Code Parameter
12 PHY2STAT
14 SIG
15 SIP_CONTROLLER_LIST
Extending use of DHCP lease
Avaya J100 Series IP Phones support configuration of network parameters to the phone using
DHCP as per RFC 2131. However, when a DHCP server becomes unreachable and the DHCP
lease currently held by the phone expires, the phones continues to use the same lease until the
DHCP server becomes reachable. This feature is controlled with the help of configuration
parameter, DHCPSTD, as explained:
Parameter name Default value Description
DHCPSTD 0 Specifies it will continue to use the expired DHCP
lease.
Value operation:
• 0: Continue use of expired DHCP lease if the
lease could not be renewed.
• 1: Stop using DHCP lease immediately when it
expires, as per standard.
The parameter is configured through
46xxsettings.txt file.
When this feature is enabled (DHCPSTD=1), the phone will continue to use the lease data,
including IP address, router and other options if the lease could not be renewed. In this state, the
phone will continue attempting to reach a DHCP server every 60 seconds. When a DHCP server
becomes reachable and a lease is renewed or new lease obtained, the phone performs a
duplicate address detection on the offered IP address. If no conflicts are detected, this IP address
is assigned to the local network interface for use.
Parameter configuration through DHCP
Parameter Set to
DHCP lease
time
Option 51, if received
DHCP lease
renew time
Option 58, if received
DHCP lease
rebind time
Option 59, if received
DOMAIN Option 15, if received
DNSSRVR Option 6, if received, which might be a list of IP addresses
Table continues…
Configuration through DHCP
July 2019 Installing and Administering Avaya J100 Series IP Phones 53
Comments on this document? infodev@avaya.com
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