User guide

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CONFIG Commands
rent dynamically-assigned IP address. This allows you to get to the IP address assigned to
your Gateway, even though your actual IP address may change as a result of a PPPoE con-
nection to the Internet.
set dynamic-dns option [ off | dyndns.org ]
set dynamic-dns ddns-host-name
myhostname .dyndns.org
set dynamic-dns ddns-user-name
myusername
set dynamic-dns ddns-user-password myuserpassword
Enables or disables dynamic DNS services. The default is off. If you specify dyndns.org,
you must supply your hostname, username for the service, and password.
Because different dynamic DNS vendors use different proprietary protocols, currently only
www.dyndns.org is supported.
IGMP Settings
NOTE: These commands are supported beginning with Firmware Version 7.5.1.
See “IGMP (Internet Group Management Protocol)” on page 102 for detailed explanation.
You can set the following options:
• IGMP Snooping – enables the Netopia Gateway to “listen in” to IGMP traffic. The Gate-
way discovers multicast group membership for the purpose of restricting multicast
transmissions to only those ports which have requested them. This helps to reduce
overall network traffic from streaming media and other bandwidth-intensive IP multicast
applications.
• Robustness – a way of indicating how sensitive to lost packets the network is. IGMP
can recover from robustness minus 1 lost IGMP packet. The default value is 2.
• Query Interval– the amount of time in seconds between IGMP General Query mes-
sages sent by the querier gateway. The default query interval is 125 seconds.
• Query Response Interval – the maximum amount of time in tenths of a second that
the IGMP router waits to receive a response to a General Query message. The default
query response interval is 10 seconds and must be less than the query interval.
• Unsolicited Report Interval – the amount of time in seconds between repetitions of a
particular computer’s initial report of membership in a group. The default unsolicited
report interval is 10 seconds.