> On Feb 19, 2016, at 12:50 , Michael R. Haag
> <[email protected]> wrote:
>
> I’d like troubleshoot the problem by disabling services one-by-one on the
> Packetfence server as you recommend. Here is my list of running services on
> the Packetfence server. Any suggestions for which I should disable first?
Hi Michael,
Belay that for a while…
Your previous message suggests that the problem really is between the switch
and windows machine.
Here is my working hypothesis at this point:
Whenever you start PacketFence, you also enable a feature (such as 802.1x) on
the switch which implies IP device tracking (this could be implicit, with no
requirement for you to actually manually allow it).
See here for what Cisco says in a somewhat convoluted way:
Cisco IOS® uses the Address Resolution Protocol (ARP) Probe that is sourced
from an address of 0.0.0.0 in order to maintain the IP device-tracking cache
during IP device tracking, and a feature that uses it is enabled (such as
802.1x) on a Cisco IOS switch.
http://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/8021x/116529-problemsolution-product-00.html
<http://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/8021x/116529-problemsolution-product-00.html>
So before you start stopping services, try capturing traffic from the windows
machine.
I strongly suspect you will see ARP requests used for IP device traffic in use
even when you think they are disabled.
If you really must start stopping services on the PacketFence server, start
with the following:
pfdhcplistener_eth0 (just kill the process)
And then any process that is listed in
# netstat -tulnp
Obviously that is going to break PacketFence though.
I really doubt the problem is caused by PacketFence itself.
All signs point to the switch configuration.
Regards,
--
Louis Munro
[email protected] :: www.inverse.ca
+1.514.447.4918 x125 :: +1 (866) 353-6153 x125
Inverse inc. :: Leaders behind SOGo (www.sogo.nu) and PacketFence
(www.packetfence.org)
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