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We have upgraded our COS v5 to V7.3 and now our Avaya handsets are not getting the correct address from the ClearOS.

There are four physical interfaces, External, LAN, Corporate WAN and Visitor. - IP Settings.PNG

The LAN interface is set up for three VLANs with no IP address on the physical interface.

VLAN 100 - LAN
VLAN 102 - Second LAN
VLAN 200 - VOIP


DHCP is enabled on two of the VLANs and also the Visitor interface. - DHCP-Settings.PNG

A handset plugged into port 5 on the switch is being served an address from the Visitor LAN.

Excerpt from Switch Config file:
interface gigabitethernet1/5
switchport trunk allowed vlan add 200
switchport trunk native vlan 900


Relevant bit of DHCP.conf
#Voice
dhcp-option=eno2.200,1,255.255.255.0
dhcp-option=eno2.200,28,10.20.44.255
dhcp-option=eno2.200,3,10.20.44.5
dhcp-option=eno2.200,6,10.20.44.5
dhcp-option=eno2.200,242,MCIPADD=10.20.44.20,MCPORT=1719,HTTPSRVR=10.20.44.10,HTTPDIR=/boot/,L2QVLAN=200,FILESRVR=10.20.44.10
dhcp-range=eno2.200,10.20.44.100,10.20.44.254,24h


At the moment we are manually setting the IP address for each handset.
Tuesday, September 05 2017, 08:54 AM
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  • Accepted Answer

    Wednesday, October 11 2017, 02:49 PM - #Permalink
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    For any one looking for the answer for this the solution was to put the
    dhcp-option=eno2.200,242,MCIPADD=10.20.44.20,MCPORT=1719,HTTPSRVR=10.20.44.10,HTTPDIR=/boot/,L2QVLAN=200,FILESRVR=10.20.44.10

    into the dhcp.conf file for the visitor network.

    That way any Avaya phone coming into the switch gets tagged as VLAN 200 and so served an address by the VLAN 200 DHCP server.
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