:     254-295-4658 

Phax:     254-295-4221 

From: Steven Venn
[mailto:mig...@ya...] 

Sent: Wednesday, February 03, 2010 10:35 AM

To: pac...@li...

Subject: [Packetfence-users] VLAN switching issue 

  I'm having difficulty getting PacketFence on my CentOS 5.4
  PC to perform the VLAN switching, everything appears to be configured
  correctly, all processes running, VLANs trunked ok, using a basic SNMPv2
  setup and the defaut VLANs for PacketFence.

  tail -f /usr/local/pf/logs/snmptrapd.log

  shows the incoming link state changes

  /usr/local/pf/bin/pfcmd_vlan -getAllMACs -switch 192.168.1.240

  shows the mac is obtained from the switchport

  I can set the VLAN on the switch

  /usr/local/pf/bin/pfcmd_vlan -SetVlan -vlan 2 -switch 192.168..1.240 -ifIndex
  10109

  I am using a Cisco 3750G, however I've also tried a 2950 with no more
  success, the SNMP debug output is essentially the same.

  I've included the Cisco IOS debug in case this sheds any light on the issue

  grateful for any assistance with this

  3750G SNMP Debug

  ========================================================================

  *Mar  9 18:38:17.820: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/11,
  changed state to up 

  *Mar  9 18:38:18.827: %LINEPROTO-5-UPDOWN: Line protocol on Interface
  GigabitEthernet1/0/11, changed state to up 

  *Mar  9 18:38:18.827: SNMP: Queuing packet to 192.168.1.249 

  *Mar  9 18:38:18.827: SNMP: V2 Trap, reqid 107, errstat 0, erridx 0 

   sysUpTime.0 = 75829884 

   snmpTrapOID.0 = snmpTraps.4 

   ifIndex.10111 = 10111 

   ifDescr.10111 = GigabitEthernet1/0/11 

   ifType.10111 = 6 

   lifEntry.20.10111 = up 

  *Mar  9 18:38:19.078: SNMP: Packet sent via UDP to 192.168.1.249 

  *Mar  9 18:38:22.979: SNMP: Packet received via UDP from 192.168.1.249
  on Vlan1 

  *Mar  9 18:38:22.979: SNMP: Get request, reqid 14911, errstat 0, erridx
  0 

   system.6.0 = NULL TYPE/VALUE 

  *Mar  9 18:38:22.987: SNMP: Response, reqid 14911, errstat 0, erridx 0 

   system.6.0 = 

  *Mar  9 18:38:22.987: SNMP: Packet sent via UDP to 192.168.1.249 

  *Mar  9 18:38:22.996: SNMP: Packet received via UDP from 192.168.1.249
  on Vlan1 

  *Mar  9 18:38:22.996: SNMP: Get request, reqid 14912, errstat 0, erridx
  0 

   ifType.10111 = NULL TYPE/VALUE 

  *Mar  9 18:38:23.004: SNMP: Response, reqid 14912, errstat 0, erridx 0 

   ifType.10111 = 6 

  *Mar  9 18:38:23.004: SNMP: Packet sent via UDP to 192.168.1.249 

  *Mar  9 18:38:23.029: SNMP: Packet received via UDP from 192.168.1.249
  on Vlan1 

  *Mar  9 18:38:23.029: SNMP: Get request, reqid 14913, errstat 0, erridx
  0 

   cpsIfConfigEntry.1.10111 = NULL TYPE/VALUE 

  *Mar  9 18:38:23.029: SNMP: Response, reqid 14913, errstat 0, erridx 0 

   cpsIfConfigEntry.1.10111 = 2 

  *Mar  9 18:38:23.038: SNMP: Packet sent via UDP to 192.168.1.249 

  *Mar  9 18:38:23.038: SNMP: Packet received via UDP from 192.168.1.249
  on Vlan1 

  *Mar  9 18:38:23.046: SNMP: Get request, reqid 14914, errstat 0, erridx
  0 

   vmMembershipEntry.2.10111 = NULL TYPE/VALUE 

  *Mar  9 18:38:23.046: SNMP: Response, reqid 14914, errstat 0, erridx 0 

   vmMembershipEntry.2.10111 = 4 

  *Mar  9 18:38:23.046: SNMP: Packet sent via UDP to 192.168.1.249 

  *Mar  9 18:38:23.054: SNMP: Packet received via UDP from 192.168.1.249
  on Vlan1 

  *Mar  9 18:38:23.054: SNMP: Get request, reqid 14915, errstat 0, erridx
  0 

   vtpVlanEntry.4.1.4 = NULL TYPE/VALUE 

  *Mar  9 18:38:23.054: SNMP: Response, reqid 14915, errstat 0, erridx 0 

   vtpVlanEntry.4.1.4 = VLAN0004 

  *Mar  9 18:38:23.063: SNMP: Packet sent via UDP to 192.168.1.249 

  *Mar  9 18:38:23.063: SNMP: Packet received via UDP from 192.168.1.249
  on Vlan1 

  *Mar  9 18:38:23.063: SNMP: Get request, reqid 14916, errstat 0, erridx
  0 

   cmnMacAddrLearntEnable.10111 = NULL TYPE/VALUE 

  *Mar  9 18:38:23.063: SNMP: Response, reqid 14916, errstat 0, erridx 0 

   cmnMacAddrLearntEnable.10111 = 1 

  *Mar  9 18:38:23.071: SNMP: Packet sent via UDP to 192.168.1.249 

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