Is there a reason that you want to use a MAC detection vlan over RADIUS auth?

In my experience using Mac Authentication Bypass is superior to using a MAC 
Detection vlan in every way.

Obviously, if your requirements necessitate the use of a MAC detection vlan 
then you must, but if you have not considered MAB I would highly, HIGHLY 
suggest it over a MAC detection vlan.

Jake Sallee
Godfather of Bandwidth
System Engineer
University of Mary Hardin-Baylor

900 College St.
Belton, Texas
76513

Fone: 254-295-4658
Phax: 254-295-4221
________________________________
From: forbmsyn [[email protected]]
Sent: Friday, October 25, 2013 5:14 PM
To: [email protected]
Subject: [PacketFence-users] Why goes to "MAC detection VLAN 4" but not the 
default vlan 1?

Hello experts,

On PF I followed the instruction and created the following network:

VLAN ID VLAN Name Subnet            Gateway      PacketFence Address
1            Normal        192.168.1.0/24<http://192.168.1.0/24> 192.168.1.1 
192.168.1.5
2            Registration 192.168.2.0/24<http://192.168.2.0/24> 192.168.2.1 
192.168.2.1
3            Isolation       192.168.3.0/24<http://192.168.3.0/24> 192.168.3.1 
192.168.3.1
4            Mac Detection
5            Inline           192.168.5.0/24<http://192.168.5.0/24> 192.168.5.1 
192.168.5.1


I have a Cisco 2960 (IP 192.168.1.254), with the same vlans created as 
PacketFence. On Fa0/3 I have the following config:

interface FastEthernet0/3
 switchport access vlan 4
 switchport mode access
 switchport port-security maximum 1 vlan access
 switchport port-security
 switchport port-security violation restrict
 switchport port-security mac-address 0200.0001.0003


Then I plugged a laptop onto the port, the config was changed to as below, 
which looks good because it is now on registrion vlan (vlan ID 2) and obtained 
an IP 192.168.2.10

interface FastEthernet0/3
 switchport access vlan 2
 switchport mode access
 switchport port-security maximum 1 vlan access
 switchport port-security
 switchport port-security violation restrict
 switchport port-security mac-address 0015.c5cf.0f12


On PF I changed its status from unregistered to registered from PF WebUI, on 
the switch I found that port was switch back to MAC detection VLAN 4.

interface FastEthernet0/3
 switchport access vlan 4
 switchport mode access
 switchport port-security maximum 1 vlan access
 switchport port-security
 switchport port-security violation restrict
 switchport port-security mac-address 0015.c5cf.0f12



Below is part of the log from packetfence.log

May 28 00:49:46 httpd.admin(0) INFO: re-evaluating access for node 
00:15:c5:cf:0f:12 (node_modify called) (pf::enforcement::reevaluate_access)
May 28 00:49:46 httpd.admin(0) INFO: 00:15:c5:cf:0f:12 is currentlog connected 
at 192.168.1.254 ifIndex 10003 in VLAN 2 (pf::enforcement::_should_we_reass   
ign_vlan)
May 28 00:49:46 httpd.admin(0) INFO: Username was NOT defined or unable to 
match a role - returning node based role 'default' (pf::vlan::getNormalVlan)
May 28 00:49:46 httpd.admin(0) INFO: MAC: 00:15:c5:cf:0f:12, PID: admin, 
Status: reg. Returned VLAN: 1 (pf::vlan::fetchVlanForNode)
May 28 00:49:46 httpd.admin(0) INFO: VLAN reassignment required for 
00:15:c5:cf:0f:12 (current VLAN = 2 but should be in VLAN 1) 
(pf::enforcement::_should   _we_reassign_vlan)
May 28 00:49:46 httpd.admin(0) INFO: switch port for 00:15:c5:cf:0f:12 is 
192.168.1.254 ifIndex 10003 connection type: Wired SNMP 
(pf::enforcement::_vlan_   reevaluation)
May 28 00:49:49 pfsetvlan(25) INFO: local (127.0.0.1) trap for switch 
192.168.1.254 (main::parseTrap)
May 28 00:49:49 pfsetvlan(8) INFO: nb of items in queue: 1; nb of threads 
running: 0 (main::startTrapHandlers)
May 28 00:49:49 pfsetvlan(8) INFO: reAssignVlan trap received on 192.168.1.254 
ifIndex 10003 (main::handleTrap)
May 28 00:49:49 pfsetvlan(8) INFO: security traps are configured on 
192.168.1.254 ifIndex 10003. Re-assigning VLAN for 00:15:c5:cf:0f:12 
(main::handleTrap   )
May 28 00:49:49 pfsetvlan(8) INFO: Username was NOT defined or unable to match 
a role - returning node based role 'default' (pf::vlan::getNormalVlan)
May 28 00:49:49 pfsetvlan(8) WARN: No parameter defaultVlan found in 
conf/switches.conf for the switch 192.168.1.254 (pf::SNMP::getVlanByName)
May 28 00:49:49 pfsetvlan(8) INFO: MAC: 00:15:c5:cf:0f:12, PID: admin, Status: 
reg. Returned VLAN: default (pf::vlan::fetchVlanForNode)
Argument "default" isn't numeric in numeric eq (==) at 
/usr/local/pf/lib/pf/SNMP.pm line 614.
May 28 00:49:49 pfsetvlan(8) WARN: new VLAN default is not a managed VLAN -> 
replacing VLAN default with MAC detection VLAN 4 (pf::SNMP::setVlan)
May 28 00:49:49 pfsetvlan(8) INFO: no VoIP phone is currently connected at 
192.168.1.254 ifIndex 10003. Flipping port admin status (main::handleTrap)
May 28 00:49:53 pfsetvlan(8) INFO: finished (main::cleanupAfterThread)
May 28 00:50:25 pfmon(0) INFO: running expire check (main::cleanup)



