Alcatel-Lucent 7450 Basic System Configuration Manual page 301

Multicast
When configuring NTP the node can be configured to transmit or receive multicast packets
on the CPM MGMT port (CPM applies to the 7450 ESS and 7750 SR). Broadcast & Multicast
messages can easily be spoofed, therefore, authentication is strongly recommended.
Multicast is used to configure the transmission of NTP multicast messages. The no construct
of this command removes the transmission of multicast packets on the management port.
When transmitting multicast NTP messages the default address of 224.0.1.1 is used.
CLI Syntax:
Example:
The following example shows NTP enabled with the multicast command configured.
A:ALA-12>config>system>time# info
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A:ALA-12>config>system>time#
Multicastclient
The multicastclient command is used to configure an address to receive multicast NTP
messages on the CPM MGMT port (7450 ESS and 7750 SR). Broadcast & Multicast
messages can easily be spoofed, therefore, authentication is strongly recommended. The no
construct of this command removes the multicast client. If multicastclient is not configured,
all NTP multicast traffic will be ignored.
CLI Syntax:
Example:
The following example shows NTP enabled with the multicastclient command configured.
A:ALA-12>config>system>time# info
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Basic System Configuration Guide
config>system>time>ntp
multicast [version version] [key-id key-id]
config>system>time>ntp#
config>system>time>ntp# multicast
config>system>time>ntp# no shutdown
server 192.168.15.221
multicast
no shutdown
config>system>time>ntp
multicastclient [authenticate]
config>system>time>ntp#
config>system>time>ntp# multicastclient authenticate
config>system>time>ntp# no shutdown
server 192.168.15.221
System Management
301