24 Port SNMP Managed Switch – User Manual
Page
54
Product Number 0-1591058-x
© Tyco Electronics 2003
PL0351 Issue 1
IGMP Configuration
Multicasting is used to support real-time applications such as video conferencing or streaming
audio. IGMP (Internet Group Multicast Protocol) allows you to query for any attached hosts
who want to receive a specific multicast service. The switch looks up the IP Multicast Group
used for this service and adds any port, which received a similar request to that group. It then
propagates the service request on to any neighboring multicast switch to ensure that it will
continue to receive the multicast service.
Figure 62. The IGMP Configuration Menu
By supporting IGMP (Internet Group Management Protocol) Snooping, the switch can forward
multicast traffic intelligently. Packets are forwarded to the ports that belong to the multicast
group instead of being broadcast to all ports and possibly disrupting network performance.
This lookup table reflects the multicast group(s) configuration of your system and provides an
overview of the port(s) map to each multicast group. Up to 32 multicast groups are supported
by the switch.
User Authentication
You can change the password setting in the user authentication menu. You can also create
user and assign different privilege to suit your needs. After selecting an entry to add or
modify, type in the user name and password, toggle the user privilege and then update the
changes.
Figure 63. The User Authentication Menu
Ensure that the
root
Read/Write level password is kept secure and note the cautions detailed
on page 33.