I do have default vlan configure on switches.conf. Why the port was not set to 
vlan 1 but back to 4?
Below is the config of switches.conf

[root@packetfence conf]# more switches.conf
#
# Copyright 2006-2008 Inverse inc.
#
# See the enclosed file COPYING for license information (GPL).
# If you did not receive this file, see
# http://www.fsf.org/licensing/licenses/gpl.html
[default]
description=Switches Default Values
vlans=1,2,3,4,5
normalVlan=1
registrationVlan=2
isolationVlan=3
macDetectionVlan=4
voiceVlan=5
inlineVlan=6
inlineTrigger=
normalRole=normal
registrationRole=registration
isolationRole=isolation
macDetectionRole=macDetection
voiceRole=voice
inlineRole=inline
VoIPEnabled=no
mode=testing
macSearchesMaxNb=30
macSearchesSleepInterval=2
uplink=dynamic
#
# Command Line Interface
#
# cliTransport could be: Telnet, SSH or Serial
cliTransport=Telnet
cliUser=
cliPwd=
cliEnablePwd=
#
# SNMP section
#
# PacketFence -> Switch
SNMPVersion=1
SNMPCommunityRead=public
SNMPCommunityWrite=private
#SNMPEngineID = 0000000000000
#SNMPUserNameRead = readUser
#SNMPAuthProtocolRead = MD5
#SNMPAuthPasswordRead = authpwdread
#SNMPPrivProtocolRead = DES
#SNMPPrivPasswordRead = privpwdread
#SNMPUserNameWrite = writeUser
#SNMPAuthProtocolWrite = MD5
#SNMPAuthPasswordWrite = authpwdwrite
#SNMPPrivProtocolWrite = DES
#SNMPPrivPasswordWrite = privpwdwrite
# Switch -> PacketFence
SNMPVersionTrap=1
SNMPCommunityTrap=public
#SNMPAuthProtocolTrap = MD5
#SNMPAuthPasswordTrap = authpwdread
#SNMPPrivProtocolTrap = DES
#SNMPPrivPasswordTrap = privpwdread
#
# Web Services Interface
#
# wsTransport could be: http or https
wsTransport=http
wsUser=
wsPwd=
#
# RADIUS NAS Client config
#
# RADIUS shared secret with switch
radiusSecret=

[192.168.0.1]
description=Test Switch
type=Cisco::Catalyst_2900XL
mode=production
uplink=23,24

[192.168.1.254]
mode=production
deauthMethod=SSH
description=C2960
type=Cisco::Catalyst_2960
VoIPEnabled=N
radiusSecret=useStrongerSecret
uplink=24
cliTransport=SSH
SNMPVersion=2c
defaultRole=default
defaultVlan=1
#SNMPVersion = 3
#SNMPEngineID = 0000000000000
#SNMPUserNameRead = readUser
#SNMPAuthProtocolRead = MD5
#SNMPAuthPasswordRead = authpwdread
#SNMPPrivProtocolRead = DES
#SNMPPrivPasswordRead = privpwdread
#SNMPUserNameWrite = writeUser
#SNMPAuthProtocolWrite = MD5
#SNMPAuthPasswordWrite = authpwdwrite
#SNMPPrivProtocolWrite = DES
#SNMPPrivPasswordWrite = privpwdwrite
#SNMPVersionTrap = 3
#SNMPUserNameTrap = readUser
#SNMPAuthProtocolTrap = MD5
#SNMPAuthPasswordTrap = authpwdread
#SNMPPrivProtocolTrap = DES
#SNMPPrivPasswordTrap = privpwdread


Thank you!

Regards,
Jacky

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