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Old 08-25-2015, 06:04 AM
kirchenlo kirchenlo is offline
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Default DHCP Lease

Does anyone know how IP Office does handle the DHCP lease, when I use IP Office as DHCP server? It seems that the DHCP lease of IP Office is 3 days but I am not 100% shure.

I have a problem at a customer that the phones are rebooting regularly and I have the impression it is related to the DHCP lease, any idea?

This is what I found about the DHCP lease, so therefore I think my issue might related to the DHCP lease:

Option 51 - DHCP lease time.

If this option is not received, the DHCPOFFER is not be accepted. Avaya recommends a lease time of six weeks or greater. If this option has a value of FFFFFFFF hex, the IP Address lease is assumed to be infinite as per RFC 2131, Section 3.3, so that renewal and rebinding procedures are not necessary even if Options 58 and 59 are received. Expired leases cause Avaya IP Telephones to reboot. Avaya recommends providing enough leases so an IP Address for an IP telephone does not change if it is briefly taken offline.

Does anyone have an idea?
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