Hello Luca,

it's also available for Linux: https://github.com/inverse-inc/packetfence-dhcp-forwarder/tree/master/dhcp-forwarder so you can install it on each cluster's member.


Le 2018-01-22 à 10:34, luca comes via PacketFence-users a écrit :
Hi Fabrice,
I'm using a cluster of ISC DHCPD on CentOS 7 so think I can't use your dhcp forwarder. I understand is it only for windows isn't it? Anyway I did a test, when the client change role it send a dhcp request to the server:

[root@dhcp01 ~]# tail -f /var/log/dhcp/dhcpd.log | grep 00:9c:02:92:ea:b0
Jan 22 12:23:54 dhcp01 dhcpd: DHCPACK to 172.20.251.192 (00:9c:02:92:ea:b0) via ens160 Jan 22 12:24:00 dhcp01 dhcpd: DHCPREQUEST for 172.20.251.192 from 00:9c:02:92:ea:b0 (LAB3-NB) via 192.168.167.1: wrong network. Jan 22 12:24:00 dhcp01 dhcpd: DHCPNAK on 172.20.251.192 to 00:9c:02:92:ea:b0 via 192.168.167.1 Jan 22 12:24:00 dhcp01 dhcpd: DHCPDISCOVER from 00:9c:02:92:ea:b0 via 192.168.167.1 Jan 22 12:24:01 dhcp01 dhcpd: DHCPOFFER on 192.168.167.190 to 00:9c:02:92:ea:b0 (LAB3-NB) via 192.168.167.1 Jan 22 12:24:01 dhcp01 dhcpd: DHCPREQUEST for 192.168.167.190 (172.27.112.17) from 00:9c:02:92:ea:b0 (LAB3-NB) via 192.168.167.1 Jan 22 12:24:01 dhcp01 dhcpd: DHCPACK on 192.168.167.190 to 00:9c:02:92:ea:b0 (LAB3-NB) via 192.168.167.1

Instead I can't see any packet on the pfdhcplistener for that MAC Address. The strange thing is that it is receiving traffic from the DHCP on port 767. At the moment I put an helper address on the switch so a copy of the traffic is sent directly to the pfdhcplistener and the client IP is updated. It's always showed as offline but I don't understand why.
If you didn't install the forwarder , from where do you receive the copy of the dhcp traffic on the port 767 ?
Also inline/offline is based on the accounting , not from the dhcp.

Regards
Fabrice


Luca

Inviato da Outlook <http://aka.ms/weboutlook>

------------------------------------------------------------------------
*Da:* Durand fabrice via PacketFence-users <packetfence-users@lists.sourceforge.net>
*Inviato:* sabato 20 gennaio 2018 03:21
*A:* packetfence-users@lists.sourceforge.net
*Cc:* Durand fabrice
*Oggetto:* Re: [PacketFence-users] No client IP update in cluster

Hello Lucas,


first use that instead:

https://github.com/inverse-inc/packetfence-dhcp-forwarder


And there is no listening process on UDP 767 but pfdhcplistener capture the traffic on 67/68 and 767.

If you tail pfdhcplistener on the server where the vip is , do you see some updates from te hproduction dhcp server ?

Also do a capture on the management interface to see if you receive something on the port 767. (tshark -i eth0 -f "port 767")


Regards

Fabrice



Le 2018-01-18 à 09:43, luca comes via PacketFence-users a écrit :
Hi all,
I've migrated my single node infrastructure to a 3 node cluster. At the moment I'm testing 802.1x with a Cisco catalyst 2950 and the authentication is working fine. I also have in production a wireless guest access with sponsor on Cisco WLC taht is working really well. Unfortunately I noticed that the client IP address is never updated on the nodes page. I have a production DHCP server on the same management VLAN with udp_reflector pointing to the new VIP on the cluster. With single node the problem wasn't showed and the IP was correctly updated after a few seconds. The command I'm using on the DHCP server is:

/usr/local/bin/udp_reflector -s pcap2:67 -d 172.27.17.7:767 -b 25000 &

Where 172.27.17.7 is the VIP exposed by the cluster.

I would expect UDP port 767 on PF nodes in listening but they are not. Is something missing in my configuration?

Thanks

Luca

Inviato da Outlook <http://aka.ms/weboutlook>



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