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MSAP2000 AAMS User's Guide
Table 10
LABEL
New Time
(hh:min:ss)
Current Date
New Date (yyyy- Enter the new date in year, month and day format. The new date then appears
mm-dd)
Time Zone
Apply
Cancel
6.4 IGMP Snooping
IGMP (Internet Group Multicast Protocol) is a session-layer protocol used to
establish membership in a multicast group - it is not used to carry user data.
Refer to RFC 1112 and RFC 2236 for information on IGMP versions 1 and 2
respectively.
A switch can passively snoop on IGMP Query, Report and Leave (IGMP version 2)
packets transferred between IP multicast routers/switches and IP multicast hosts
to learn the IP multicast group membership. It checks IGMP packets passing
through it, picks out the group registration information, and configures
multicasting accordingly. IGMP snooping allows the switch to learn multicast
groups without you having to manually configure them.
The switch forwards multicast traffic destined for multicast groups (that it has
learned from IGMP snooping or that you have manually configured) to ports that
are members of that group. The switch discards multicast traffic destined for
multicast groups that it does not know. IGMP snooping generates no additional
network traffic, allowing you to significantly reduce multicast traffic passing
through your switch.
General Setup (continued)
DESCRIPTION
Enter the new time in hour, minute and second format. The new time then
appears in the Current Time field after you click Apply.
This field displays the date you open this menu.
in the Current Date field after you click Apply.
Select the time difference between UTC (Universal Time Coordinated, formerly
known as GMT, Greenwich Mean Time) and your time zone from the drop-
down list box.
Click Apply to save your changes to the MSAP2000 AAMS's volatile memory.
The MSAP2000 AAMS loses these changes if it is turned off or loses power, so
use the Config Save link on the navigation panel to save your changes to the
non-volatile memory when you are done configuring.
Click Cancel to start configuring the screen again.
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