Configuring Dhcp Option 242 - Avaya 9608 Administrator's Manual

Configuring DHCP Option 242

About this task
To administer DHCP option 242 for SSON, make a copy of the existing option 176 for your 46xx IP
deskphones. Option 242 is specific to the default site and applies to DHCPv4 only. You can then
perform one of the following actions:
Procedure
1. Ignore any parameters which the 9600 Series IP Deskphones do not support for setting
through DHCP in option 242, or
2. Delete unused or unsupported 9600 Series IP Deskphone parameters to shorten the length
of the DHCP message.
Result
You can set only the following parameters in the DHCP site-specific option for 9600 Series IP
Deskphones, although most of them can be set in a 46xxsettings.txt file as well.
Table 7: Parameters Set by DHCP in a Site-Specific Option
Parameter
DNSSRVR
DOMAIN
DOT1X
DOT1XSTAT
HTTPDIR
HTTPPORT
HTTPSRVR
ICMPDU
June 2014
Description
Specifies the DNS server IP address or addresses.
Specifies the string that is appended to DNS names in parameter values when they
are resolved into IP addresses.
Controls the operational mode for 802.1X. The default is 0, for pass-through of
multicast EAPOL messages to an attached PC, and enables Supplicant operation
for unicast EAPOL messages.
Controls 802.1X Supplicant operation.
Specifies the path name to prepend to all file names used in HTTP and HTTPS
GET operations during startup. (0 to 127 ASCII characters, no spaces.) The
command is SET HTTPDIR myhttpdir. The path relative to the root of the TLS or
HTTP file server where 9600 Series IP Deskphones files are stored. If an Avaya file
server is used to download configuration files over TLS, but a different server is
used to download software files through HTTP, set the path of the Avaya server in
the DHCP site-specific option, and set HTTPDIR again in the 46xxsettings.txt file
with the appropriate path for the second server. HTTPDIR is the path for all HTTP
operations except for BRURI.
Specifies the TCP port number to download the HTTP file.
Specifies the IP addresses or DNS names of HTTP file servers used to download
9600 Series IP Deskphones software files. The files are digitally signed, so TLS is
not required for security.
Controls the extent to which ICMP Destination Unreachable messages are sent in
response to messages sent to closed ports so as not to reveal information to
potential hackers. The default is 1 which sends Destination Unreachable messages
for closed ports used by traceroute.
Administering 9608/9608G/9611G/9621G/9641G IP Deskphones H.323
Comments? infodev@avaya.com
Administering the DHCP and file servers
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